Whats new with Teh Gheyrod...

[C3L1CA]

Sucks to hear about the disappointing numbers.

Is a new throttle body really worth all the problems? Has anybody actually made a bunch more power with them or are you the guinea pig?

[Kracka]

Is a new throttle body really worth all the problems? Has anybody actually made a bunch more power with them or are you the guinea pig?
We'll see if its worth it, hopefully it is! I'm the guinea pig though; they were just released last week and there have yet to be any dyno tests performed. Before this getting 65mm ported stock throttle bodies was the way to go. If the Skunk2 doesn't work out I'll probably just get a Mil.Spec 65mm ported stocker.

[C3L1CA]

We'll see if its worth it, hopefully it is! I'm the guinea pig though; they were just released last week and there have yet to be any dyno tests performed. Before this getting 65mm ported stock throttle bodies was the way to go. If the Skunk2 doesn't work out I'll probably just get a Mil.Spec 65mm ported stocker.

Thats pretty sweet though! I don't think I'd have the balls to spend money on a part that just came out with no real gains behind it.

Hopefully you get everything figured out sooner than later and start making some more power.

Good luck!

[FattyBoomBatty]

There probably wasn't any money spent.

[Kracka]

There probably wasn't any money spent.
There was on the throttle body and intake manifold heat-barrier gasket.

[rose0529]

GL with the fix from skunk2!

[scheides]

Keep in mind the 2whp/nil gains were from just the ported manifold on the STOCK TB (that's what you told me on the phone, right?). The skunk one was not even really included in your test yet, because it leaked so badly. Hopefully you can get it to not leak. Once you do, I'd expect better results! Any gains to be had from a basic port job like this (similar to what I have on my car) will only really be realized with a bigger TB, and port-matching manifold inlet to that TB. Furthermore, on a stock turbo and pump gas, there aren't a ton of gains to be had, even with a more elaborate port job. Hoping for 10whp through this is reasonable though I think, and if ever a bigger turbo is put on this car, the gains will be further realized.

For reference, here is my 65mm TB matched to the IM:
http://www.scheides.com/albums/evo-intakemani/IMG_5028.sized.jpg

The stock TB is 60 or 62mm and the skunk2 one is 68mm, so the area of flow is significantly increased by doing this, so improved throttle response and a slew of other little differences make this mod worth the money.

[Kracka]

Keep in mind the 2whp/nil gains were from just the ported manifold on the STOCK TB (that's what you told me on the phone, right?).

The stock TB is 60 or 62mm and the skunk2 one is 68mm, so the area of flow is significantly increased by doing this, so improved throttle response and a slew of other little differences make this mod worth the money.
Yes, this was on the stock TB so it was a true representation of adding just a basic ported intake manifold leading be to agree with what Mil.Spec told me of not wasting the money for a basic port-job and just matching the intake manifold inlet to the ported throttle body. Hopefully we can see gains by going deeper into the IM runners/plenum though.

A few random stock specs:
Evo VIII IM inlet = 59mm
Evo IX IM inlet = 61mm
Evo VIII TB = 65mm (inlet) tapering down to 59mm (outlet)
Evo IX TB = 65mm (inlet) tapering down to 61mm (outlet)

[scheides]

Awesome specs on the stock stuff! I didn't realize the stock TB was tapered.

[Shane@DBPerformance]

If you really want to test the part properly, don't do it at max boost and the limits of the turbo and the limits of your octane. Turn the boost down to 19 or whatever and run a tune that isn't close to the edge and doesn't knock at all. You might also want to flatten out all your timing tables so that it will run the same ignition timing every run. It will be hard to see the true gains of a specific part, if the turbo is maxed or your octane is maxed.

As far as Skunk2, welcome to the world of Honda throttle bodies. Leaks, not matching to the intake manifold, sticky throttles, idle problems, etc. I wouldn't be surprised if the 68mm TB didn't lose power in the midrange or not gain much up top. The 1G DSM TB has made 850awhp, Hondas make 500-600+ on their stock TBs. I am not saying that a bigger TB wouldn't help on a car like that, but it isn't a part that is known to be a big gainer on most cars.

I have been disappointed by the bored out TBs, ported intake manifolds, ported/coated exhaust parts on the Evos and Subarus. You are lucky to get 1/10th of the power gains that some of the people hawking these parts claim.

One other potential reason you might not see as big of gains is that you guys are trying to do an objective unbiased test. While some others will make sure to take the worst possible "before" run versus the best possible "after" run.

Scheides needs to put a Red on his car, rev it to 8500 and then some of these types of parts might actually start showing big gains over stock. :)

Sorry, if I am ranting.

Hopefully the Skunk2 TB is a good piece. I hate TBs that are too touchy or sticky.