I have a Buschur 3065 cast kit(ppi ported/coated) with all supporting mods making 404whp/350ft/lbs (Iveytuned) and was wondering how much more power the GSC s2's will make? ( I know the HKS's are very mild and old news.)
I am pretty confident it is a good investment, I just wanted the experts advice! Thanks in advance guys!!!

 

That makes two of us. Only difference is I have a 3076

 

subscribed

 

bump for info

 

Wow, nobody???

 

I have HKS 272's now and bought GSC S2's, from what Ive gathered, its going to be night and day compared to the HKS's. The S2's make better midrange than Kelfords and rival them in top end as well. Ill be able to tell you shortly how they perform as theyll be in my car soon.

edit - I noticed youre in an VIII and Im in an IX, so while there'd be differences due to MIVEC plus the fact that Im going to be using a Red, it could be pretty different but Ill still let you know.

 

I would say 15-20whp minimum...........

 

I just talked 2 alfred yesterday @ Tunning Technologies regarding my setup.

gt3076r
Tubular manifold
3" tbe with test pipe
hks 280's
780cc injectos
walbro 255
101 street blaze
Perrin Intake
Running on 25psi

Alfred sais I should hit n e wer from 420 to 450whp and close 2 500whp on C16.

 

I was debating myself on switching to a different cam setup. I have HKS 272's

 

I just decided to upgrade my HKS 272's to GSC S2's, I expect at least 25hp, with this cams and new valves springs.

 

Does anybody have any solid, tested information and results?

 

I will by the end of the week. Car is going to Iveytune. She made 404/350 with the HKS's so I'll keep you posted on the S2 numbers.

 

On a 50 trim I gained 20whp going from HKS 272 to HKS 280. I would expect perhaps another 10 whp from the GSC S2 cams, maybe more - the amount of gain will depend on how hard you're already pushing your turbo, and how well your intake and head flow. You'll probably lose some spoolup (100-200 rpm?).

I'm in the process of going from the HKS 280 cams to a set of Kelford 272s. It'll be interesting to see if any gains are to be had. I'm hoping that the higher lift will help.

l8r)

 

Interested myself.

 

i say 425/368 let me know how close i am