Grrrrrr

Getting ready to install fast 102mm intake fast throttle body fast fuel rails and crossover line. keeping the stock injectors. Will i need tuning after this install?

69LT1Bird

iTrader: (1)

Yes
You are changing the airflow into the engine so a tune is needed. If not, it wasn't worth the money or time to put it on.

Sales4@Texas-Speed

iTrader: (4)

I agree with 69LT1Bird, this manifold really needs a tune to operate correctly.

SweetS10V8

iTrader: (4)

The FAST can be put on and run without tuning, and you will gain power. My old FAST gained 21rwhp with no changes to the tune. It also ran and drove the same.....

Now, I also agree with the guys above, its always better to retune anytime you change anything. It maximizes power and driveability, thats why its better to buy HPTuners and learn to do it yourself so its not so expencive!