R32 GTS-T RB20 Boost issues - Page 2 - Drifting forum

superclarkey · 01-01-2008, 19:36

Has the exhaust note got louder ? blowing loads of black smoke?

I had a problem once were my actuator arm fell off and was not allowing it to boost at all ! but if you gunned it hard it started to come onto about .5 bar.

clarkey.

Bunny · 01-01-2008, 20:09

He has a stock ECU in it. I don't think the exhaust has got louder. The actuator arm is moving under boost.

Do you think it's the internal wastegate

superclarkey · 01-01-2008, 20:12

If the arm is moving, and the exhaust has not changed it sound, no, i can't be.

have you tested the actuator on a air line to see what pressure its opening at ?

Ecu or boost leak sounds like.

Bunny · 01-01-2008, 21:22

First thought was boost leak tbh. But couldn't find anything. Haven't tested the actuator as i'm not sure how to do it.

Do you think the ECU is in limp mode. If so any ideas on how to reset it.

Failing that - Ed sounds like you need to get your boost pipes checked on a tester. Could be a pin hole somewhere.

superclarkey · 01-01-2008, 22:10

if the ecu was in limp mode, it would rev over 4k, just test you ecu out of your car in his.

could be an AFM problem, does he have a HKS filter by any chance ?

And boost leaks can really be anywere and hide really well !

EDnovaStarlet · 04-01-2008, 12:59

Quote:

Originally Posted by superclarkey

Change the ECU for a stock one, the R32 ecus are very unstable and can cause issues when chipped, that would be the first thing i changed mate.

Clarkey.

as far as I know my ECU is standard, but will see if can get another to swap em over with off ebay or wot ever.

My skyline is slower after 70 than my Omega

which goes alway to 153mph on long enough stright stretch of PRIVATE motorway

Bunny · 04-01-2008, 13:05

Dude you mean. PRIVATE ROAD.

EDnovaStarlet · 05-01-2008, 14:02

Quote:

Originally Posted by superclarkey

if the ecu was in limp mode, it would rev over 4k, just test you ecu out of your car in his.

could be an AFM problem, does he have a HKS filter by any chance ?

And boost leaks can really be anywere and hide really well !

Changed the AFM few weeks ago with Bunny's (whole filter set up

) made no diffrence at all

. Running a biltz filter.

How do I test ecu out of my car

?

Bunnys is a reprogramable ECU will it lose it's setting's if taken out and put on mine? Or is the software writen in so if battery disconected wont harm programming?

Running at a lose end with this car, thinking of selling it to some1 who knows wot there doing!

Cypher · 16-06-2008, 22:33

Quote:

Running at a lose end with this car, thinking of selling it to some1 who knows wot there doing!

thats a compliment..the wiring loom to the ecu has been butchered by the previous owner (looks like an aftermarket ecu)..

so just gotta put a neat engine to ecu loop and all should be fine

also had to tighten up a few boost leaks

Cypher · 22-06-2008, 21:41

or not....
did the same a he said...hitting 5k and misfires galore....im out of ideas...other than changing the ignitian amp pack....
tried everyhting in the thread..even put a new different ecu on to check that...

Bunny · 22-06-2008, 21:50

Wasted Spark Kit Should solve it.

Cypher · 22-06-2008, 21:57

aye..thats my next port of call...but the coil packs are fine!

EDnovaStarlet · 22-06-2008, 22:10

the ignition amp is what CHUNK said when we picked up some parts a while back! I cleaned up the earths on it to no avail!

If that does sort it go done the wasted spark kit!

Anyone else ever had this problem???????

Bunny · 22-06-2008, 22:42

Have you had it on the rollers yet. Might be worth taking it to a mapper and see what they say.

EDnovaStarlet · 22-06-2008, 22:47

Is it still boosting then just popping really loud? flames etc....at night kool but slow!

Cypher · 22-06-2008, 22:48

all the ones near me are busy....need it done in 2 weeks now

EDnovaStarlet · 22-06-2008, 22:55

try the amp bit then you've done the lot and can only be a map problem (surely) !

Nize · 23-06-2008, 21:32

Sounds like 1 of these IMO:

AFM buggered or the power supply to...
Timing way off
Low fuel pressure... either thru bad pump/blocked fuel filter or a vac hose leak or similar causing FPR to not function properly
Turbo's wastegate actuator vac pipe either split or not connected... would generate too much boost as a result
ECU power supply faulty, but this would result in 'Safe mode' cut off at 2K rpm's... so probably not that in this case
Faulty Lambda sensor or power failure to... runs in 'open loop' as a result and retards timing etc
Idle switch is sticking on... thinks it's always idling, and pulls timing etc
Weak spark maybe, or poor power supply to PTU... obvious bad spark and spluttering etc results

That's all the poss's I can come up with at this point... you need to start eliminating things and try to narrow it down mate, as there's too many things possibly causing it to just assume it's spark related IMO.

EDnovaStarlet · 25-06-2008, 13:58

humm that sounds like a good list for him to work through

Nize · 25-06-2008, 19:18

Not the smallest list of things to work thru mate, but some things only take a few minutes to check.

Im actually thinking now that a Vacuum hose leak is quite possible... and this would cause it to run lean, and could create the same problems as your having.

Also the lambda sensor can get 'tired' with age, and can cause poor fuelling... any electrical tests you wanted to try, just PM me and I can write you out instructions of what to test and where etc... you just need a multimeter for most.

Hope you find the problem mate.

Nize.

