wouldn't there be a loss of a lot of back pressure with mods such as y-pipe, r/t cat, b-pipe, and a larger muffler?

 

Yes, with all those mods, a HUGE LOSS.

 

so there is no way to make it up unless i lose everything...cause right now i have cai, y-pipe, and stillen exhaust...i wanna add the stillen b-pipe...would that be too much of a loss?

 

wouldn't the 2k maxima muffler give you back some back pressure..? at least on the low end when the valve or whatever is closed.

 

well you've already opened it up most of the way, you won;t notice much more of a loss with just a b-pipe, i thought you meant from stock to a full exhaust.

 

I have the Stillen intake, y-pipe, RT Cat, Courtesy B-pipe, and 5th gen muffler. I noticed a increase throughout the entire RPM range. I just want a dyno-run to assure me. I knew most of the mods would kill my low-end and I rarely rev past the 3.5K, so I thought I should keep the back pressure on the low end.

 

maybe i should stick my oem muffler on or a 2000 muffler

 

the muffler is the littlest part of all the loss of back-pressure. it's mostly in the y-pipe and b-pipe. and there is lots in the cat, but you need to gut it to get rid of that. you can get a 4" cat and there is stil that honeycomb in there.