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About LinkBacksI want to buy a 3 inch catback, and it has a 3 inch flange to hook up to the downpipe. i plan to get headers later on when i get the money... but for now does anyone sell a flange that gos from 2.5 inch to 3 inch so i could bolt up this catback? I want to keep the catbacks 3 inch flange, and have the downpipes 2.5 open up to a 3 inch exit.
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flanging from 2.5 inch downpipe to 3 inch exhaust?
This is a discussion on flanging from 2.5 inch downpipe to 3 inch exhaust? within the 3.8L V6 Supercharged (L67)(L32) forums, part of the Engine category; I want to buy a 3 inch catback, and it has a 3 inch flange to hook up to the ...
- 03-19-2009 #1GTP Level Member
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flanging from 2.5 inch downpipe to 3 inch exhaust? 2000 GP GTP Black 2 Door AEM Meth Injection (100% Meth), 3.25" pulley, N* TB, PRJ Wires, Smoothflow Idlers, 42# injectors, Racetronix fuel pump, ZZP Headers, 1.8 Roller Rockers, Custom CAI, NGK TR6 Plugs, 180* Tstat, Custom Tuning by TUNE TIME PERFORMANCE
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? The flanges are physically the same size, so they'll bolt up. One will just have a larger opening.
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- 03-19-2009 #3Get off my damn lawn!
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? why have a 3" exhaust? it is fairly useless.
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? just because its a zzp catback... and i love the way it sounds.. i know its really no big deal preformance wise
Originally Posted by Bio248 
2000 GP GTP Black 2 Door AEM Meth Injection (100% Meth), 3.25" pulley, N* TB, PRJ Wires, Smoothflow Idlers, 42# injectors, Racetronix fuel pump, ZZP Headers, 1.8 Roller Rockers, Custom CAI, NGK TR6 Plugs, 180* Tstat, Custom Tuning by TUNE TIME PERFORMANCE
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? hmm, just emailed zzp... they said it would not fit the stock downpipe
2000 GP GTP Black 2 Door AEM Meth Injection (100% Meth), 3.25" pulley, N* TB, PRJ Wires, Smoothflow Idlers, 42# injectors, Racetronix fuel pump, ZZP Headers, 1.8 Roller Rockers, Custom CAI, NGK TR6 Plugs, 180* Tstat, Custom Tuning by TUNE TIME PERFORMANCE
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? I have talked to ZZP personally about this situation for my friends car: Originally Posted by 2000GTP
They will, for an additional $20 weld a 2.5" to 3" adapter onto their catback for you so it'll bolt onto your 2.5" exit D/P. I have no opinion on the idea just thought I'd tell youIf they catch you in the back seat trying to pick her locks they're gonna send you back to mother in a cardboard box.
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? yea... only problem is sending them in my downpipe... my car is a daily driver :/ Originally Posted by a3gtp 2000 GP GTP Black 2 Door AEM Meth Injection (100% Meth), 3.25" pulley, N* TB, PRJ Wires, Smoothflow Idlers, 42# injectors, Racetronix fuel pump, ZZP Headers, 1.8 Roller Rockers, Custom CAI, NGK TR6 Plugs, 180* Tstat, Custom Tuning by TUNE TIME PERFORMANCE
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? take it to an exhaust shop for an estimate
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? yea, because the thing is im getting a sick deal i think. i might be buying one for 400 bucks plus shipping used for about 2000 miles. I could buy it new for like 750. im trying to figure out if i should do i can do this stuff or not before i go ahead and buy it becasue my plan originally was to get it when i got headers later on
2000 GP GTP Black 2 Door AEM Meth Injection (100% Meth), 3.25" pulley, N* TB, PRJ Wires, Smoothflow Idlers, 42# injectors, Racetronix fuel pump, ZZP Headers, 1.8 Roller Rockers, Custom CAI, NGK TR6 Plugs, 180* Tstat, Custom Tuning by TUNE TIME PERFORMANCE
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Re: flanging from 2.5 inch downpipe to 3 inch exhaust? I meant the reducer flange is welded onto the catback so it bolts onto your stock d/p Originally Posted by 2000GTP If they catch you in the back seat trying to pick her locks they're gonna send you back to mother in a cardboard box.
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