maverick18

iTrader: (5)

I have the X1 in my car now (230/227 .591/.571 114 LSA) and my buddy is gonna do my heads so i will be tearing my engine apart. I have heard many good things about the FM 13 and wonder if it would be worth it to buy one and swap it out. How much more power would i be looking at getting with my mods (in sig) and ported stock ls1 heads? Thanks for the help.
Dane

SUTTERERMAN85

iTrader: (42)

i doubt you will be gaining that much at all. i wouldnt do it and spend the $400 bucks somewhere else unless you go BIGGER . but thats just me. maybe 5rwhp-10 max but i doubt it.

maverick18

iTrader: (5)

Yea,
thats $400 I could use tward a tune and all the BS you need to swap heads bolts,gaskets ect.

Ksett

It's not worth the cost.