magnex, milltek, blue flame, or custom?

Adam K · 26-04-2008, 17:46

i want an exhaust for my vrs this month mainly because my original one has deteriorated and is on its last legs.

the milltek is the most expensive of the bunch, but it is really better than anything else?

also what is the advantage of going for a sports cat rather than a de-cat?

somebody please help me make my mind up!

lewisgraham · 26-04-2008, 18:09

miltek ! they are a subtle but effective exhaust,

sports cat.....not a decat as they dont have backpresure and can **** up your turbo

Adam K · 26-04-2008, 18:21

Quote:

Originally Posted by lewisgraham

miltek ! they are a subtle but effective exhaust,

sports cat.....not a decat as they dont have backpresure and can **** up your turbo

but will it fook up a turbo, or is it just one of these things people love to tell you? has anyone replaced their exhaust with a decat and broken their turbo?

ultra_joel88 · 26-04-2008, 18:53

I like the look of the blueflame myself, milltek probably better quality but not a fan of the twin exit.

jasc1988 · 26-04-2008, 20:31

I like the look of the blueflame too..

Diesels DONT need backpressure, thats petrols

I decatted my 306 hdi and the performance gain was very noticible. I had it for 40k and no turbo problems but that is a different car.

I honestly dont know if it will effect turbo or not but is a hell of a lot cheaper than a sports cat and offers more gains

skudmissile · 26-04-2008, 20:46

I de-catted mine, then a week later the turbo went pop..... draw your own conclusions

I have my car de-catted now, but hopefully my turbo is indestructable

jasc1988 · 26-04-2008, 20:47

Quote:

Originally Posted by skudmissile

I de-catted mine, then a week later the turbo went pop..... draw your own conclusions

I have my car de-catted now, but hopefully my turbo is indestructable

it better be

Adam K · 26-04-2008, 22:15

i am tempted by the blueflame, they sell them on ebay direct from the factory. will give the seller an email and get a price from them with backbox and decat.

the thing is, i do like the more subtle look of the milltek, whereas the magnex and blueflame look a little large.

jasc1988 · 26-04-2008, 22:26

Quote:

Originally Posted by Adam K

i am tempted by the blueflame, they sell them on ebay direct from the factory. will give the seller an email and get a price from them with backbox and decat.

the thing is, i do like the more subtle look of the milltek, whereas the magnex and blueflame look a little large.

i think its the other way, blueflame fits the cutout nicely and almost looks OEM while i feel the miltek looks out of place

djswivel · 26-04-2008, 23:26

On my second de-catted deisel. My golf did 30,000 with it no probs, so far the fabia has done 3500 no probs.
I got a custom system made up to look almost identical to the factory system.

novaneil · 27-04-2008, 10:30

Why do people think De-CAT's damage Turbo's??? I've had plenty on Petrol Turbo cars with them and never had a problem.... sounds like a myth to me. Just like how people think Induction kits damage MAF's

Sports CAT's on a diesel's are a waste of money because NO CAT is required for the MOT.

oilburninnut · 27-04-2008, 10:39

Quote:

Originally Posted by novaneil

Why do people think De-CAT's damage Turbo's??? I've had plenty on Petrol Turbo cars with them and never had a problem.... sounds like a myth to me. Just like how people think Induction kits damage MAF's

Sports CAT's on a diesel's are a waste of money because NO CAT is required for the MOT.

iduction kits don't damage mafs,gimps overoiling induction kits damage mafs

,standad turbo's on re mapped cars seem to break when a bigger downpipe and de cat are carried out,this isn't proof or anything but maybe thre is a link between the two,so i'm waiting till my hybrid goes on to do these,a very well respected and knowledgable member on here has a theory that the standard turbo with less backpressure allready running at close to max with a re map maybe is allowed to spin too fast by the reduction and so destroys itself,as i said not proof just a theory

Mossman · 27-04-2008, 10:44

Agreed - this is the advice I have been given too - wait for a bigger / stronger turbo prior to exhaust.

