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Old 01-10-2006, 09:52 PM   #1
1-3-2-4
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Default '06 WRX exhaust manifolds vs. STi manifolds

From what I've gathered, the 2.0 WRX and STi exhaust manifolds are not interchangeable. But, will exhaust manifolds from an STi fit my 06 WRX? I would like to have a set of manifolds to tap for an EGT gauge and maybe port/coat but I don't want any downtime and I found a set of STi manifolds...go or no go?

Thanks!
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Old 01-10-2006, 10:08 PM   #2
crazymikie
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The WRX and STi manifolds look to be exactly the same.

I've never measured the ports with a micrometer, however, they look identical.

I would check the part numbers to be sure.


Mike
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Old 01-10-2006, 11:00 PM   #3
shotoyan
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I think they're different. At least they are in the 06 service manual (there are separate instructions on removing/installing the manifolds, the torque specs are different for the bolts, and from the drawn pictures they look quite different)
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Old 05-08-2006, 07:55 PM   #4
1-3-2-4
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Well, I hate to bring this up again, but I still haven't gotten a solid answer. I read a few that go either way. I'm going to call a dealer as soon as I get a chance, but until then, does anybody have any first hand experience? I'd like to pick a set up for porting before I get Protuned...
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Old 05-08-2006, 08:47 PM   #5
wrxfactor
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I don't see why they wouldn't. BTW, my 2.0L WRX heads bolt onto my EJ257, at least they have to if my car is going to run.
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Old 05-08-2006, 09:44 PM   #6
Uncle Scotty
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....the whole exhaust---both manifolds and the cross pipe.... MAY be interchangeable as a unit....BUT-----I tried to swap the drivers side manifold off my '02(to keep my EGT) with my '06 and it wasn't even CLOSE
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Old 05-08-2006, 09:46 PM   #7
1-3-2-4
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Thanks for the input, but damn, that sucks. I thought I remembered reading one of your posts about this, but I couldn't find it. I guess I'd probably have to swap the up-pipe as well?

If this is the case, I guess I'll just port mine and drive the rocco in the meantime
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Old 05-08-2006, 09:53 PM   #8
Uncle Scotty
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Quote:
Originally Posted by 1-3-2-4
Thanks for the input, but damn, that sucks. I thought I remembered reading one of your posts about this, but I couldn't find it. I guess I'd probably have to swap the up-pipe as well?

If this is the case, I guess I'll just port mine and drive the rocco in the meantime

...send it all to Crucial for P&P/coating and get the Injen crosspipe, coated, and the Crucial coated UP and then ya got it coated all the way from the head to the turbo-----MAD spool
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Old 05-08-2006, 10:34 PM   #9
1-3-2-4
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Quote:
Originally Posted by Uncle Scotty
...send it all to Crucial for P&P/coating and get the Injen crosspipe, coated, and the Crucial coated UP and then ya got it coated all the way from the head to the turbo-----MAD spool
I am definitely going to get it all coated. I had contacted crucial about a core swap and they told me they no longer did it. So essentially, I'd need to take mine off and send them in...get the ported/coated...send them back and...bolt them on. They didn't quote me a price, but I have a feeling I could buy a die grinder, do it myself one weekend and wind up with ported manifolds and a die grinder for the same price...so basically I'm not sure what I'm going to do.

I'll look into the Injen x-pipe though, I have only heard of it in passing up until now.
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