I have a 99 Camaro z28. I changed the rear to 3:73, long tubes header and cold air intake but I am having problems programming with my Diablo sport because I don't know the best settings. Any suggestions. In addition, I have no cats.

 

Give me a call i Will walk you thru 918-284-8092

 

you have a newer version predator for that car, right - on a 9rxx revision?

if so, do some data logging to see where your average fuel trims (ltft's) are at... and adjust your fueling accordingly...

here's info: http://diablosport.com/index.php?nam...iewtopic&t=917

you also will likely need a custom tune done for it in order to have the necessary rear O2 trouble codes and related items disabled for the long tube headers and no cats... hit me up if interested... I also do full custom tunes to get you even better/more performance over and above the canned preset tunes...