What I am really struggling with at the moment is that everything looks like it needs doing at the same time!

1. bigger turbo
2. exhaust
3. fmic
4. clutch
5. mapped

= big ££££s!!!!

I feel the clutch might be next on its own....

novaneil · 27-04-2008, 10:45

Quote:

Originally Posted by oilburninnut

iduction kits don't damage mafs,gimps overoiling induction kits damage mafs

,standad turbo's on re mapped cars seem to break when a bigger downpipe and de cat are carried out,this isn't proof or anything but maybe thre is a link between the two,so i'm waiting till my hybrid goes on to do these,a very well respected and knowledgable member on here has a theory that the standard turbo with less backpressure allready running at close to max with a re map maybe is allowed to spin too fast by the reduction and so destroys itself,as i said not proof just a theory

Oh I see, but surely thats what the wastegates for... To stop the Turbo from overspinning giving too much boost??? Maybe it just spikes too fast when spooling up or something. Either way its a good excuse for a hybrid if it happens

oilburninnut · 27-04-2008, 10:51

Quote:

Originally Posted by novaneil

Oh I see, but surely thats what the wastegates for... To stop the Turbo from overspinning giving too much boost??? Maybe it just spikes too fast when spooling up or something. Either way its a good excuse for a hybrid if it happens

agreed

i think this is what this other person was getting at who knows

oilburninnut · 27-04-2008, 10:52

Quote:

Originally Posted by Mossman

Agreed - this is the advice I have been given too - wait for a bigger / stronger turbo prior to exhaust.

What I am really struggling with at the moment is that everything looks like it needs doing at the same time!

1. bigger turbo
2. exhaust
3. fmic
4. clutch
5. mapped

= big ££££s!!!!

I feel the clutch might be next on its own....

no if you do the clutch next get the diff done at the same time,no sense in droppingthe gearbox twice eh jon?

skudmissile · 27-04-2008, 11:34

Somebody call

Gary is right, Only a fool would fit a clutch then only to drop the box off again to fit a stronger clutch and a diff

This came from a person on here who is very and i mean very respected in the world of tuning diesels.

He went abroad to see the effect on de-cats on the VNT turbos..... I think they drilled holes in the turbo casing in order to measure the rpm of the turbo..

Their conclusion was that with less back pressure the turbo is allowed to over spin. This creates very large lateral forces on the turbine blades causing them to break up. Even if the blades dont break up the bearing will not be able to cope with the extra RPMs and will probably seize.

I can also go from personal experiance on this, I decatted my fabia, a week later the shaft in the turbo seized and snapped in two

On a standard map the turbo will be well within its working RPMS and boost pressures so in theroy a de-cat will be fine. But on a mapped car the turbo will already be working very close to its design limits if not past its design limits.......In simple terms you wouldnt catch me ever de-catting a re-mapped car with a vnt turbo.

Like neil said its not a problem on petrol turbos as the turbo is controlled by the opening of the wastegate........ on a vnt turbo there is no wastegate the turbo can spin to infinity if it wasnt to

Lofty86 · 27-04-2008, 15:54

Why dont you get a cat back system, then get a bigger turbo and cat replacement at a later date?

Ive heard the blueflame looses power, not quite sure where i read that tho.

wrusst · 27-04-2008, 16:35

i know magnex are quite cheap and make exhausts for astons but when i rang them the didnt have i dyno graph for there system

Richardsvrs · 27-04-2008, 21:28

i have a custome powerflow exhuast system which has been decated and im still running the standard turbo, it rounds lovely a nice deep rumble, i then took it to jabba for a custom remap and am running 180bhp and 330ft of torque, and i ave add no problems with my turbo, thought when i went for the remap he advised not to go for the generic remap incase the turbo back serged and went pop, so instead he took into consideration i had decated the system

novaneil · 28-04-2008, 15:28

Quote:

Originally Posted by skudmissile

Somebody call

Gary is right, Only a fool would fit a clutch then only to drop the box off again to fit a stronger clutch and a diff

This came from a person on here who is very and i mean very respected in the world of tuning diesels.

