log and tune from 2010 maro

[BoostedYards86]

This is my car and I finally had time to post up a log of its strange starting issues.

when it is under about 150* ect or under 60* Ambient it takes forever to start. Has a bad misfire till it warms up that wont go away unless i turn it off then turn it back on. then it will run completely normal. Car has a return style fuel system with the whipple injectors. Fuel regulator is boost/vacuum controlled. set at 60psi rail pressure at 0psi or atmospheric pressure.

Thoughts help greatly appreciated... the car will turn off too on cold days while driving. Talk about being frustrated

[gn2beatu]

Do you have a wideband? If so log with a better config, you dont even have O2's enabled. Here is a config with a ton of parameters, great for diagnosing issues. Save it to your system, and relog.

[decipha]

sounds like you need to dial your fuel in especially when cold

[BoostedYards86]

ya its all tuned with an aem wideband and rechecked on dynojet wideband. Once warm like i said it runs fine unless its really cold out. THen it will randomly die out. and yes i've been trying to get the fuel dialed in under cold start and cold run but clearly i'm missing something massive.

[DSteck]

Some specs of the engine would be nice. I fixed your injector data for you.

Here's a pot shot just guessing that you have a cam.

[BoostedYards86]

ya has a cam 229/236, PRC ls3 heads, whipple on 10psi with stock whipple injectors about 74lb/hr

[BoostedYards86]

steck ill try those out tomorrow. Suppose I should charge my battery then.