Per JWT recommendation C1 is the way to go for a SR20DET if it's going to be a daily car.

I just sold my S4 and I'm going through the process of installing the C1 right now. :)

^You pick up some s/r's as well? Should have went C2's lol. That's the way to go on a turbo car 'per' people that have done it. S4's add about 30whp on a turbo setup. All things being the same except the cam change, I wonder how the C1's compare.

^You pick up some s/r's as well? Should have went C2's lol. That's the way to go on a turbo car 'per' people that have done it. S4's add about 30whp on a turbo setup. All things being the same except the cam change, I wonder how the C1's compare.

Hey bro, I thought the same about C2 but C1 ones are more easy on the street, besides at only 10 psi my potenza R11 do not hook when I'm @ wot and if raise it to 15 psi (GT2860RS my current turbo) I get traction only almost at the end of revs at 3rd gear.

200SX SE-R SR20DET C1 Cams + Springs by JWT Test Drive Oct 2011 - YouTube


Way better idle compared to the S4 and I feel they pull stronger on top however, I had to put JWT S&R.

On my personal opinion not experience (and JWT too) the C2 are not for a daily car.

For the experts, Should I keep the C1 or should I sell them and go with the C2 for my daily car?

How much HP gain would someone expect of this?

Thank you.

Go with C2's Wolfy...