I had similar thoughts, ended up going with cams, and I made the right choice... comp 272's bumped me up 44 awhp and 40 awtq...
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was the only thing changed the cams?
Sorry to say this but you should *seriously* consider doing more research using the search button up top. Gains like this are pretty typical when going from stock cams to a decent cam on an 8.Originally Posted by AlwaysinBoost
^ is that typical of HKS 280's? 35-40whp seems a bit much... what else is done to that car. was the only thing changed the cams?
Before: mbc, Buschur intake pipe & filter kit, BR 3" TBE w/ hiflo cat, and BR deluxe FMIC kit w/ UICP.
After: HKS 280's, Arp headstuds (not necessary at this level but I was planning for 35r at the time), walbro fuel pump, SMC alky kit (basically just used to extend the life with the stock injectors....later I upped the boost to 26psi, never got numbers from that.
So, to answer your question, yes. This is typical. The reason I went with HKS 280's in the first place is because a friend put them on his 04 evo8. He went from 240whp to 280whp. I was sold
I went with headwork first (cams/valvetrain) GSC S2's Supertech Duals/ARP studs
Im sure the end results will be nice, plus nothing sounds better than an evo with Aggressive cams.
Max out your stocker, save up some green and go TS 3076r.
Im sure the end results will be nice, plus nothing sounds better than an evo with Aggressive cams.
Max out your stocker, save up some green and go TS 3076r.
Evolved Member
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Before: mbc, Buschur intake pipe & filter kit, BR 3" TBE w/ hiflo cat, and BR deluxe FMIC kit w/ UICP.
After: HKS 280's, Arp headstuds (not necessary at this level but I was planning for 35r at the time), walbro fuel pump, SMC alky kit (basically just used to extend the life with the stock injectors....later I upped the boost to 26psi, never got numbers from that.
So, to answer your question, yes. This is typical. The reason I went with HKS 280's in the first place is because a friend put them on his 04 evo8. He went from 240whp to 280whp. I was sold
sorry but I'm lazy. its much easier to hit the quote button and ask a couple questions rather then sort threw a couple hundred posts that come up in a search. Originally Posted by scheides
Sorry to say this but you should *seriously* consider doing more research using the search button up top. Gains like this are pretty typical when going from stock cams to a decent cam on an 8.Before: mbc, Buschur intake pipe & filter kit, BR 3" TBE w/ hiflo cat, and BR deluxe FMIC kit w/ UICP.
After: HKS 280's, Arp headstuds (not necessary at this level but I was planning for 35r at the time), walbro fuel pump, SMC alky kit (basically just used to extend the life with the stock injectors....later I upped the boost to 26psi, never got numbers from that.
So, to answer your question, yes. This is typical. The reason I went with HKS 280's in the first place is because a friend put them on his 04 evo8. He went from 240whp to 280whp. I was sold
your results shocked me because I've had those cams sitting on my shelf for about two years now and never have I seen someone get an increase of 35-40whp across the entire RPM range. Usually there is less of a gain in the mid-range and most of the power comes in up top. Your dyno looks like it gained power everywhere, which makes it look like the boost was increased, which is why I asked.
Evolving Member
do both!!
My old setup was a conservative 93oct. tune at 22psi with hks 272's - 320whp 320wtq (dynojet)
Then I built the motor, maybe picked up some power from the balance shaft delete, but the 2 big power makers that changed was I put kelford 272's in and a evo9 turbo, ported with SS o2 housing - 360whp 345wtq, SAME boost, it made more power everywhere above 2500rpm. Below 2500 it lost a little power, but its so little I can't tell on the road. Oh and my old setup was professionally tuned and this time around I tuned it myself. There might be more in it, but its safe for the wacky chicago gas.
If you can swing it, do both, if you can't, I would do the cams first, just get it out of the way.
My old setup was a conservative 93oct. tune at 22psi with hks 272's - 320whp 320wtq (dynojet)
Then I built the motor, maybe picked up some power from the balance shaft delete, but the 2 big power makers that changed was I put kelford 272's in and a evo9 turbo, ported with SS o2 housing - 360whp 345wtq, SAME boost, it made more power everywhere above 2500rpm. Below 2500 it lost a little power, but its so little I can't tell on the road. Oh and my old setup was professionally tuned and this time around I tuned it myself. There might be more in it, but its safe for the wacky chicago gas.
