huge gains?
Thread Starter
Junior Member
Joined: Sep 2006
Posts: 3
huge gains?
what whp am i looking at with these following mods:
1. stage 1 head by zpi
2. zpi crank pulley
3. camcon vvti controller
4. dc race header
5. injen cai
6. draxas full exhaust ( s pipe, mid pipe, axle back)
1. stage 1 head by zpi
2. zpi crank pulley
3. camcon vvti controller
4. dc race header
5. injen cai
6. draxas full exhaust ( s pipe, mid pipe, axle back)
Senior Member
Scikotics
SL Member
Joined: Jul 2006
Posts: 197
i'm gonna give it a shot...
25 whp with head work
10 with crank pulley
dunno about vvti controller
10 with header
7 with cai
4 with full exhaust
55-60 whp
just from what i've read...don't know much about the stage 1 head or comcon vvti controller
25 whp with head work
10 with crank pulley
dunno about vvti controller
10 with header
7 with cai
4 with full exhaust
55-60 whp
just from what i've read...don't know much about the stage 1 head or comcon vvti controller
Senior Member
Scikotics
SL Member
Joined: Nov 2004
Posts: 9,731
From: Minneapolis, MN
First, a crank pulley (other than fooling an inertial dyno) actually gains you no hp if you look at the simple physics involved. It allows the engine to rev and slow down faster. At a static rpm, the power output is the same.
Second, you cannot add the gains of each mod.. it does not work that way.
Head, 20hp claimed, but I would want to see a dyno to see it
VVti controller I have heard mixed results of it even working correctly. Remember, the point of VVTi is to acheive a better balance of power, emmissions and economy, so you are only going to tune so far and the ECU is going to fight you the whole way. Header, 10 if you are lucky.. and that is a peaky gain. CAI.. once the ECU stops running lean afterwards (which is when all the test dynos have been run by the manufacturers) will gain you 1-2 if you are lucky. But not enough to ever notice. Not to mention they heat soak like a biatch. Full exhaust, maybe 5.
Everything you mentioned put together... probably 25 - 30 if you are lucky. And the gains will not be over the entire band, which makes them less noticeable.
Remember that peak hp gains mean jack. It is where they all fall in the band that matters.
Second, you cannot add the gains of each mod.. it does not work that way.
Head, 20hp claimed, but I would want to see a dyno to see it
VVti controller I have heard mixed results of it even working correctly. Remember, the point of VVTi is to acheive a better balance of power, emmissions and economy, so you are only going to tune so far and the ECU is going to fight you the whole way. Header, 10 if you are lucky.. and that is a peaky gain. CAI.. once the ECU stops running lean afterwards (which is when all the test dynos have been run by the manufacturers) will gain you 1-2 if you are lucky. But not enough to ever notice. Not to mention they heat soak like a biatch. Full exhaust, maybe 5.
Everything you mentioned put together... probably 25 - 30 if you are lucky. And the gains will not be over the entire band, which makes them less noticeable.
Remember that peak hp gains mean jack. It is where they all fall in the band that matters.
Senior Member
SL Member
Joined: Sep 2006
Posts: 308
From: Orlando, FL
Originally Posted by engifineer
First, a crank pulley (other than fooling an inertial dyno) actually gains you no hp if you look at the simple physics involved. It allows the engine to rev and slow down faster. At a static rpm, the power output is the same.
Second, you cannot add the gains of each mod.. it does not work that way.
Head, 20hp claimed, but I would want to see a dyno to see it
VVti controller I have heard mixed results of it even working correctly. Remember, the point of VVTi is to acheive a better balance of power, emmissions and economy, so you are only going to tune so far and the ECU is going to fight you the whole way. Header, 10 if you are lucky.. and that is a peaky gain. CAI.. once the ECU stops running lean afterwards (which is when all the test dynos have been run by the manufacturers) will gain you 1-2 if you are lucky. But not enough to ever notice. Not to mention they heat soak like a biatch. Full exhaust, maybe 5.
Everything you mentioned put together... probably 25 - 30 if you are lucky. And the gains will not be over the entire band, which makes them less noticeable.
Remember that peak hp gains mean jack. It is where they all fall in the band that matters.
Second, you cannot add the gains of each mod.. it does not work that way.
Head, 20hp claimed, but I would want to see a dyno to see it
VVti controller I have heard mixed results of it even working correctly. Remember, the point of VVTi is to acheive a better balance of power, emmissions and economy, so you are only going to tune so far and the ECU is going to fight you the whole way. Header, 10 if you are lucky.. and that is a peaky gain. CAI.. once the ECU stops running lean afterwards (which is when all the test dynos have been run by the manufacturers) will gain you 1-2 if you are lucky. But not enough to ever notice. Not to mention they heat soak like a biatch. Full exhaust, maybe 5.
Everything you mentioned put together... probably 25 - 30 if you are lucky. And the gains will not be over the entire band, which makes them less noticeable.
Remember that peak hp gains mean jack. It is where they all fall in the band that matters.
I hate when people just add up hp numbers....like it would be that easy.
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