He went abroad to see the effect on de-cats on the VNT turbos..... I think they drilled holes in the turbo casing in order to measure the rpm of the turbo..

Their conclusion was that with less back pressure the turbo is allowed to over spin. This creates very large lateral forces on the turbine blades causing them to break up. Even if the blades dont break up the bearing will not be able to cope with the extra RPMs and will probably seize.

I can also go from personal experiance on this, I decatted my fabia, a week later the shaft in the turbo seized and snapped in two

On a standard map the turbo will be well within its working RPMS and boost pressures so in theroy a de-cat will be fine. But on a mapped car the turbo will already be working very close to its design limits if not past its design limits.......In simple terms you wouldnt catch me ever de-catting a re-mapped car with a vnt turbo.

Like neil said its not a problem on petrol turbos as the turbo is controlled by the opening of the wastegate........ on a vnt turbo there is no wastegate the turbo can spin to infinity if it wasnt to

Thanks for that! Very useful indeed

I had no idea the vnt turbo didn't have a wastegate.

Shifty · 28-04-2008, 15:32

PipeWerx - Performance Exhaust Specialist

ns_sullivan · 08-05-2008, 07:06

Quote:

Originally Posted by skudmissile

Somebody call

Gary is right, Only a fool would fit a clutch then only to drop the box off again to fit a stronger clutch and a diff

This came from a person on here who is very and i mean very respected in the world of tuning diesels.

He went abroad to see the effect on de-cats on the VNT turbos..... I think they drilled holes in the turbo casing in order to measure the rpm of the turbo..

Their conclusion was that with less back pressure the turbo is allowed to over spin. This creates very large lateral forces on the turbine blades causing them to break up. Even if the blades dont break up the bearing will not be able to cope with the extra RPMs and will probably seize.

I can also go from personal experiance on this, I decatted my fabia, a week later the shaft in the turbo seized and snapped in two

On a standard map the turbo will be well within its working RPMS and boost pressures so in theroy a de-cat will be fine. But on a mapped car the turbo will already be working very close to its design limits if not past its design limits.......In simple terms you wouldnt catch me ever de-catting a re-mapped car with a vnt turbo.

Like neil said its not a problem on petrol turbos as the turbo is controlled by the opening of the wastegate........ on a vnt turbo there is no wastegate the turbo can spin to infinity if it wasnt to

In quoting above then,
Would it not be beneficial to fit a forge dump valve then if you are intending to re-map and decat your fab?
I only ask as curious to answer if anyone has an answer. I am running a blueflame system. My reason for this was picked up the sports cat cheap (£142 with 2 weeks useage) and the rear exit looks as close as you can get to existing with out looking diferent.

26-04-2008, 17:46	#1
Adam K Briskodian Join Date: Jul 2006 Location: Watford Posts: 224 Thanks: 1 Thanked 7 Times in 7 Posts	magnex, milltek, blue flame, or custom? i want an exhaust for my vrs this month mainly because my original one has deteriorated and is on its last legs. the milltek is the most expensive of the bunch, but it is really better than anything else? also what is the advantage of going for a sports cat rather than a de-cat? somebody please help me make my mind up! __________________ Adam K Kenwood DNX-7200 Double Din Nav Unit, Green Panel Filter, PD160 Intake, Cupra Console Bushes, Performance Torque remap Last edited by Adam K; 26-04-2008 at 18:20.

26-04-2008, 18:09	#2
lewisgraham Briskodian Join Date: Nov 2006 Location: Carlisle/dumfries Posts: 552 Thanks: 14 Thanked 15 Times in 15 Posts	Re: magnex, milltek, blue flame, or custom? miltek ! they are a subtle but effective exhaust, sports cat.....not a decat as they dont have backpresure and can **** up your turbo __________________ Skoda Fabia VRS in yellow, Stage two hybrid turbo/FMIC/miltek turbo back exhaust/sachs uprated clutch/brembo 4 pots/CDA air intake/KW coilover suspension/Audi S3 wheels

