anyone paint their intake manifold sti red

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11-25-2002, 08:57 AM

#16

SubaruFan

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Imprezer... did you notice any power increase after you got the manifold extrude honed?? A friend of mine has a Mustang Cobra and those guys have been basically dremeling and sanding down the inside of their manifolds to make them completely smooth (the inexpensive way, although $250 isn't bad)... they've been gaining like 5-8whp.

I wonder if doing this to the WRX manifold would give the same results. I've never actually looked inside one so I don't know if this would even be possible. I'm sure they're similar in the fact that they're both cast (?) and have some very rough edges internally. THANKS!

11-25-2002, 09:49 AM

#17

stealth-wrx

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whats up robert.

11-25-2002, 10:10 AM

#18

stealth-wrx

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alex:

did you just remove the tvg plates or the entire unit. if you removed the entire units did you weld the holes on the side shut. thanks

11-25-2002, 10:49 AM

#19

Lobster Man

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Yea, Alex, post some pics.

11-25-2002, 10:48 PM

#20

stealth-wrx

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oh well i did not feel like dealing with the holes on the factory tvg housings so i just bought some sti ones for $150 for both. cant wait till the get here.

11-25-2002, 11:58 PM

#21

Imprezer

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The TGV plates and shats were completely removed, welded shut and then the TGV's were gasget matched. That was before I knew I could just get the STi ones. Oh well.

Gains from all that? Not sure. I have lots more done so cannot say what that alone did. I am sure it helped. The car IS a bit harder to start in the morhing then before though.

- Alex

11-26-2002, 12:19 AM

#22

Scubaru

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Wow Alex, that a pretty engine shot. Would you mind sending me a high res shot of that? Pm or email. Seems like the alt. belt runs awfly close to the inlet pipe.

thanks

-scu