2006 grandprix gxp - modify diablo

[gxp1]

2006 pontiac grand prix GXP - want to modify my car with diablosport but dont know how to modify . i upgraded car with magnaflow catbacks , K&N cold air intake , and Denso sparks . And now the car sounds like !@*? , not picking up well ,and when steppnig on gas it revs then it jumps and kicks in . need to know how custom modify because i dont have adapter for pc to download

[06MonteSS]

you've got mechanical issues with the car, not tune issues... shouldn't have those issues at all with only those mods you have...


get rid of the denso spark plugs and use stock ac delco replacements...

check the K&N CAI and make sure all clamps are TIGHT and no air leaks anywhere...

check the exhaust, make sure everything is TIGHT and no leaks anywhere...

also check the O2 sensors, and make sure they're plugged in, and that the wiring/connector wires are still ok and not burned, pinched, broken, etc....