I had a good experience with my IX and some S1s. Search for my username!

I am going with a built head and decided to drop some S2s. I am on a fpgreen and will be dropping some meth sometime soon. With stock like turbo, loosing some RPMs down low wont make a difference in comparison with the gains up top where your turbo loose some steam. Just my 0.02!

 

Sounds like HKS or Cossies is the way to go.

 

have you even considered Cosworth M2's? And you dont have to upgrade the valvetrain UNLESS you go above 8000rpm. I add a peak increase on 15hp throughout BUT an 28hp increase at 6800rpm...

I did a whole write up, check it... https://www.evolutionm.net/forums/sh...=cosworth+cams

And this has some MIVEC maps if your intrested, same post but others added some GOOD info for MIVEC tuning... http://www.socalevo.net/index.php?op...&topic=58780.0


good luck on you choice...

 

What kind of bolt ons do you have?

 

well i have s1 cams on my babe and iam so happy i got'em instead of 272's ,the power band is just crazy it pulls and pulls like a train now