Ive searched and really cant find anything that relates to my situation. But im running a stock turbo, Aeromotive 340 fuelpump, 1200cc injectors ,E-85, and the car is tuned for 22psi and also has a dual map for 91. Other than that the car is stock. My question is to run my HKS 272's do i need more fuel ? If so what size injectors? Do i need another fuel pump I.E ( Double Pumper ) or can i run a inline pump? My HP goes is to break 400 on E-85.

Thanks guys !

 

What walbro pump do you have? 255, 400, 450?

-Ethan

 

sorry just checked my paperwork its not a Walbro its a aeromotive 340

 

That is plenty of fuel for stock turbo no matter what cams you'll use.

 

Right on thanks !!

 

hks 272s are not that great of cams. Rather spend couple hundred more and get a set of S2's.

 

Ive done my research and from what ive seen they arent that bad. Ive seen all kinds of cams. My favorite are the Kelfords but I got these cams for a steal. Im not trying to make big power right now so for now i think they should do. especally on stock valves and springs.

 

HKS 272's are good cams, just older design and not real aggressive. I made 510whp on them, and they revved out nice, but I had to run them pretty retarded to get the top end. From what I read, the best way to get power from them is to get adj gears and go for -4 intake and -1 exhaust cam timing. Either way, they did well for the $200 I paid for them. I have kelford 272s now and the power difference isn't really that much.

 

Yeah. Those 272 cams are not for squeezing all of top end power like new ones out. But I don't think there are any others that could make more TQ under 4K RPM. They spool the turbo very fast!
I just got a set of S2 but still reluctant to switch out my HKS cams...

 

Thanks for the advice on the cam gears going to for sure look into that. And I totally agree with you they arent that bad as some people say they are. eventually i want to get kelford but I got these for 200$ too FTW

 

Yeah i heard that they dont take any bottom end loss out whitch is what im looking for. Ive heard great things about the S2, kelfords, and HKS. I got the HKS for super cheap so i said why not.

 

op may i ask you why you were tuned for 22 psi on E85?

 

I honestly could not tell you the answer to that. I got the car already tuned