S13 SR20det weird problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Cordeez · 01-08-2007, 02:57 AM

Hey all, 1st time poster. anyway , on my SR, when i get out of VAC and into boost, the car seems like it is laborored and accelerates, but not as fast as it should be. (or so it seems) the revs do not seem to build as quickly when the car is under boost.

And when i begin to lift off the throttle, (throttle still depressed slightly, in VAC not boost) the revs begin to climb at a more accelerated rate then while in boost. My profec spec 2 says a good steady boost and my greddy gauge says a good steady boost too.

Mods.
Redtop SR
Badly slipping clutch (could this be the problem?)
T28
Boost controller (7psi)
exhaust from turbo back
HKS SSQV
walbro 255

coupelove626 · 01-08-2007, 03:19 AM

if your clutch is slipping, then the revs should go up very fast once u hit boost. But I think u should reword your problem just a bit.

ladiesman8527 · 01-08-2007, 07:31 AM

check for any boost or vacuum leaks. its hard to tell since we're not there.

Cordeez · 01-08-2007, 08:01 AM

OKay, Well the thing about the clutch is it slips very badly durring high RPM, but arround 2-3K when i begin to build boost the car almost seems labored.

I have boost leak tested my system from the hot pipe. and no leaks to 1.5Bar

broken240sx · 01-08-2007, 08:45 AM

did you pull codes from the ECU?

Cordeez · 01-08-2007, 08:48 AM

Also, i can rev it in neutral and if i rev it pretty high (i think over 5K) jabbing the throttle, it will get out of vacume and the boost gauge will meter very slight boost.

And no i have not pulled codes.

cotbu · 01-08-2007, 09:03 AM

Boost leak test from the intake pipe....Maybe your hot pipe is leaking!?

01-08-2007, 02:57 AM	#1
Cordeez Join Date: Apr 2006 Location: Maryland Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	S13 SR20det weird problem Hey all, 1st time poster. anyway , on my SR, when i get out of VAC and into boost, the car seems like it is laborored and accelerates, but not as fast as it should be. (or so it seems) the revs do not seem to build as quickly when the car is under boost. And when i begin to lift off the throttle, (throttle still depressed slightly, in VAC not boost) the revs begin to climb at a more accelerated rate then while in boost. My profec spec 2 says a good steady boost and my greddy gauge says a good steady boost too. Mods. Redtop SR Badly slipping clutch (could this be the problem?) T28 Boost controller (7psi) exhaust from turbo back HKS SSQV walbro 255

01-08-2007, 09:03 AM	#7
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	Boost leak test from the intake pipe....Maybe your hot pipe is leaking!? __________________ LoverTechnologies "Half Broken Things!"

01-08-2007, 03:19 AM	#2
coupelove626 BANNED Join Date: Oct 2006 Location: alhambra Age: 44 Posts: 472 Trader Rating: (0) Feedback Score: 0 reviews	if your clutch is slipping, then the revs should go up very fast once u hit boost. But I think u should reword your problem just a bit.

01-08-2007, 07:31 AM	#3
ladiesman8527 Zilvia Junkie Join Date: Dec 2005 Location: Collierville, TN Age: 38 Posts: 429 Trader Rating: (0) Feedback Score: 0 reviews	check for any boost or vacuum leaks. its hard to tell since we're not there.

01-08-2007, 08:01 AM	#4
Cordeez Join Date: Apr 2006 Location: Maryland Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	OKay, Well the thing about the clutch is it slips very badly durring high RPM, but arround 2-3K when i begin to build boost the car almost seems labored. I have boost leak tested my system from the hot pipe. and no leaks to 1.5Bar

01-08-2007, 08:45 AM	#5
broken240sx Leaky Injector Join Date: Jul 2005 Location: new york Posts: 111 Trader Rating: (0) Feedback Score: 0 reviews	did you pull codes from the ECU?

01-08-2007, 08:48 AM	#6
Cordeez Join Date: Apr 2006 Location: Maryland Posts: 28 Trader Rating: (0) Feedback Score: 0 reviews	Also, i can rev it in neutral and if i rev it pretty high (i think over 5K) jabbing the throttle, it will get out of vacume and the boost gauge will meter very slight boost. And no i have not pulled codes.