coil pack q's????

[WICKEDGN]

ok so how often do you have to change a coil pack? also when i run full throttle with my thdp exhaust cut open my car pops and when i run it close it doesnt pop what could it be???

 

[TurboTR]

Probably leaning out some when the exh is open. What do the O2 volts say?

TurboTR

 

[WICKEDGN]

well i cant tell you because i dont have a scan master but hopefully i will get one soon so i may be leaningout huh??

 

[blackbuick87]

Yes, youre flowing more air vs. your maxed out injectors so its leaning out. Dont do it anymore until you get a scan tool. May want to try a little more FP in the meantime.