hard starting question???

[SVTshelby]

i have an '09 GT500 with the jlt+pulley+tune and its having a hard time starting. the car has done it since before the upgrades however. the car isnt throwing any fault codes and we really have no idea what could be causing it. It always does it whether hot or cold. anyone have ideas? once the car is started it runs fine, no issues at all, she put 543 to wheels on a loaded mustang dyno. any thoughts or even guesses at this point would be greatly appreciated.

 

[blacknlte]

What kind of tuner are you using (SCT)? Does it just crank and studder? Or at like its flooding? Smell gas? etc.... Might be able to data log and have your tuner take a look.

 

[me32]

Take mods off go back to stock an go to dealer. If you say it started before mods they may have to relish the pcm

 

[SVTshelby]

the car has done since it was stock, been to the dealership and of coourse they cant find anything wrong. any ideas? the car only has 17k miles. .We've been using the diablosport