N75J fitted

Angry Dog · 19-01-2008, 19:27

and the car is worse.

still hesitates under part acceleration and is now venting off boost under part load at 4500rpm, which is odd as its not at WOT.

martziniuk · 19-01-2008, 19:39

Its probally fitted the wrong way.
J vesion goes on with the connector facing the bulkhead.
The f and h version go on the normal way,the j goes on the other way.

Angry Dog · 19-01-2008, 20:15

my initial thoughts were that it did! ta mart, full power restored, but problem still there

Fezboy · 19-01-2008, 20:23

Mike is the car showing any error codes?

What do you mean venting off boost?

Mine sort of does this now and again around 3K foot half down and I get psst psst psst psst? It's more like pulsing?

I don't get any hesitation(Well none that I notice)

Angry Dog · 19-01-2008, 20:39

I havent got any codes that I can see.

the venting of boost was it dumping all the boost lol - its back to normal now though.

my hesitation / judder happens under acceleration on part load - in the transient stages. under WOT my car is great until 6k rpm in 3rd when it missfires but you can drive through it.

Quote:

Originally Posted by Fezboy

Mike is the car showing any error codes?

What do you mean venting off boost?

Mine sort of does this now and again around 3K foot half down and I get psst psst psst psst? It's more like pulsing?

I don't get any hesitation(Well none that I notice)

bengie · 19-01-2008, 20:46

a lot of cars do it mike, its a common thing that i don't think you'll fix.

i know mine did it on a jabba map.

ethos · 19-01-2008, 20:49

Mine sounds like it does the same sort of thing.

As for the J n75, from what i've read on these forums some cars love it and some don't get along with it... guessing it depends on what map etc.. etc... you have.

Angry Dog · 19-01-2008, 20:54

I dont recall anyone elses missfiring at 6k rpm in 3rd though?

ethos · 19-01-2008, 21:19

Quote:

Originally Posted by Angry Dog

I dont recall anyone elses missfiring at 6k rpm in 3rd though?

Nope, I haven't seen this....

Coilpacks?

cowper3010 · 19-01-2008, 21:36

im in a learning mood tonight lol what is n75j?

Fezboy · 19-01-2008, 21:41

Quote:

Originally Posted by ethos

Nope, I haven't seen this....

Coilpacks?

That should throw up a code though!

I was thinking the same

Coil pack/plugs/plug gap?

ethos · 19-01-2008, 22:04

Why did you go for the J over the "race H" btw?

VAG 1.8T - N75 H Control N75H Race Valve - Free P&P on eBay, also Engine Tuning Parts, Performance Tuning Parts, Car Tuning Styling, Cars, Parts Vehicles (end time 09-Feb-08 20:02:59 GMT)

bengie · 20-01-2008, 00:24

i was meaning the part throttle hesitation not the misfire

it might sound like a silly question but what exactly happens during the misfire? is it simply a slight misfire involving a little noise and judder or something other than that?

the more info you give us the more we can try and help you

martziniuk · 20-01-2008, 00:48

It should not misfire around 6k. This defo sounds like a plug/coil problem,has it happened since you regapped them?
You will just have to wait until your new plugs arrive.
Mike in answer to your previous pm. Your problem is different to mine as mine used to hesitate on full throttle only, it was great on part throttle.

Rob_OctaviavRS · 20-01-2008, 04:54

This N75H on ebay thats been mentioned, is it any good? thinking of giving it a go as its on my parts to change list, cheers.

Angry Dog · 20-01-2008, 11:15

I got the J as im just eliminating possible faults.

Steevie Wonder · 20-01-2008, 14:30

Why don't you just fit the proper one for the car......

N75 'F' VAG part no. 058-906-283-F

Sounds like your coil packs are shafted too.

Angry Dog · 20-01-2008, 21:24

Quote:

Originally Posted by Steevie Wonder

Why don't you just fit the proper one for the car......

N75 'F' VAG part no. 058-906-283-F

Sounds like your coil packs are shafted too.

If the coil packs were shafted, the car would miss under WOT when the car is under more load in all gears, rather than just at one rev point.

the missfire doesnt occur all the time either.

Johnny50 · 21-01-2008, 10:19

Quote:

Originally Posted by bengie

a lot of cars do it mike, its a common thing that i don't think you'll fix.

i know mine did it on a jabba map.

Mine is on a Jabba Custom map and does that too.

RichB86 · 21-01-2008, 10:28

Whereabouts is the N75 located? could someone post a picture of where it is please? because i alway thought it was the one on the top of the engine but thats another N something isnt it?