26-04-2008, 18:53	#4
ultra_joel88 Briskodian Join Date: Jun 2007 Location: Brecon/ Cardiff Posts: 2,501 Thanks: 26 Thanked 109 Times in 104 Posts	Re: magnex, milltek, blue flame, or custom? I like the look of the blueflame myself, milltek probably better quality but not a fan of the twin exit. __________________ '04 Fabia VRS - 312mm Brakes, Whiteline RARB, SEAT Sport Strut Brace, Pipercross Panel Filter & PD160 Intake, Pioneer and Infinity ICE, Custom exhaust system w/ de-cat, CCV Bypass w/ Catch Can, Boost + Volt Gauge, Window Tints

26-04-2008, 20:31	#5
jasc1988 Briskodian Join Date: Oct 2007 Posts: 2,897 Thanks: 94 Thanked 122 Times in 117 Posts	Re: magnex, milltek, blue flame, or custom? I like the look of the blueflame too.. Diesels DONT need backpressure, thats petrols I decatted my 306 hdi and the performance gain was very noticible. I had it for 40k and no turbo problems but that is a different car. I honestly dont know if it will effect turbo or not but is a hell of a lot cheaper than a sports cat and offers more gains __________________

26-04-2008, 20:46	#6
skudmissile Moving Stables Join Date: Dec 2006 Posts: 3,201 Thanks: 426 Thanked 183 Times in 165 Posts	Re: magnex, milltek, blue flame, or custom? I de-catted mine, then a week later the turbo went pop..... draw your own conclusions I have my car de-catted now, but hopefully my turbo is indestructable __________________ Bored of the volvo already

26-04-2008, 22:15	#8
Adam K Briskodian Join Date: Jul 2006 Location: Watford Posts: 224 Thanks: 1 Thanked 7 Times in 7 Posts	Re: magnex, milltek, blue flame, or custom? i am tempted by the blueflame, they sell them on ebay direct from the factory. will give the seller an email and get a price from them with backbox and decat. the thing is, i do like the more subtle look of the milltek, whereas the magnex and blueflame look a little large. __________________ Adam K Kenwood DNX-7200 Double Din Nav Unit, Green Panel Filter, PD160 Intake, Cupra Console Bushes, Performance Torque remap Last edited by Adam K; 26-04-2008 at 22:20.

26-04-2008, 23:26	#10
djswivel New job!! Join Date: Dec 2007 Location: Redruth, Cornwall Posts: 959 Thanks: 84 Thanked 50 Times in 49 Posts	Re: magnex, milltek, blue flame, or custom? On my second de-catted deisel. My golf did 30,000 with it no probs, so far the fabia has done 3500 no probs. I got a custom system made up to look almost identical to the factory system. __________________ http://www.myspace.com/lackofpower

27-04-2008, 10:30	#11
novaneil Briskodian Join Date: May 2007 Posts: 180 Thanks: 0 Thanked 6 Times in 4 Posts	Re: magnex, milltek, blue flame, or custom? Why do people think De-CAT's damage Turbo's??? I've had plenty on Petrol Turbo cars with them and never had a problem.... sounds like a myth to me. Just like how people think Induction kits damage MAF's Sports CAT's on a diesel's are a waste of money because NO CAT is required for the MOT.

27-04-2008, 10:44	#13
Mossman Briskodian Join Date: Jan 2004 Location: Hull Posts: 496 Thanks: 54 Thanked 27 Times in 26 Posts	Re: magnex, milltek, blue flame, or custom? Agreed - this is the advice I have been given too - wait for a bigger / stronger turbo prior to exhaust. What I am really struggling with at the moment is that everything looks like it needs doing at the same time! 1. bigger turbo 2. exhaust 3. fmic 4. clutch 5. mapped = big ££££s!!!! I feel the clutch might be next on its own.... __________________ Black Magic Fabia V/RS Xenons, Heated seats, Cruise, Cupra Front Splitter, new VRs badges, Koni FSDs, Eibachs, Jabba ARB, Jabba Remap, PD160 Intake and 312mm brakes + Detailed by Glyn O'Donnell Black Magic Fabia V/RS Xenons, Heated seats, Cruise, Ecutek Remap, PD160 Intake (Yes I have two! ) Photography Marketing T shirts flickr

