[Ir0nM4n]

Originally Posted by vetehead

Congrats.. on your order of the 1le, My only knowledge of NPP is from my Corvette.On the Corvette it does add 6 hp to the ls3 430Vs436.....

I went with NPP on The Corvette because every ls3 manual car I was in with Borla, Corsa you name it before ordering the Corvette had mad drone in low rpm 5th & 6th gear.With NPP at hwy speeds no drone at all......If you want the real growl all the time around town add a mild to wild to NPP for less than 100 dollars and you can leave them open all the time and then close only at hwy cruising speeds to eliminate drone!

If it were me and not to late I would change the order to include NPP!

Hope this helps good luck with your 1le!

Agree 100%