Go to youtube, and listen to any exhaust you want... Just make sure it's 3" or bigger

 

what name brand exhausts come for s13's 3.5" or bigger? i would usually go ebay for exahusts but either i suck at searching or the biggest they come is 3" for ebay brands

 

buy a muffler u like
go to muffler shop and have them weld in whatever the size piping u want...done and done

 

Trust/Greddy made one which was 94mm, Also the HKs hi-power, not above 3.5" but bigger then 3" at 85mmm

 

For turbo charged applications, you really don't need to go above 3"'s. I'm having my custom made. It's cheaper than buying a full exhaust system i think. I'm only spending 300 on mine. Most start at around 500.

 

^When your app calls for it yes you do, and in addition less back pressure faster spool & more power...

 

well you should go with this one. it sounds great(none of that ricer shit) and it has a great weld quality.
3" Turbo Catback Exhaust Nissan 240SX 89-94 SR20det S13:eBay Motors (item 190298160484 end time Apr-11-09 18:34:45 PDT)

all you have to do is clock it (like 2") so it will mate up to youre test pipe or cat.(like 20 bucks at a welding shop)

 

3" is good for 700ish hp!

 

dude i want some 4 inch pipes now!!

 

Well if you can show me 2 different engines that put out the same CFM at the same HP then I'll believe that chart...

 

That graph is quoted from Maximum Boost by Corky Bell in relation to performance turbocharged engines. If you chose not to believe it then that's your choice. I'm inclined to agree that 3.5" exhaust is overkill for 90% of the people here.