Diablo Tune doesn't work well with my Mods

[Hummer83]

2005 Hummer H2

MODS-
AirRaid Cold Air Intake
Throttle Body Spacer
4 1/2 single exhaust pipe after Y pipe
No mufflers, dump exhaust

Truck ran good before tune, throws a p0300 code after a few miles of driving with the Diablo tune. (Yes I am using Premium fuel)

After installing Diablo tunes truck runs rough and throws a Multiple Misfire code

I need a tune that will work with my Mods otherwise I can't do much with my Predator except go back to stock Please Help Thanks

[CANUCKPREDATOR]

First get rid of the throttle body spacer, they are nothing but trouble.

[06MonteSS]

have you done any data logging and gotten your fueling adjusted so that your average long term fuel trims are in line??

http://diablosport.com/index.php?name=P ... opic&t=917

[Hummer83]

Uploading the log data now to the DSLOGREDUX....i will let you know how it turns out, thanks!

[Hummer83]

still doing the same b.s. .....random misfires when watching the live log data....cylinder misfires up to 2 counts then clears back to 0...even with adjusting the injector slope....if you got a custom tune i will try it...otherwise i'm thinking that i might have to sell my programmer

[Hummer83]

i am getting most misfires while at idle....i don't have these issues on the stock tune

[mikel]

Never seen something like this, unless the O2s are going bad...

[Hummer83]

the voltage on the O2 sensors look good...no codes for O2 sensors thrown....vehicle is a 2005 with 50,000 miles....i don't think they are going bad

[06MonteSS]

check you plugs and wires...