89 gtu 13b w/ streetport. all stock. car is drifted on weekends driven daily on week days. what would be the best way to go with a custom exhaust? also the cheapest. single or dual? what size piping and should it be headers back cat eliminate any special bends for back pressure? any info would be appreciated! thanks

 

How much money are you willing to spend is the question? You should see if anyone is upgrading and purchase there leftovers. Even eBay is expensive for a full catback.. it's all on you.

 

i personally like the racing beat set up, but it's a little pricey

 

Yeah those are nice. My buddy has it on his GXL. If i had the money i would go with an HKS Hi power. Those sound lovely.

 

yea my friend has it on his car, i happen to be cheaper than him so i'm running a racing beat header to a cat to a single racing beat muffler, with custom piping between the cat and muffler. it actually sounds very good.

 

i was planning to just get a single muffler n1 style most likely. and do custom piping. now my question is wat size piping will be the best for performance? im going to stay n/a and with rotarys im told you need to have back pressure. also is it ok to delete the cat and just go straight pipe with a n/a?

 

with an s5 i believe the ports are opened electronically so you dont really need back pressure i think. i use a 2.5 inch for NA and it sounds and feels great, but a lot of people do 3 inch.

 

apex n1 dual is the most intoxicating sound ever

 

single muffler n1 style? your just gonna go eBay for $30 universal or wha? haha. Atleast get a decent muffler. Get an apexi ;D. Also, what exactly are you guys referring to when talking about 'custom' piping.. re routing or larger 3" piping or so? You want a nice sound for free just take off the cat. Hahah shyt sounds so nice but not too good.

 

mmm buzzy rotary ...MY FAVORITE

 

Yea i have a corksport single catback and its really loud but has a good tone, im lookin at gettin a racing beat dual exhaust, if your lookin at a corksport single let me know.

 

haha naa no ebay juss someones old hks or apexi or whatever muffler i can find for cheap. idk about the 3" im not turbo and i dont want it to sound rediculous. i was told that the fc's exhaust are very restrictive so im trying to figure out what exactly i can do to fix that! the cheapest way possible

 

i got a cat and a y pipe that goes to two mufflers and it was done by a guy i know in cali and it sounds great... he replaced the resignator with the cat

 

mazdatrix sells some mufflers and cats that last, move more air than OEM, and sound good. I Think the company is Bonez.

 

i might take it depending on your price. How much are you asking? PM me. Also, any pics?

 

go to www.mazdatrix.com - they have a good selection of mufflers that will last. From my research most rx7's will damage a cheap muffler very quickly. I spent 230 dollars on mine five years ago and it still sounds great and is free flow. It is designed specifically for the 85 gxlse I have. I think they have a tech page on mufflers also. Remember a super cheap free flow muffler may result in less low end power and maybe more highway power.

 

racing beat is the way to go.