hello everybody
i want to get hks 272 cams for my evo8

do i have to change the vulve springs... and the cam gears?

or change the cams only and reflash its enough?

tnx alot

 

no you do not have to change gears and springs. cams and flash you will be in good shape

 

Hey tes, how u been over there?
To answer your question with hks cams all the way up to 280 duration you dont need to upgrade anything the only cams that need that are the high duration cams like juns cams, def. a reflash and i would suggest cam gears also, they just make it easier
Oh and ps. you cant rev past 8000 without upgrading also

 

Me personally, I don't believe in the 280 cams on anything short of a big turbo (GT30R+). Have you looked into the Helix 272 camshafts? There new ultra-light ones are same weight as the stock camshafts, and cost about $150 less than the HKS ones.

Thanks,

Gary
Gruppe-S

 

can we see a dyno sheet w/ those helix cams?

 

just bought me some hks 272's getting them installed this weekend and then getting a mail-in dynoflash

 

I like the 272/280 combo. works well on the street.

 

will there be any problems switching from hks 272's to helix 272's reguarding tune? basicly will my hks 272 tune work fine with the helix 272's?

 

nope, just did the 272s on mine not too long ago <3 them. i did headstuds along with them...

 

Sure!


2003 EVO, 10.5 hotside, conservative tune. It's basically what you'd expect on any 272 cam car with a 10.5 hotside on the stock turbo. We can push this tune to about 290-295whp (really hard to break that magic 300whp on 91octane on our dyno) but we're not comfortable letting customers leave like that.

The HKS and Helix cams perform virtually the same. You might get a bit more duration at 1mm then the HKS cams (as the Helix ramp angle is a bit different) but on a tune this is negligeble, you'll see bigger differences caused by elevation, different gas additives etc - nothing your ECU can't accomodate for.

Cheers,

Gary
Gruppe-S

 

I actually have the GSC 272/272 on my 03, and I dont have the 10.5 hotside. and when i last dynoed and i was running horribley lean 14 A/F..... I still got 298to the wheels, so i wonder what i can do now that i am tuned....

go GSC!!!

 

Hmm that doesn't sound good! Why were you running horribly lean? Usually the leaner you go on the 4G63 motor the more power you make, but obviously not with the ECU pulling timing if your detonating.

Gary
Gruppe-S

 

not that lean, dangerous, im just happy i didnt blow my motor...

when i went to dyno my car the guys threw it on there with a wideband and it was 13s, and the guys went to richen it up, they leaned it out even more with my safc never again....

 

this 10.5 hot side is worth something? its realy cheap but does it make any diffrence ? or just a bit ...

what about the evo9 turbo? its bigger than the one on the 8 right?

at the moment my car is with 3 inch turbo back and costum made 3 inch turbo outlet, and tubular exoust manifold, greddy spec2 boost controler (stock boost)

how hp more or less possible to get with this setup + walbaro 255 + 272 cams and this hot side 10.5 on stock turbo

also bigger FMIC is on the way + injen piping & intake

 

evo4g63awd - damn! You can try the Ecuflash reflash (rather than SAFC) those maps are floating around on the net these days for free!

TES - Yes, the 10.5 hotside makes a world of difference on the 03-04 EVO's. We see about 10whp usually on a pump gas car with cams. The EVO IX turbo is worth about another 10whp as the compressor housing is much larger. There is some welding work to the charge pipe to get this turbo to fit however. I'd say with a 10.5, cams, and a good tune you're looking at 25-30whp gains. I'd hold off on the FMIC until you get an upgraded turbo.

Have you taken a look at the ultra light Helix 272 camshafts?

Thanks,

Gary
Gruppe-S