Beretta · 21-01-2008, 11:25

The N75 "IS" on top of the engine, just to the right of the dump valve.

RichB86 · 21-01-2008, 14:26

ahh well that helps! been putting it off as i couldnt find it as didnt think it was that one.

Thankyou

bengie · 21-01-2008, 19:37

your thinking of the N249 valve i believe

19-01-2008, 19:27	#1
Angry Dog Briskodian Join Date: Nov 2007 Location: East Yorkshire Posts: 1,050 Thanks: 76 Thanked 17 Times in 17 Posts	N75J fitted and the car is worse. still hesitates under part acceleration and is now venting off boost under part load at 4500rpm, which is odd as its not at WOT. __________________ Regards, Mike Proud owner of a Remapped Red Octavia vRS Never argue with an idiot - they will only beat you with experience.

19-01-2008, 19:39	#2
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,944 Thanks: 54 Thanked 160 Times in 155 Posts	Re: N75J fitted Its probally fitted the wrong way. J vesion goes on with the connector facing the bulkhead. The f and h version go on the normal way,the j goes on the other way. __________________ Regards Martin Turbo back blueflame exhaust ,Forge 007p Dump valve,Prosport boost gauge, Autobahn88 TIP, Ecu Evolution Remap, FMIC

19-01-2008, 20:15	#3
Angry Dog Briskodian Join Date: Nov 2007 Location: East Yorkshire Posts: 1,050 Thanks: 76 Thanked 17 Times in 17 Posts	Re: N75J fitted my initial thoughts were that it did! ta mart, full power restored, but problem still there __________________ Regards, Mike Proud owner of a Remapped Red Octavia vRS Never argue with an idiot - they will only beat you with experience.

19-01-2008, 20:23	#4
Fezboy Briskodian Join Date: Aug 2006 Location: Watford Posts: 2,452 Thanks: 21 Thanked 122 Times in 116 Posts	Re: N75J fitted Mike is the car showing any error codes? What do you mean venting off boost? Mine sort of does this now and again around 3K foot half down and I get psst psst psst psst? It's more like pulsing? I don't get any hesitation(Well none that I notice) __________________ Octavia VRs *SOLD* The futures somkey! The futures diesel

19-01-2008, 20:46	#6
bengie splash!!!! Join Date: Feb 2004 Location: planet earth Posts: 15,215 Thanks: 17 Thanked 144 Times in 125 Posts	Re: N75J fitted a lot of cars do it mike, its a common thing that i don't think you'll fix. i know mine did it on a jabba map. __________________ owner of a skoda octavia 4xvrs3

19-01-2008, 20:49	#7
ethos Briskodian Join Date: Jun 2007 Location: Cornwall Posts: 1,193 Thanks: 62 Thanked 37 Times in 33 Posts	Re: N75J fitted Mine sounds like it does the same sort of thing. As for the J n75, from what i've read on these forums some cars love it and some don't get along with it... guessing it depends on what map etc.. etc... you have.

19-01-2008, 20:54	#8
Angry Dog Briskodian Join Date: Nov 2007 Location: East Yorkshire Posts: 1,050 Thanks: 76 Thanked 17 Times in 17 Posts	Re: N75J fitted I dont recall anyone elses missfiring at 6k rpm in 3rd though? __________________ Regards, Mike Proud owner of a Remapped Red Octavia vRS Never argue with an idiot - they will only beat you with experience.

19-01-2008, 21:36	#10
cowper3010 Briskodian Join Date: Jan 2008 Location: guildford/wellingborough Posts: 188 Thanks: 0 Thanked 2 Times in 2 Posts	Re: N75J fitted im in a learning mood tonight lol what is n75j?

19-01-2008, 22:04	#12
ethos Briskodian Join Date: Jun 2007 Location: Cornwall Posts: 1,193 Thanks: 62 Thanked 37 Times in 33 Posts	Re: N75J fitted Why did you go for the J over the "race H" btw? VAG 1.8T - N75 H Control N75H Race Valve - Free P&P on eBay, also Engine Tuning Parts, Performance Tuning Parts, Car Tuning Styling, Cars, Parts Vehicles (end time 09-Feb-08 20:02:59 GMT)

20-01-2008, 00:24	#13
bengie splash!!!! Join Date: Feb 2004 Location: planet earth Posts: 15,215 Thanks: 17 Thanked 144 Times in 125 Posts	Re: N75J fitted i was meaning the part throttle hesitation not the misfire it might sound like a silly question but what exactly happens during the misfire? is it simply a slight misfire involving a little noise and judder or something other than that? the more info you give us the more we can try and help you __________________ owner of a skoda octavia 4xvrs3

