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Old 04-17-2005, 03:09 PM   #1
RS_to_WRX_swap
Scooby Specialist
 
Member#: 40337
Join Date: Jul 2003
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
95 L Coupe Swapped
99 Outback

Default I made me a custom mid pipe...

This weekend I tackled my first large project with my new welder. I changed the exhaust from behind the cats to before the axle/muffler. It sounds great, and there is a small increase in power between 2500 rpms all the way to redline. I made the mid pipe out of 2.25 aluminized steel, and used the factory hanger and flanges. At first I had a one resonator in place of the two factory resonators. But when we fired it up it was too quiet. Like the same as stock, so I took the pipe back off the car (for the thousandth time) and put in straight pipe. Now it sounds great and the best part of all.....NO RASP. Yup, I was worried that there would at least be a little rasp with out the resonator, but there is none. So my lesson to you is; if you are getting a custom exhaust made don't put in a resonator to start with. If you like it with out you can keep the cost, and weight down. If its too loud then you can always have one put in for cheap.

So some people might say, but RS_TO_WRX_SWAP; you always say to get 2.5 in piping, well I chickened out and got 2.25, and I regret it like none other. 2.25 is such a small increase from stock, when I measured with my calipers it made me realize how small of an upgrade it was.

So yeah I know ttiwop, but I ran out of paint half way though so it doesn’t look great. I might take pics and a video soon when we do the axle back. Which reminds me; IF YOU HAVE AN STI AXLE-BACK FOR SALE I WANT IT!!!
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Old 04-17-2005, 03:45 PM   #2
NicEJ25
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Member#: 26155
Join Date: Oct 2002
Chapter/Region: E. Canada
Location: Levis,qc,ca
Vehicle:
2008 WRX 5dr
Dark Grey

Default

2.25 is maybe a small increase from stock, but the fact is that the main restriction is before the mid-pipe and not after. 2.25 is enough to flow a stock or ligthly modified ej25. larger than that and you begin to loose the low-end that make this engine so fun to drive. Experiment your welding by replacing the 2 cats by a single Hi-flow one and you'll look like
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Old 04-18-2005, 02:18 AM   #3
RS_to_WRX_swap
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Member#: 40337
Join Date: Jul 2003
Chapter/Region: BAIC
Location: Bay Area
Vehicle:
95 L Coupe Swapped
99 Outback

Default

Quote:
Originally Posted by NicEJ25
Experiment your welding by replacing the 2 cats by a single Hi-flow one and you'll look like
I plan on doing that in the next month or so.
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