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Another ? for those with 3" down-pipes

 
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Old 08 Apr 2004, 09:17 am
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Join Date: May 2003
Location: Prineville, Oregon, USA.
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Default Another ? for those with 3" down-pipes

This question is for MEXICANPT and others who have switched over to a 3" down-pipe and cat.

Did any of you also replace the O-2 housing? That's where the exhaust actually has the smallest diameter...right after the turbo and just before the down-pipe.

I have my order in with Maxx Fabrication, but it wasn't until this morning that I realized that even with a 3" downpipe and cat there is still a bottle neck.

Deen

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Old 08 Apr 2004, 03:24 pm
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Join Date: Dec 2002
Location: Dallas, TX.
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Hyracer - I have retained the stock O2 housing. I did't have the wherewithall to do the O2 housing due to cost and higher difficulty of installation than the downpipe. I was also taking to heart what 3BarBoost said on the forum - that the cat was the major restriction and that the stock O2 housing should be good through Stage 3. Sorry I don't have the link to his message on that. I'm not currently staged, and am planning to wait and see on Stage 2 before I go for Stage 1.

Maxxfab makes an O2 housing that looks nice - it's fabricated rather than a casting and it has support brackets. There's a picture of it on their website.
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Old 08 Apr 2004, 04:44 pm
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I also retained the stock 02 housing, but rest assured, teh difference is very noticeable.
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Old 09 Apr 2004, 07:37 am
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Thanks guys!

I got an e-mail back from Maxx-Fab also stating I wouldn't see a major differance by purchasing the O-2 housing until we start boosting upwards of 18-19 psi. Guess I can always add the O-2 housing later if I get the urge to step on it that hard...

Deen

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