oh and is it louder then the stock exhaust?

I had it custom made at a muffler shop in St. Clair, Missouri. Three inches for 3 bills!!! I got a HELL of a deal.

CUSTOM!!!!!

NNNOOOOOOOOOO!!!!!!!!!!!!!!!!!!!!!!!!!!



guess i have to keep hunting for exhaust

OH YEAH! it sounds like a real freakin race car. constantly turning heads...(most don't like it but they all like Hondas!) it sounds real good. deffinatly accomplished LOUD!!!!

Hey FlamingGuts, custom would probably be the cheapest rout. Just find a local shop.

86-88 cars used 2lbs of back pressure sourced at the main cat to open the actuators



89-92 used the emmisions air pump to create the pressure to open those same actuators

I've got 3" down-pipe, followed by a 3" high-flow catatlyc convertor, Y-piped into the Racing Beat mufflers that cut it down to about 2.5"...I think this is the best setup.



I'll tell you something. My brother on his SR'd 240, used to have no muffler, just a 3" down-pipe followed by a crush-bent 3" pipe. His vacuum read extremely high, 20 or so I believe. When he got a 90mm muffler added on, the vacuum dropped to 18, and this actually resulted in a quicker spooling of the turbo.



I believe that overall, back-pressure on a turbo is bad, yes, but, as long as that backpressure isn't too close to the turbo, you aren't causing any problems, and by creating a lower vacuum, I think it makes sense that it takes less "boost" to actually spool a turbo, thus explaining why my brother's car spooled faster.



My car, the vacuum is about 18 as well, but lately it's been way fucked up, cause of some vacuum leaks under the hood, but hopefully that'll be fixed in the next few days...

Back pressure on any engine is bad. On turbos, its worse. There is no exhaust tuning with a turbo after the turbo itself. You want it as free-flowing as possible. There are diminishing returns as the size goes up(you wouldnt see much, if any, gain from a 6" pipe over a 4" unless you were making 1000+ hp), buy generally bigger is better.

so because i have an 88, i can take my air pump off without loosing performance?

as long as i make the block off plate..

loud? i have a straight pipe single setup only 2.25" and its ridiculously loud. i cant even imagine how much louder it would be with a 3".