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Old 04-02-2006, 11:06 PM   #1
RainMaker
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Member#: 93301
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Portland, Oregon
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06 CGM STI SM#17
Now with alot less verve!

Default Interested in a stock manifold/ported/ported + crosspipe/equal length header comparo?

Hey all,

I have bought all the stuff for a dyno comparison (and road spool logging) of the following items:

1. stock manifold (a stage 2 06 STi)
2. IOTA (Gotpnp.com) ported manifolds and crosspipe
3. Crucial Racing ported and coated manifold and coated Injen crosspipe
4. Perrin's new Equal Length headers

Since Im in Portland, I figure it shouldnt be hard to sell what I dont choose.

GreggPDX and I are currently looking at footing the $300+ dyno bill for doing the comparo. We are objective and we dont sell anything related to cars. We have in town a mirriad of AWD dynos, and we'd like to use the Dynojet AWD.

We are wondering if anyone else would be so generous as to help us with the $300+ dyno bill. We will do all the wrenching and the logging, AFR, etc. We plan on letting the car learn in the new ignition advance, so we will be using 4+ dyno sessions during either the same day, or a few days apart.

We will publicize the results no matter what, and we arent going to withhold the info even if we dont get a single dollar. We will take suggestions on reducing variables and the data folks want collected. We have seen a serious deficit of objective data on ported manifolds and headers. We admit we dont have a non-equal length header, but neither of the two of us see ourselves interested in them, so I didnt buy any. If folks want to let us borrow a set of non-equal length headers and people here contribute more than $75 (one dyno session), we'll include them too. I'll pay the FedEx ground postage back to you (within the 48 states). If a vendor wants in, they get to send me a header and $75

If you are interested in helping out, I'll give credit to all those who paypal any amount over $5 to [email protected] with the results. Please include your screen-name with your payment if you want me to put it up. We are in no way in this for profit, so if the amount gets over the dyno bills, I'll return the money and still give credit (though note that the money was too much and we returned it).

Help us finally do a proper, transparent test of headers and ported manifolds!

thanks,
Chris
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Old 04-04-2006, 12:30 PM   #2
RainMaker
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Member#: 93301
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Portland, Oregon
Vehicle:
06 CGM STI SM#17
Now with alot less verve!

Default

I guess, folks, that I had expected alot more response. I hear an amazing amount of subjective discussion as to the power-benefits of headers (or the spool harm). It seems weekly that someone asks what headers are worth, having searched and found nothing but supposition.

Perhaps its all an excuse to argue over the internet.. rather than an honest curiosity. Either way, I'll put my money where my mouth is and do it.

Chris
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Old 04-04-2006, 12:34 PM   #3
slvr02scooby
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Good luck with it Chris I just did the comparison of my 18g with stock headers and then headers with Crucial loving (minus injen crosspipe) So i'd be curious to see the gains on yours compared to mine without the crosspipe. But trust me, the gains are there
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Old 04-04-2006, 01:08 PM   #4
RainMaker
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Now with alot less verve!

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Quote:
Originally Posted by slvr02scooby
Good luck with it Chris I just did the comparison of my 18g with stock headers and then headers with Crucial loving (minus injen crosspipe) So i'd be curious to see the gains on yours compared to mine without the crosspipe. But trust me, the gains are there
No kidding???
Can you PM me with some details and perhaps a few numbers?
I'd love to gather some 2.0 data too.

thanks,
Chris
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Old 04-04-2006, 01:22 PM   #5
BREWPUBEAVER
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do you need more set`s of headers?

i have some if you need more
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Old 04-04-2006, 01:24 PM   #6
RainMaker
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Now with alot less verve!

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Quote:
Originally Posted by BREWPUBEAVER
do you need more set`s of headers?

i have some if you need more
Thanks, Dave, but I got ahold of enough manifold cores (at this time) to keep the porters happy.
If you (on the other hand) have *headers* such as a nice set of un-equal length (Gruppe-S or similar), I'd love to give them a go on the dyno (and then return them).

Chris
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Old 04-04-2006, 01:25 PM   #7
keaniegenie
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Do a comparison with the APS too and I'll chip in.
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Old 04-04-2006, 01:33 PM   #8
BREWPUBEAVER
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sorry man....

i have the AVO headers that i have jet black turbo heat coated and then i wrapped them, follow`d by the 2000* spray paint stuff.

it is a real PAIN in the butt to remove them. you pretty much have to lift the whole motor.

it really isnt worth the wrench time on MY set.

Sorry
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Old 04-04-2006, 01:36 PM   #9
RainMaker
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Now with alot less verve!

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The Perrin is very very close to the APS, but it doesnt have a specific Up-pipe requirement. The Perrin can be used with Rotated kits, and with external-gate kits.

I (personally) have an external gate on my stage 4 car (where the Perrins will most likely end up), so my first priority is a set of the Perrins.

If someone *has* a set of the APS, we might entertain the notion of testing them as well on the stage 2 car we are doing this test with. I am weary of the labor involved in the up-pipe swap though. Headers by themselves are pretty trivial (especially if you leave the bottom cover off during the whole testing time). Swapping out the APS would add a bit of complication, I think.

Chris
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Old 04-04-2006, 01:38 PM   #10
RainMaker
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06 CGM STI SM#17
Now with alot less verve!

Default

Quote:
Originally Posted by BREWPUBEAVER
sorry man....

i have the AVO headers that i have jet black turbo heat coated and then i wrapped them, follow`d by the 2000* spray paint stuff.

it is a real PAIN in the butt to remove them. you pretty much have to lift the whole motor.

it really isnt worth the wrench time on MY set.

Sorry
No problem... that makes sense.

I've got all the headers/manifolds I'm personally curious about... so no harm to me
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Old 04-04-2006, 09:14 PM   #11
CosmoTheCat
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Closing this pending approval from above as well as it's definately in the grey area.
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