sr20det won't run good i am stumpped - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ping · 06-03-2008, 02:16 PM

Ive been working on this for 4 years and i had to rebuild my motor i just put rings and bearings arp fastners and studs. any ways i have a power fc and i cant get the ignition timing right.

also my car went from having -15psi vacuum when i first started it.... a few days later its at 0psi idling.

i have a lap top interface and i up loaded enthalpy base tune, i have it set for 740cc injectors, z32 maf.

a ton of air comes out of the bov (synapse Synchronic) at idle i'm pretty sure its supposed to be vacuum. my bov is set up for recirculated but it seems like the turbo (gt3071r) moves alot of air at idle i also have hks stage 2 264 duration cams

auk113 · 06-19-2008, 08:28 AM

sounds like you have a vac leak. or your throttle is stuck cracked open

ArmadaJspec · 08-26-2008, 08:44 AM

Fist off you prob should get a certified APEX'i tuner to work on the Power FC they will dial it in exactly compared to downloaded maps (L or D jetro?)

Are you using a GT3071r bottom mount w/ T25/28 flange ??

n240sxfnatic · 08-26-2008, 09:59 AM

Yea sounds like you need a tune or the bov is the culprit. If you dont have money for a tune right now borrow a friends bov and see if it persists.

06-03-2008, 02:16 PM	#1
ping Join Date: Jun 2008 Location: maine Age: 35 Posts: 2 Trader Rating: (0) Feedback Score: 0 reviews	sr20det won't run good i am stumpped Ive been working on this for 4 years and i had to rebuild my motor i just put rings and bearings arp fastners and studs. any ways i have a power fc and i cant get the ignition timing right. also my car went from having -15psi vacuum when i first started it.... a few days later its at 0psi idling. i have a lap top interface and i up loaded enthalpy base tune, i have it set for 740cc injectors, z32 maf. a ton of air comes out of the bov (synapse Synchronic) at idle i'm pretty sure its supposed to be vacuum. my bov is set up for recirculated but it seems like the turbo (gt3071r) moves alot of air at idle i also have hks stage 2 264 duration cams Last edited by ping; 06-03-2008 at 02:27 PM.. Reason: i wanted to mention i had hks cams

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06-19-2008, 08:28 AM	#2
auk113 Leaky Injector Join Date: Sep 2005 Location: PA Posts: 124 Trader Rating: (4) Feedback Score: 4 reviews	sounds like you have a vac leak. or your throttle is stuck cracked open

08-26-2008, 08:44 AM	#3
ArmadaJspec Leaky Injector Join Date: Aug 2008 Location: ND Killdeer Posts: 101 Trader Rating: (5) Feedback Score: 5 reviews	Fist off you prob should get a certified APEX'i tuner to work on the Power FC they will dial it in exactly compared to downloaded maps (L or D jetro?) Are you using a GT3071r bottom mount w/ T25/28 flange ??

08-26-2008, 09:59 AM	#4
n240sxfnatic Zilvia Junkie Join Date: Apr 2007 Location: West Des Moines, Ia Age: 33 Posts: 493 Trader Rating: (6) Feedback Score: 6 reviews	Yea sounds like you need a tune or the bov is the culprit. If you dont have money for a tune right now borrow a friends bov and see if it persists.