Runing Rough Upon Startup, Kills Randomly...

[john]

Update:

I am not worried about the turbo timer problem but it has happened once again. I am now worried about more important problems.

1. When I step on the gas, it takes 2 seconds before the datalogger sees any o2 value other than .02.
2. Sometimes when I step on the gas, the CEL light comes on and it seems as if the car looses all power (electronics wise) for a second (radio, radar detector, etc turn off).
3. Now when I let off the gas at WOT it pops a CEL while backfiring and loosing power like above.
4. Sometimes going over big bumps pops the CEL and turns the car off for a second.

I have my battery relocated in the trunk and it grounded on the frame near the back pass wheel. Is there a better place to ground? I think it has something to do with the ground placement or something (loose wire). I tightened the ground wire so it was very snug on the frame. My guess is that the weight shifting to the rear could be moving a wire somehow as with going over a big bump.

Fuel mods are 780cc injectors (w/ ecu compensation), 255 at ~36 psi, AFPR, SAFC at 0. My fuel trims are low: 140, middle: 118, High: 130. Yeah, I will have to tune them back to 100%. I do not know anything that could cause the lag in my o2 sensor (Mitsu). It has ~500 miles, on it pump gas only