27-04-2008, 11:34	#17
skudmissile Moving Stables Join Date: Dec 2006 Posts: 3,201 Thanks: 426 Thanked 183 Times in 165 Posts	Re: magnex, milltek, blue flame, or custom? Somebody call Gary is right, Only a fool would fit a clutch then only to drop the box off again to fit a stronger clutch and a diff This came from a person on here who is very and i mean very respected in the world of tuning diesels. He went abroad to see the effect on de-cats on the VNT turbos..... I think they drilled holes in the turbo casing in order to measure the rpm of the turbo.. Their conclusion was that with less back pressure the turbo is allowed to over spin. This creates very large lateral forces on the turbine blades causing them to break up. Even if the blades dont break up the bearing will not be able to cope with the extra RPMs and will probably seize. I can also go from personal experiance on this, I decatted my fabia, a week later the shaft in the turbo seized and snapped in two On a standard map the turbo will be well within its working RPMS and boost pressures so in theroy a de-cat will be fine. But on a mapped car the turbo will already be working very close to its design limits if not past its design limits.......In simple terms you wouldnt catch me ever de-catting a re-mapped car with a vnt turbo. Like neil said its not a problem on petrol turbos as the turbo is controlled by the opening of the wastegate........ on a vnt turbo there is no wastegate the turbo can spin to infinity if it wasnt to __________________ Bored of the volvo already

27-04-2008, 15:54	#18
Lofty86 Briskodian Join Date: Dec 2007 Location: Chippenham Posts: 526 Thanks: 22 Thanked 21 Times in 20 Posts	Re: magnex, milltek, blue flame, or custom? Why dont you get a cat back system, then get a bigger turbo and cat replacement at a later date? Ive heard the blueflame looses power, not quite sure where i read that tho. __________________ '53 Fabia vRS. Pro Race 2's, PD160 intake, Green Cotton Filter, Pikey Intercooler Mod x2, 312mm Brakes. Debaged Rear End. Fixed The Rear Door Leak! Ready to fit: 19Row Fuel Cooler, Braided Fuel Line. To Buy: FSD's, FMIC, LSD, Devils Own Water/Meth Injection, Clucth, SM Flywheel, Hybrid Turbo + Remap. ££££

27-04-2008, 16:35	#19
wrusst Briskodian Join Date: Oct 2007 Posts: 55 Thanks: 2 Thanked 2 Times in 2 Posts	Re: magnex, milltek, blue flame, or custom? i know magnex are quite cheap and make exhausts for astons but when i rang them the didnt have i dyno graph for there system

27-04-2008, 21:28	#20
Richardsvrs Briskodian Join Date: May 2007 Location: lincoln Posts: 96 Thanks: 0 Thanked 0 Times in 0 Posts	Re: magnex, milltek, blue flame, or custom? i have a custome powerflow exhuast system which has been decated and im still running the standard turbo, it rounds lovely a nice deep rumble, i then took it to jabba for a custom remap and am running 180bhp and 330ft of torque, and i ave add no problems with my turbo, thought when i went for the remap he advised not to go for the generic remap incase the turbo back serged and went pop, so instead he took into consideration i had decated the system

28-04-2008, 15:32	#22
Shifty www.oscarli.com Join Date: May 2005 Location: The home of witty banter™ Posts: 6,441 Images: 1 Thanks: 86 Thanked 155 Times in 92 Posts	Re: magnex, milltek, blue flame, or custom? PipeWerx - Performance Exhaust Specialist __________________ Official 0 to 60 mph - 5.85 seconds. Standing 1/4 mile - 14.3 seconds. 251.5 BHP and 400 lbs/ft of torque. Oh - and 55 mpg on a run My car is for SALE!! www.fyldeperformancecars.com

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magnex, milltek, blue flame, or custom?

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