What mods require a new tune?

[LaffnJack]

I think that I title says it all, but at what point do you need to have a tune done? Can you keep the factory tune with basic bolt ons (i.e. CIA, phlenum, etc.), or should you have a new tune for these? Also, is at what point do you need to tune of a pulley change? I am new to Lightnings and it is all fresh for me.

Thanks in advance,
-J-

 

[Scuba-Matt]

You will be fine with a CAI don't waste your money on a after market plenum until you make some big HP numbers. the stock one is fine.
Your going to need a tune if you install a pulley thats bigger than two more pounds. here is something for you to read: http://www.svtperformance.com/forums/showthread.php?t=226842

 

[04 Sonic Blue L]

ok what if im tuned because i have pulley intake exhuast and now i want to get the charger ported . . do i need to retune ? ?

 

[samiam513]

if it forces more air in or lets more out of the motor chances are you will need a new tune.

 

[LaffnJack]

Thanks. I appreciate the help and the link.

-J-

 

[Scuba-Matt]

ok what if im tuned because i have pulley intake exhuast and now i want to get the charger ported . . do i need to retune ? ?

If you get the SC ported you going to want to run a 6# lower & Mafia and will need a tune