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2G 3" downpipe to go with R&D Thermal Catback Exhaust

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Utz_3

10+ Year Contributor
57
8
Apr 15, 2012
Miami, Florida
Before I get reprimanded and sent to look at other existing threads, I'd like to say that I have searched and have not found much detailed information on the OBX or CX Racing downpipes, that's why I am asking.

Anyway, Hello, I have a 99' GS-T currently running a stock exhaust and o2 housing. I want to upgrade to a Thermal CBE because I love the way it sounds. I have searched to see which downpipe I'd go with finally deciding to go with the Megan Racing V2 2.5" inlet (to accommodate for my stock o2 housing) and 3" outlet for better flow. But with my bad luck, as it just so happens that Megan Racing does not have the 3" outlet downpipes (I read somewhere here in the forums because they messed up their last batch that they made) so they have them with 2.75" outlet. Anyways I tried finding it from other vendors or here in the classifieds, but haven't found one.

So my question is what other downpipe could i go with for my Thermal CBE?

I thought of going with a Punishment Racing full 3" downpipe, but I feel like I'd get a lot of boost creep and I know because i have read it on here that I will have fitment issues because I have a stock o2 housing :(... I also searched on eBay and found an OBX brand 3" downpipe, anybody have any first hand experience with these or the CX Racing 3" downpipe also sold on eBay? Any fitment issues?

Thank you.

ps. sorry of the long post.
 
Utz, I have a 98 gsx
Pr o2 housing, 3" awd pr dp, thermal cbe
The problem was with the dp itself. Pr doesn't make them they just resell them. Fitment with everything else was spot on. Simple trip to the exhaust shop correct everything. As far as o2 housing being expensive, you have to pay to play. Don't cheap out and buy a no name ebay junk, only to have to buy a high quality once it cracks.
 
Utz, I have a 98 gsx
Pr o2 housing, 3" awd pr dp, thermal cbe
The problem was with the dp itself. Pr doesn't make them they just resell them. Fitment with everything else was spot on. Simple trip to the exhaust shop correct everything. As far as o2 housing being expensive, you have to pay to play. Don't cheap out and buy a no name ebay junk, only to have to buy a high quality once it cracks.
I got confused by your username i suppose thinking you also had a gst.

Utz, sorry. I never expected that.

its ok, thank you for trying to help :thumb:
 
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Guys, any decent muffler shop can make anything you want. Cut, weld, reposition flanges, even an entire new downpipe to your exact specs and fitment. Also many shops will have the parts in stock to do it the same day for a fraction of the cost of a name brand.
I modify my crappy eBay o2 housing at work with a 3" flange and reposition my o2 sensor in about 20 min.
 
Guys, any decent muffler shop can make anything you want. Cut, weld, reposition flanges, even an entire new downpipe to your exact specs and fitment. Also many shops will have the parts in stock to do it the same day for a fraction of the cost of a name brand.
I modify my crappy eBay o2 housing at work with a 3" flange and reposition my o2 sensor in about 20 min.

The more I read on here the more I feel this may be a better option LOL

Utz- Oh yes, sorry about that. I actually have a gst spyder as well. But this setup is on my gsx.

Np, I miss having two DSMs sometimes LOL
 
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