20-01-2008, 00:48	#14
martziniuk Need more power Join Date: Feb 2007 Location: Driffield, Good old yorkshire Posts: 1,944 Thanks: 54 Thanked 160 Times in 155 Posts	Re: N75J fitted It should not misfire around 6k. This defo sounds like a plug/coil problem,has it happened since you regapped them? You will just have to wait until your new plugs arrive. Mike in answer to your previous pm. Your problem is different to mine as mine used to hesitate on full throttle only, it was great on part throttle. __________________ Regards Martin Turbo back blueflame exhaust ,Forge 007p Dump valve,Prosport boost gauge, Autobahn88 TIP, Ecu Evolution Remap, FMIC

20-01-2008, 04:54	#15
Rob_OctaviavRS Briskodian Join Date: Jun 2006 Location: Nottingham Posts: 87 Thanks: 0 Thanked 1 Time in 1 Post	Re: N75J fitted This N75H on ebay thats been mentioned, is it any good? thinking of giving it a go as its on my parts to change list, cheers. __________________ 2.3 Litres with 28PSi boost = Toodle Pip! Harmon Kardon AS3 Audio, Bi-Xenons, Heated Aero Leather, 280BHP + 400NM

20-01-2008, 11:15	#16
Angry Dog Briskodian Join Date: Nov 2007 Location: East Yorkshire Posts: 1,050 Thanks: 76 Thanked 17 Times in 17 Posts	Re: N75J fitted I got the J as im just eliminating possible faults. __________________ Regards, Mike Proud owner of a Remapped Red Octavia vRS Never argue with an idiot - they will only beat you with experience.

20-01-2008, 14:30	#17
Steevie Wonder Silver bullet Join Date: May 2003 Location: Planet Earth...... Posts: 785 Thanks: 48 Thanked 40 Times in 38 Posts	Re: N75J fitted Why don't you just fit the proper one for the car...... N75 'F' VAG part no. 058-906-283-F Sounds like your coil packs are shafted too. __________________ The silver bulletJabbasport's; IHI Stage 3 vf34, ceramic lined manifold, F.M.I.C, boost controller, Snowperformance methanol injection, ABD Racing ceramic inlet manifold & CAI, K&N monster filter, 02M 6 speed TDi gearbox, Peloquin a.t.b, Sachs SMF & sports clutch, Forge quickshift, APR R1, Blueflame 3" d/p, 100 cell cat, Milltek 2 ¾" system, Samco; i/c, turbo & boost hoses, Bosch 440cc injectors, 3" M.A.F, SuperPro bushes all round + engine mounts, Weitec coilovers, Eibach rear arb, AP Racing 6 pots & 335mm floaters, S3 top & bottom braces, Nomad; turbo, oil pressure, oil temperature & battery gauges.

21-01-2008, 10:28	#20
RichB86 Briskodian Join Date: Jul 2007 Location: Oxfordshire Posts: 876 Thanks: 37 Thanked 31 Times in 30 Posts	Re: N75J fitted Whereabouts is the N75 located? could someone post a picture of where it is please? because i alway thought it was the one on the top of the engine but thats another N something isnt it? __________________ Must Go Faster

21-01-2008, 11:25	#21
Beretta SMOGUS MAXIMUS Join Date: Jan 2005 Location: Essex Posts: 2,619 Thanks: 50 Thanked 75 Times in 72 Posts	Re: N75J fitted The N75 "IS" on top of the engine, just to the right of the dump valve. __________________ Skoda performance was "IMPOSSIBLE", now its Japanese and 177 bhp and 295 lb ft torque of SMOG. Gerry "HONI SOIT QUI MAL Y PENSE"

21-01-2008, 14:26	#22
RichB86 Briskodian Join Date: Jul 2007 Location: Oxfordshire Posts: 876 Thanks: 37 Thanked 31 Times in 30 Posts	Re: N75J fitted ahh well that helps! been putting it off as i couldnt find it as didnt think it was that one. Thankyou __________________ Must Go Faster

21-01-2008, 19:37	#23
bengie splash!!!! Join Date: Feb 2004 Location: planet earth Posts: 15,215 Thanks: 17 Thanked 144 Times in 125 Posts	Re: N75J fitted your thinking of the N249 valve i believe __________________ owner of a skoda octavia 4xvrs3

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