I have a friend who recently bought a 2004 WRX. He had a turbo back exhaust put on and a COBB piggyback. Also, the shop "Ported and polished" the turbocharger.
This does not make any sense to me. How could having bigger openings and polished walls change the set boost pressure? Is there something I am missing or do you think the shop felt like making some extra money? After the work, before the COBB, you could hear the turbo whine. This is supposedly what a P&P does. Though I know that you can hear the turbo whine on a PT Cruiser GT just by taking out the silencers.
So, am I missing something since I never hear people P&P the turbocharger, maybe my friend is an idiot who didnt know they meant P&P a different part, or do you think he got had?
what it does is help the air smoother and flow more air, I am assuming that anyway..
noit more boost but maybe a few hp from the smoother airflow..
LE61T PTE6262 Powered 
Wouldn't the 'porting' of a housing allow more air to bypass to compressor/turbine wheels? (I think this is the same effect as 'clipping' the turbine wheel, no?)
I could see the advantage to polishing I guess.
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What I did with my T3 I used to have was a popular job called a "port n clip". Port the compressor housing, clip the fins sliiiiiiightly. It spooled like nothing and gave me full boost all the way up. If he polished the turbo, that's just to make it look kewl even though you can't see much if it's a Subaru.
I was a retard, and now I'm permanently banned.
novaracer wrote:http://www.vfaq.com/mods/porting-turbo.html
Haha, I thought he was talking about actually porting and polishing inside the snail section (increasing a/r), not just the inlet
Yes, port-matching the inlet would help remove restriction
I'm not sure exactly what Spotabee is talking about...care to elaborate?
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