04-01-2008, 13:05	#27 (permalink)
Bunny Poor Join Date: Feb 2006 Location: In the sky Posts: 2,056	Dude you mean. PRIVATE ROAD. Last edited by Bunny : 04-01-2008 at 15:14.

22-06-2008, 22:10	#33 (permalink)
EDnovaStarlet RWD Carless Join Date: Nov 2005 Location: Milton Keynes Posts: 513	the ignition amp is what CHUNK said when we picked up some parts a while back! I cleaned up the earths on it to no avail! If that does sort it go done the wasted spark kit! Anyone else ever had this problem??????? Last edited by EDnovaStarlet : 22-06-2008 at 22:13.

23-06-2008, 21:32	#38 (permalink)
Nize gripper Join Date: Mar 2006 Posts: 15	Sounds like 1 of these IMO: AFM buggered or the power supply to... Timing way off Low fuel pressure... either thru bad pump/blocked fuel filter or a vac hose leak or similar causing FPR to not function properly Turbo's wastegate actuator vac pipe either split or not connected... would generate too much boost as a result ECU power supply faulty, but this would result in 'Safe mode' cut off at 2K rpm's... so probably not that in this case Faulty Lambda sensor or power failure to... runs in 'open loop' as a result and retards timing etc Idle switch is sticking on... thinks it's always idling, and pulls timing etc Weak spark maybe, or poor power supply to PTU... obvious bad spark and spluttering etc results That's all the poss's I can come up with at this point... you need to start eliminating things and try to narrow it down mate, as there's too many things possibly causing it to just assume it's spark related IMO. Last edited by Nize : 23-06-2008 at 22:04.

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01-01-2008, 19:36	#21 (permalink)
superclarkey ______________ Join Date: Aug 2004 Posts: 9,014	Has the exhaust note got louder ? blowing loads of black smoke? I had a problem once were my actuator arm fell off and was not allowing it to boost at all ! but if you gunned it hard it started to come onto about .5 bar. clarkey.

01-01-2008, 20:09	#22 (permalink)
Bunny Poor Join Date: Feb 2006 Location: In the sky Posts: 2,056	He has a stock ECU in it. I don't think the exhaust has got louder. The actuator arm is moving under boost. Do you think it's the internal wastegate

01-01-2008, 20:12	#23 (permalink)
superclarkey ______________ Join Date: Aug 2004 Posts: 9,014	If the arm is moving, and the exhaust has not changed it sound, no, i can't be. have you tested the actuator on a air line to see what pressure its opening at ? Ecu or boost leak sounds like.

01-01-2008, 21:22	#24 (permalink)
Bunny Poor Join Date: Feb 2006 Location: In the sky Posts: 2,056	First thought was boost leak tbh. But couldn't find anything. Haven't tested the actuator as i'm not sure how to do it. Do you think the ECU is in limp mode. If so any ideas on how to reset it. Failing that - Ed sounds like you need to get your boost pipes checked on a tester. Could be a pin hole somewhere.

01-01-2008, 22:10	#25 (permalink)
superclarkey ______________ Join Date: Aug 2004 Posts: 9,014	if the ecu was in limp mode, it would rev over 4k, just test you ecu out of your car in his. could be an AFM problem, does he have a HKS filter by any chance ? And boost leaks can really be anywere and hide really well !

22-06-2008, 21:41	#30 (permalink)
Cypher spl dori master Join Date: Nov 2006 Location: Grantham/Lincoln Posts: 270	or not.... did the same a he said...hitting 5k and misfires galore....im out of ideas...other than changing the ignitian amp pack.... tried everyhting in the thread..even put a new different ecu on to check that...

22-06-2008, 21:50	#31 (permalink)
Bunny Poor Join Date: Feb 2006 Location: In the sky Posts: 2,056	Wasted Spark Kit Should solve it.

22-06-2008, 21:57	#32 (permalink)
Cypher spl dori master Join Date: Nov 2006 Location: Grantham/Lincoln Posts: 270	aye..thats my next port of call...but the coil packs are fine!

22-06-2008, 22:42	#34 (permalink)
Bunny Poor Join Date: Feb 2006 Location: In the sky Posts: 2,056	Have you had it on the rollers yet. Might be worth taking it to a mapper and see what they say.

22-06-2008, 22:47	#35 (permalink)
EDnovaStarlet RWD Carless Join Date: Nov 2005 Location: Milton Keynes Posts: 513	Is it still boosting then just popping really loud? flames etc....at night kool but slow!

22-06-2008, 22:48	#36 (permalink)
Cypher spl dori master Join Date: Nov 2006 Location: Grantham/Lincoln Posts: 270	all the ones near me are busy....need it done in 2 weeks now

22-06-2008, 22:55	#37 (permalink)
EDnovaStarlet RWD Carless Join Date: Nov 2005 Location: Milton Keynes Posts: 513	try the amp bit then you've done the lot and can only be a map problem (surely) !

25-06-2008, 13:58	#39 (permalink)
EDnovaStarlet RWD Carless Join Date: Nov 2005 Location: Milton Keynes Posts: 513	humm that sounds like a good list for him to work through

25-06-2008, 19:18	#40 (permalink)
Nize gripper Join Date: Mar 2006 Posts: 15	Not the smallest list of things to work thru mate, but some things only take a few minutes to check. Im actually thinking now that a Vacuum hose leak is quite possible... and this would cause it to run lean, and could create the same problems as your having. Also the lambda sensor can get 'tired' with age, and can cause poor fuelling... any electrical tests you wanted to try, just PM me and I can write you out instructions of what to test and where etc... you just need a multimeter for most. Hope you find the problem mate. Nize.