Stillen Headers and HFC's Before/After Dynos
High Flow Cats = 450
Exhaust = 1000+
Headers = 700
Install = 1000
Intakes = 450
Total = 3600!!!
Weight savings prolly 50 LBS, HP gained total prolly 27-30HP Little nicer low end torque 20-25LBS... Now imagion you skip the intakes and get a supercharger! Everything thing will run more efficiant and flow better. You will get better gains from supercharger without adding boost... Plus it will sound MUCH better!
Exhaust = 1000+
Headers = 700
Install = 1000
Intakes = 450
Total = 3600!!!
Weight savings prolly 50 LBS, HP gained total prolly 27-30HP Little nicer low end torque 20-25LBS... Now imagion you skip the intakes and get a supercharger! Everything thing will run more efficiant and flow better. You will get better gains from supercharger without adding boost... Plus it will sound MUCH better!
Supercharger is boost....right....
Registered User
Joined: May 2003
Posts: 121
Likes: 0
HFCs are closer to 500 bucks... and normally you pay 150 for the install of them.... after taxes and lil stuff your flirting with 2500 bucks... add a cattback installed and your looking around 3700 bucks... add intakes and your looking at over 4k....ouch ouch ouch... but ...hey ... its a hobby... mods are toys and luxury items... you gotta pay to play...
We all make mistakes
Last edited by MaxToTheG37; Apr 1, 2008 at 09:31 AM. Reason: :)
If you get a Supercharger/Turbo, you still need the aftermarket exhaust and HFC's. Plus a handful of other parts + tuning. Buy parts that will one day compliment your forced induction if those are your ultimate plans.
From Z to G
Joined: Jan 2008
Posts: 276
Likes: 0
From: S. Atlanta
I agree. But defiantly wouldn't have HFC on a FI system. But also I don't have emissions where I live and I somethimes forget about things like that. Build for the future. But on these motors headers are going to be small, even with FI. The factory manifold flow pretty well on this motor. And obviously turbo's are not going to have turbo manifolds. Unless single turbo. But I don't really see anyone going that route no more on this motor. That's another story in it's self.
High Flow Cats = 450
Exhaust = 1000+
Headers = 700
Install = 1000
Intakes = 450
Total = 3600!!!
Weight savings prolly 50 LBS, HP gained total prolly 27-30HP Little nicer low end torque 20-25LBS... Now imagion you skip the intakes and get a supercharger! Everything thing will run more efficiant and flow better. You will get better gains from supercharger with the 8 PSI pully... Plus it will sound MUCH better!
Exhaust = 1000+
Headers = 700
Install = 1000
Intakes = 450
Total = 3600!!!
Weight savings prolly 50 LBS, HP gained total prolly 27-30HP Little nicer low end torque 20-25LBS... Now imagion you skip the intakes and get a supercharger! Everything thing will run more efficiant and flow better. You will get better gains from supercharger with the 8 PSI pully
... Plus it will sound MUCH better!
Registered User
Joined: Jul 2007
Posts: 6,301
Likes: 1
From: al, eguor notab
i disagree, with a hfc and exhaust, you are already around 18 hp. with the other things, you can get it up around that mark.
One thing you have to remember is that you cannot add up the supposed gains from each piece and voila... huge power gains. Some pieces work with each other and some take away. So your numbers are going to be less than you would think... or hope.
I agree. But defiantly wouldn't have HFC on a FI system. But also I don't have emissions where I live and I somethimes forget about things like that. Build for the future. But on these motors headers are going to be small, even with FI. The factory manifold flow pretty well on this motor. And obviously turbo's are not going to have turbo manifolds. Unless single turbo. But I don't really see anyone going that route no more on this motor. That's another story in it's self.
Of course no cat with a turbo set up would be optimal but I would say that if you needed to stay smog legal that a metal substrate as opposed to ceramic would be wise considering the fact that a FI setup runs very rich for saftey. The unburned (or still burning) fuel that exits the cylinder, thru the turbine and on to the cat can melt down a mortal cat under track duty. I've seen this a few times on aftermarket turbo applications.
But hey, prove me wrong.
