Meet GheyRay: Lower, Wider, Lighter!

[Kracka]

I finally had the MAP ported & coated exhaust manifolds installed today! Below is the before & after dyno chart. I'm very happy with the results, and the shop said they were surprised by the gains. The gains were about half what long-tube headers show which I think is fair considering these are emissions, warranty, and stock tune friendly by retaining the stock pair of primary cats (the X-pipe install from last week deleted the secondary cats).

+11WHP/+8WTQ

http://www.mitsustyle.com/photopost/data/686/medium/0117151342.jpg

Full mod list:
-AFE intake
-WeaponX ported throttle body
-MAP ported & coated exhaust manifolds
-Borla X pipe
-Diablo InTune (custom DiabLew tuned)

[Halon]

Cant beat that, and retains oem fitment / quality.

[Kracka]

Cant beat that, and retains oem fitment / quality.
Exactly my thinking! No durability issues, no extra noise or annoying sounds, etc.

[Mark Leasure]

Agree, nice gain for the benefit of stock durability.

[Kracka]

If anyone cares, this shop is owned by John Lingenfelter's daughter and her husband.

[turbotalon1g]

I thought I've heard of that shop before.

Nice gains. Should help the supercharger breath..

[Kracka]

A month or so back I bought a stock intake manifold and had it shipped directly to MAP for their inspection and porting (if deemed necessary). Fast-forward to last week and the guys at MAP inspected the manifold and deemed porting not necessary so they shipped it back to me. This did surprise me since other companies are already offering intake manifold porting ($200-400 depending on company and level of porting) for the LT1 and claiming that gains are possible. Here are some pictures that I took. Overall, the stock manifold is a very nice design with individual radiused runners. It is plastic so it is smoother than a rough cast aluminum and more ideal in design, but there are definitely still some lips and edges that could be smoothed out, along with that PCV vacuum straw that runs directly behind the inlet. Thoughts? Theories? Ideas?

I'm currently toying with 3 ideas:
1. Selling it for ~$200 and not worrying about it.
2. Do a little self-porting with a Dremel to smooth out the lips/edges and cutting down the straw.
3. Send it to Fasterproms for their $200 service.

Weapon-X, company that ported my throttle body, offers two levels of service, Stage 1 for $349, and Stage 2 for $399, but both of which seem excessive for my setup.

TOP
http://www.mitsustyle.com/photopost/data/686/medium/0126152044.jpg

BOTTOM
http://www.mitsustyle.com/photopost/data/686/medium/0126152045a.jpg

INLET
http://www.mitsustyle.com/photopost/data/686/medium/0126152045b.jpg

RUNNER
http://www.mitsustyle.com/photopost/data/686/medium/0126152046.jpg

[Speedfreak]

Sell it. I'd question whether there are any real efficiencies to be gained by porting those minor items.

[A//// Guy]

Yea... seems like a waste of time/effort for maybe a couple hp?

[Kracka]

Sell it. I'd question whether there are any real efficiencies to be gained by porting those minor items.
Yea... seems like a waste of time/effort for maybe a couple hp?
You guys share Kyle's (@ MAP) thoughts, he basically said the exact same thing.