anytime i go over about 7-8 psi the car seems to studder and pop backfiring. I have a boost a pump but should have enough fuel. It starts leaning out as well but injectors don't max out so im thinking the fuel pump isnt running out of fuel. any ideas! Here is a log But i didnt really catch it happening much
check your plug gap.
murfie is correct. That is a symptom of spark blow out. Try .026 to .028 dependent on max boost.
2012 Mustang GT with S/C
4Runner with S/C
Turbo/NOS Hayabusa - 320RWHP
My boost is 14 psi. i can hold it part throttle around 10 psi no issues. i go higher it bangs and pops around and i dont see anything in the log.wot 2 Driver demand Limit.hpl
Which time frame shows the bangs and pops? Are you e85 or 93?
Your MAF is pegged. Might be able to rescale and get it to work better as i'm showing 10-15% in places on your MAF. Being at 80us usually means its time to put the MAF in a bigger pipe.
Last edited by murfie; 05-08-2018 at 11:54 PM.
I had a similar issue at 15+ PSI. Ended up being valve float. Upgraded valve springs and my customer's coyote now howls perfectly to 25 psi.
2009.5 PBM G8 GXP M6 W/Roof-Self tune, OBX LTs, Kooks axleback, LSA blower, cam,
Monster LT1-SC clutch, flex fuel, 12 psi [email protected] 1,800 D.A
2007 TBSS-Self tune, bolt ons [email protected], 1,900 D.A
1991 GMC Syclone- Self tune/catback 12.8@104, 4,200ft D.A
Regapped plug to .24 0 issues
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