Lower top speed after remap

Harry_vRS · 27-08-2006, 22:43

Quote:

Originally Posted by Irf

Instead of a FMIC, why not try the pikey mod where you put a vent behind the intercooler in arch? That's what Im going to do next.

If you do, i have a spare wheel arch liner with the mod installed on it if you want it

Dave_Fox · 27-08-2006, 22:52

I have a vent

Mil · 28-08-2006, 09:57

Usually top speed is sacrificed for more torque.

Dave_Fox · 28-08-2006, 11:17

Think I worded the title wrong

The cars still pulling upto 125mph, its only got a lower top speed because the turbo cuts out completely and I loose all power, until I stop and restart the engine.

Snoopie · 28-08-2006, 12:45

Yep, I gotch'ya. Becareful where you pull those speed's, and an FMIC is the trick for you!

Dave_Fox · 28-08-2006, 13:28

Quote:

Originally Posted by Snoopie

Yep, I gotch'ya. Becareful where you pull those speed's, and an FMIC is the trick for you!

I know you have!

Thats the thing, im not gonna do those speeds often at all, so is it worth bothering about

Could just say I got a free speed limiter with a Revo remap

lol.

Ive told you...FMIC??? -

ric04vrs · 28-08-2006, 18:41

does the turbo cut out if you drive it at high speed in 5th gear instead of 6th gear ? a work collegue had his PD130 VW Bora remapped and that pulls like a train upto and beyond the 135mph i've seen whilst in the car (on a private road of course) he says its been to 142mph without any turbo cutoff or any other problems even on a warm day, the only mod he has is a green filter , no arch liner venting for the SMIC , so i would say that there maybe a problem with with your car/engine/remap IMHO

Dave_Fox · 28-08-2006, 23:24

Haven't tried it in 5th yet. Id guess it would because ive had it all the way round to the red line in 4th and the turbo cuts out.

Snoopie · 29-08-2006, 00:48

There's no problem at all. A FMIC, just reduces the temperatures to constantly make it cooler for you're turbo. It's good for top speed too, as you use you're turbo constantly. If it never happens anywhere else, I'd leave it, but... Have a test on a private road... Have the car at 30mph in 6th gear. (This is bad for you're car, but good for testing out you're remap) and accelerate up to 70 + ... If it doesn't cut out, you have a decent remap.
The only reason why i say that, is because... You could well be passing a lorry for instance, and the turbo cut out on you... And you're buggered.

Dave_Fox · 29-08-2006, 10:59

Dont think my clutch/flywheel would be up for that test

Tom_vRS · 29-08-2006, 11:04

Dave, I think your problem is because of your free flowing exhaust... If you dont want an FMIC, then I reckon its worth putting the CAT back on.

Dave_Fox · 29-08-2006, 11:18

It has a CAT on but not the standard one...

Plus I dont have the standard CAT anymore.

Shifty · 29-08-2006, 11:34

Dave, mine has a full decat, and a more aggressive map, and no intercooler. Go back to the guy who mapped it, and describe your problems to him. I'm fairly sure its not your map. Im also fairly sure it isnt heat soak, unless it was hot when you tried the power run. You didnt seem to be doing to badly last night

Ive never had my turbo cut out, apart from the time it blew a hole in the side of it

faboka vrs · 29-08-2006, 12:39

Quote:

Originally Posted by Shifty

Ive never had my turbo cut out, apart from the time it blew a hole in the side of it

Cant see how a fmic would solve this problem. I can get some very high intake temps just like any other furby. Turbo boosts drops below 1bar but the turbo never cuts out and goes into limp mode. A fmic would just stop the drop of in boost. Can only assume the turbo is either boostsing to much or too little. Dave have you access to vag-com? Try logging the boost and see what its doing when it goes into limp mode.

Is your MAP sensor playing up?

Dave_Fox · 29-08-2006, 13:51

lol!

John, I dont have access to vag com unfortunately and ive no idea about the map sensor! Think the best bet is to give ADS a ring...they might have vag com actually

Wont be anything to do with the fact that its a new-ish turbo will it?

Snoopie · 30-08-2006, 13:26

Quote:

Originally Posted by faboka vrs

Cant see how a fmic would solve this problem.

My turbo cut out, and the FMIC solved the problem

WW_VRS · 30-08-2006, 18:44

FMIC does two things - it cools the air down a bit more - which is good as it increases the density again - AND it increases the volume that needs to be brought up to pressure. This is kinda not good as it takes a little longer to get the boost up. However as a side-effect it means the boost spike will be a little less, that in turn may prevent the limp mode.

On my car the boost spikes at 26 psi, this is a phase 1 custom-code map with propane injection set to a low (probably too low currently) level. I do have a hybrid turbo as well though.

faboka vrs · 31-08-2006, 20:46

Quote:

Originally Posted by WW_VRS

FMIC does two things - it cools the air down a bit more - which is good as it increases the density again - AND it increases the volume that needs to be brought up to pressure. This is kinda not good as it takes a little longer to get the boost up. However as a side-effect it means the boost spike will be a little less, that in turn may prevent the limp mode.

On my car the boost spikes at 26 psi, this is a phase 1 custom-code map with propane injection set to a low (probably too low currently) level. I do have a hybrid turbo as well though.

Thats how I understud it.

What I can understand is why his car is going into limp mode. I understand it as you get a boost spike at the start of WOT. So if hes accelerating through the rev (should no longer be spiking) why does his car go into limp mode

Surly their must be a problem with the car if his turbo is over or under boosting? Thats if is his turbo causing the problem.

Snoopie · 31-08-2006, 23:14

The turbo isn't the problem, It's your right foot!