If you can swing it, do both, if you can't, I would do the cams first, just get it out of the way.
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your results shocked me because I've had those cams sitting on my shelf for about two years now and never have I seen someone get an increase of 35-40whp across the entire RPM range. Usually there is less of a gain in the mid-range and most of the power comes in up top. Your dyno looks like it gained power everywhere, which makes it look like the boost was increased, which is why I asked.
Let me get this straight. You've had a nice set of cams sitting on your shelf for 2 years AND you're too lazy to search to see if its worth installing them.....when you already have them. For christ's sake, get off your butt, go install them. Then, buy an IX turbo, ported exhaust manifold, and SS 02 housing, and get tuned. You'll need injectors now too (most likely) so pick up a set of 650's and a fuel pump (if you don't have one already) and GET R DONE!Originally Posted by AlwaysinBoost
sorry but I'm lazy. its much easier to hit the quote button and ask a couple questions rather then sort threw a couple hundred posts that come up in a search. your results shocked me because I've had those cams sitting on my shelf for about two years now and never have I seen someone get an increase of 35-40whp across the entire RPM range. Usually there is less of a gain in the mid-range and most of the power comes in up top. Your dyno looks like it gained power everywhere, which makes it look like the boost was increased, which is why I asked.
Newbie
Cams are a great choice, but you might consider a bigger set than s1's. s2's are a great cam for stock or bigger turbo and still very good drivability.
Evolved Member
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I never said I was too lazy to search about installing them, I said I've never seen results like yours from JUST a cam install. Originally Posted by scheides
Let me get this straight. You've had a nice set of cams sitting on your shelf for 2 years AND you're too lazy to search to see if its worth installing them.....when you already have them. For christ's sake, get off your butt, go install them. Then, buy an IX turbo, ported exhaust manifold, and SS 02 housing, and get tuned. You'll need injectors now too (most likely) so pick up a set of 650's and a fuel pump (if you don't have one already) and GET R DONE!
I'm still having a hard time believing those results are from only a cam swap and nothing else. you sure you didn't raise the boost and spray that meth kit you installed at the same time as the cams???
Evolving Member
im in the same spot but now iv decided cams....now my ? is gsc s2 or kelford 272s lol dont really have the money to do the whole springs and retainers bit tho....any suggestions 04 VIII with bolt ons
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I'm still having a hard time believing those results are from only a cam swap and nothing else. you sure you didn't raise the boost and spray that meth kit you installed at the same time as the cams???
Boost was about 1psi higher. Maybe I got an extra degree of timing out of it from the meth kit, maybe not...it was a super super conservative tune b/c my car had aweful tip-in knock probs. Originally Posted by AlwaysinBoost
I never said I was too lazy to search about installing them, I said I've never seen results like yours from JUST a cam install. I'm still having a hard time believing those results are from only a cam swap and nothing else. you sure you didn't raise the boost and spray that meth kit you installed at the same time as the cams???
Seriously though, install them already. An evo8 w/o cams is just plain lame!
Evolved Member
Now you're saying you did up the boost, but just 1psi, and you did spray meth.... but only a little. 
Big deal. All cars are different, and the big power adder was the cams. If someone else does this and "only" sees 30whp gains, then they will still be better off doing these cams before upgrading to an IX turbo.
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Originally Posted by boostinmarc4
Cams are a great choice, but you might consider a bigger set than s1's. s2's are a great cam for stock or bigger turbo and still very good drivability.
This is what the GSC site states:
GSC S1 MIVEC Cams are designed for the stock turbo or small turbo upgrades. Incredible power gains over stock cams, gives up nothing and only gains across the entire RPM Band.
GSC S2 MIVEC Cams are designed for higher horsepower Evo IX motors with a power range of 450whp-700whp. With a Rev Range of 3800-8800RPMS.
That’s why I am thinking about the GSC S1. What I will have is a stock turbo appearance Evo IX turbo.