i'm doing a heads and cam swap and i was wondering if i should go with the ls6 intake or the fast 90mm set up. also what power gain would i get over the ls6 with the 90? it's for a A4

 

What kinda heads and cam? Sure, it has its benefits, but do you really want to spend 1100.00 more and be 10rwhp ahead of the LS6? (that was just a guess, so don't take my word on that.)

 

friend of mine saw a 40rwhp gain on manifold and tb from fast he had it ported out and hes cam only(stock heads no porting or anything)

 

Everyone has "that" friend.

 

i don't know what cam or heads i'm going to do. but maybe the 5.3

 

most people pick up 15-20 rwhp with heads cam cars,if you remove the MAF sensor at the same time and get a sd tune you can pick up another 10-15.Thats what seperates the people who gain 20 with a fast to the people who gain 30-35.if you cant remove your mass air,then IMO its not worth it.

 

how much is it to get that sd tune and i was some packages online but it says that it doesn't include sensors. hpw much would those cost also?

 

i'll dig up the link hold up

 

http://www.mobmototb.com/forums/showthread.php?t=2881

im sorry it was 30rwhp gain over ls6.

 

you dont need any sensors for a speed density tune,and it shouldnt cost any more as your going to need to get it tuned anyway.