Forced induction and headers
Team Owner
Joined: Nov 2007
Posts: 24,035
Likes: 2,342
From: Gilbert AZ
Depends on what you mean by much. If you are hoping for 200rwhp, then no, they don't add that. Then again they don't add that on n/a builds. Headers are pretty much a must have on a blower car. You are forcing air in, you need to get it out. I've seen 50+ gains with adding headers on a mild blower setup. Heck, I'm hoping for 20-35rwhp gains just going from one header to a different one.
Thread Starter
Instructor
Joined: Jul 2013
Posts: 103
Likes: 15
Depends on what you mean by much. If you are hoping for 200rwhp, then no, they don't add that. Then again they don't add that on n/a builds. Headers are pretty much a must have on a blower car. You are forcing air in, you need to get it out. I've seen 50+ gains with adding headers on a mild blower setup. Heck, I'm hoping for 20-35rwhp gains just going from one header to a different one.
Melting Slicks
Joined: Apr 2007
Posts: 2,987
Likes: 16
From: Phoenix
Since they rate their stuff at the flywheel and not wheel HP, then I would guess that package is somewhere in the 550rwhp range. While not necessary for that level, they definitely would add power above what they rate that package for. I also wouldn't have them do my car since I'm a cheap bastard and I like centri blowers better.
Last edited by jon6.0; Jan 6, 2014 at 05:31 PM.
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Melting Slicks
Joined: Mar 2007
Posts: 2,391
Likes: 23
From: Santa Barbara CA
I wish I had thrown my car on the dyno with the full LS9/ZR1 exhaust setup last year before I pulled them off for a set of Pfadt headers. I'm sure there was a 30 rwhp difference, but at ~700 whp, it's kind of hard to tell from the SOP difference.
I will say that the manifold setup was less tolerant of timing and showed more knock retard during tuning. I wasn't able to run the kind of timing I could with headers. I'd suspect a stock LS3 manifold setup would be quite a bit worse, too.
I will say that the manifold setup was less tolerant of timing and showed more knock retard during tuning. I wasn't able to run the kind of timing I could with headers. I'd suspect a stock LS3 manifold setup would be quite a bit worse, too.
Melting Slicks
Joined: Oct 2007
Posts: 2,569
Likes: 170
I wish I had thrown my car on the dyno with the full LS9/ZR1 exhaust setup last year before I pulled them off for a set of Pfadt headers. I'm sure there was a 30 rwhp difference, but at ~700 whp, it's kind of hard to tell from the SOP difference. I will say that the manifold setup was less tolerant of timing and showed more knock retard during tuning. I wasn't able to run the kind of timing I could with headers. I'd suspect a stock LS3 manifold setup would be quite a bit worse, too.