So my goals with my car is to have a nice street daily driven IX, roughly 400awhp.

Im planning on ordering all my parts and this is what Im going to be running

Stock IX Block
3" TBE w/ Test Pipe
3.5" FMIC with Upper/Lower IC Piping
Apexi Intake
Walbro FP
Injectors
CBRD BBK XL Full
Ported Stock Exhaust Manifold
Aftermarket o2 housing
GSC S1 Cams

Now I dont plan on revving higher than 7500-7800 RPM, this is my DD so Im trying to run a conservative setup.

Now how much power increase would I be looking at with getting GSC S2 cams over the S1s? If I got S2s I would have to get valve springs so Im wondering if it would even be worth it if I dont plan on revving higher than 8k...

Thanks, any suggestions/comments are welcome

 

injectors

 

lol i didnt see them on your list

 

S2s will still give more power under the curve. On a stock turbo they seem to be about 25whp difference completely unhinged. For your 400whp goal you wouldnt need anything more than S1s. The trade off is S2s can make the same power with a little less boost so that trade off is usually nice.