will i need to retune after installing these parts? my a/f at WOt is 11.2/1 and timing is very conservative. Motor has forged pistons and rods. thank you.

 

Are those forged pistons and rods worth taking the risk? Your a/f may on the rich side and the timing may be conservative, but when changing the intake manifold, the VE tables may be off enough to cause some issues. Retune.

 

will do thanks man

 

I agree anytime anything on your set up as major as that changes retune.