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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 06-03-2008, 03:16 PM   #1
ping
 
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SR 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 03:27 PM.. Reason: i wanted to mention i had hks cams
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Old 06-19-2008, 09:28 AM   #2
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sounds like you have a vac leak. or your throttle is stuck cracked open
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Old 08-26-2008, 09:44 AM   #3
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RB

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 ??
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Old 08-26-2008, 10:59 AM   #4
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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.
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