Quick newbie question, do I need to tune my car if I put in bigger cc fuel injectors? I'm running stock turbo with stock fuel injectors and I'm putting in DENSO 680cc fuel injectors, so do I have to re-tune my car?

ps: plz send pm if possible, i dont check forum that often! thanks

 

yes you'll need a tune for bigger injectors and why are you upgrading the injectors anyway?

 

Like mellon said. Yes. only pay for a tune if your getting more than just injectors installed!!!

 

My stock injectors are maxed out, over 90% duty cycle. I plan on getting around 780's (cuz I plan on going the red and meth route). I'm getting mine tuned after the injectors. Your car will run like crap without the tune.

 

Same question in two forums, same guy. Must have really wanted an answer or a broad range of opinions.

It has been answered now. Twice.

/brox