Stiegemeier Ported M62 Before & After
interesting, gives me an option with my spare blower as well.
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same setup i'm going to
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same setup i'm going to
Last edited by kanabrewski; Oct 23, 2007 at 10:06 PM. Reason: Automerged Doublepost
I didn't expect this many replies, lol... I gotta run but since everyone is wondering about pricing its $395 for the porting work, another $300 for the polishing, and I paid $50 for shipping but I'm pretty close to them. Then if you pay with money order or cashier's check they give you a 5% discount so $725 total for me.
I wasn't going to get the polishing done but the porting work was less than the $500 I expected and the $300 polishing price tag was also lower than I thought so I went for it.
I wasn't going to get the polishing done but the porting work was less than the $500 I expected and the $300 polishing price tag was also lower than I thought so I went for it.
Also dyno test it, because the triangle opening is not opened very much, but I see porting in the intake part (sometimes causes sensor errors)
20-25hp NEVER! LOL, it only helps in a little bit. It was probably the worst hp/$ ratio spent in a while on the Cobalt. But on the other hand, I don't know another supercharger that looks that god on the outside :-)
I guess it's a matter of how much money you can spend. But it's definitely one of the more expensive mods. And although the whine does get louder, temps only drop a little bit, and there is usually NO additional boost.
Last edited by Psykostevo; Oct 23, 2007 at 10:25 PM. Reason: Automerged Doublepost
Crap, I shoulda worn a mask when i did mine...wait, what are we talking about?
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But there's no dyno near me that I know of, closest one I know of is a 90 minute drive.
I saw my IAT2s go up to 149 once when I was out for a spin with the car. But it could've been higher; I was trying to watch the road, the boost gauge, and everything else. They did drop immediately though since I'm set up with a dual pass option B and a Cobra heat exchanger. Hard to get a good handle on your IAT2s without data logging. I popped the hood after my 20 minute loop and the housing wasn't as hot to the touch as the stock one usually is and I had obviously been a lot harder on the car...
Someone asked about boost levels - I was seeing 14-15 with the stock blower with a Stage II pulley and about 16 with a 2.95" pulley on the ported blower. Nothing too unexpected there. I've read in more than one place that a ported blower can lower boost levels.