Dave_Fox · 01-09-2006, 18:24

Ive been getting 55mpg recently so ive had no problems with the overboost. Just gonna leave it I think...bit ****ed off but

Cheers everyone

27-08-2006, 22:52	#22
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap I have a vent

28-08-2006, 09:57	#23
Mil Briskodian Join Date: Jan 2005 Location: United Arab Emirates Posts: 3,801 Thanks: 0 Thanked 5 Times in 5 Posts	Re: Lower top speed after remap Usually top speed is sacrificed for more torque. __________________ Milton Kyvernitis Private Government

28-08-2006, 11:17	#24
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap Think I worded the title wrong The cars still pulling upto 125mph, its only got a lower top speed because the turbo cuts out completely and I loose all power, until I stop and restart the engine.

28-08-2006, 12:45	#25
Snoopie Permanently banned Join Date: Mar 2006 Location: Buckingham Palace Car Park Posts: 4,460 Thanks: 86 Thanked 85 Times in 52 Posts	Re: Lower top speed after remap Yep, I gotch'ya. Becareful where you pull those speed's, and an FMIC is the trick for you!

28-08-2006, 18:41	#27
ric04vrs I parked up 1st Join Date: Jan 2006 Location: not near enough to the Ring Posts: 6,103 Thanks: 29 Thanked 177 Times in 172 Posts	Re: Lower top speed after remap does the turbo cut out if you drive it at high speed in 5th gear instead of 6th gear ? a work collegue had his PD130 VW Bora remapped and that pulls like a train upto and beyond the 135mph i've seen whilst in the car (on a private road of course) he says its been to 142mph without any turbo cutoff or any other problems even on a warm day, the only mod he has is a green filter , no arch liner venting for the SMIC , so i would say that there maybe a problem with with your car/engine/remap IMHO __________________ not so bored now

28-08-2006, 23:24	#28
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap Haven't tried it in 5th yet. Id guess it would because ive had it all the way round to the red line in 4th and the turbo cuts out.

29-08-2006, 00:48	#29
Snoopie Permanently banned Join Date: Mar 2006 Location: Buckingham Palace Car Park Posts: 4,460 Thanks: 86 Thanked 85 Times in 52 Posts	Re: Lower top speed after remap There's no problem at all. A FMIC, just reduces the temperatures to constantly make it cooler for you're turbo. It's good for top speed too, as you use you're turbo constantly. If it never happens anywhere else, I'd leave it, but... Have a test on a private road... Have the car at 30mph in 6th gear. (This is bad for you're car, but good for testing out you're remap) and accelerate up to 70 + ... If it doesn't cut out, you have a decent remap. The only reason why i say that, is because... You could well be passing a lorry for instance, and the turbo cut out on you... And you're buggered.

29-08-2006, 10:59	#30
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap Dont think my clutch/flywheel would be up for that test

29-08-2006, 11:04	#31
Tom_vRS Briskodaholic Join Date: Dec 2004 Location: Fenland, Cambridgeshire Posts: 11,055 Thanks: 623 Thanked 376 Times in 257 Posts	Re: Lower top speed after remap Dave, I think your problem is because of your free flowing exhaust... If you dont want an FMIC, then I reckon its worth putting the CAT back on. __________________ 97/R BMW 328i in Boston Green. Don't miss the new DR COLORCHIPS GROUP BUY!

29-08-2006, 11:18	#32
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap It has a CAT on but not the standard one... Plus I dont have the standard CAT anymore.

29-08-2006, 11:34	#33
Shifty Cereal Killer Join Date: May 2005 Location: The home of witty banter™ Posts: 6,227 Thanks: 71 Thanked 145 Times in 83 Posts	Re: Lower top speed after remap Dave, mine has a full decat, and a more aggressive map, and no intercooler. Go back to the guy who mapped it, and describe your problems to him. I'm fairly sure its not your map. Im also fairly sure it isnt heat soak, unless it was hot when you tried the power run. You didnt seem to be doing to badly last night Ive never had my turbo cut out, apart from the time it blew a hole in the side of it __________________ 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 Everyone knows someone called Dave. And here I am

29-08-2006, 13:51	#35
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap lol! John, I dont have access to vag com unfortunately and ive no idea about the map sensor! Think the best bet is to give ADS a ring...they might have vag com actually Wont be anything to do with the fact that its a new-ish turbo will it?

30-08-2006, 18:44	#37
WW_VRS Escorted Estate Join Date: Nov 2004 Location: Oxfordshire/Berkshire Posts: 9,737 Thanks: 44 Thanked 70 Times in 61 Posts	Re: Lower top speed after remap FMIC does two things - it cools the air down a bit more - which is good as it increases the density again - AND it increases the volume that needs to be brought up to pressure. This is kinda not good as it takes a little longer to get the boost up. However as a side-effect it means the boost spike will be a little less, that in turn may prevent the limp mode. On my car the boost spikes at 26 psi, this is a phase 1 custom-code map with propane injection set to a low (probably too low currently) level. I do have a hybrid turbo as well though. __________________ WW --->> Project Journal (pic links in first post there) Lummox'/Ross thread on Unit18 Automotive progress on my car: here

31-08-2006, 23:14	#39
Snoopie Permanently banned Join Date: Mar 2006 Location: Buckingham Palace Car Park Posts: 4,460 Thanks: 86 Thanked 85 Times in 52 Posts	Re: Lower top speed after remap The turbo isn't the problem, It's your right foot!

01-09-2006, 18:24	#40
Dave_Fox Briskodian Join Date: Jan 2005 Posts: 1,028 Thanks: 1 Thanked 3 Times in 3 Posts	Re: Lower top speed after remap Ive been getting 55mpg recently so ive had no problems with the overboost. Just gonna leave it I think...bit ****ed off but Cheers everyone

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