So, i was wondering if anyone had info on what type of power gain, if any, there was with going from a stock exhaust, to a 3"?
I have a catted Turbo-xs down-pipe and stock exhaust with muffler delete, and it sounds pretty good, but now that i'm tuned, i want to know im breathing properly for my power..
I hold 25psi till about 5700rpms and then I drop to about 23psi till 6200 redline just o give you an idea of what kinda tune i have.

I am planning to do a 3" muffler deleted set-up and possibly keeping the stock resonator.

 

i think i read that the gains are minimal minus sound, thats why i havent swapped mine out, im running a 3" catless DP and a stock cat back with muffler delete as well. the 5-10hp increase isnt really worth $500 to me right now

 

Yeah I've read gains are small.. I only got a 3in cuz of the deal I came across

 

Yeah, if you go on MODERN PERFORMANCE website, their MPX 3" is supposedly dynoed @ 12whp!!!
If thats the case, then any 3" is gonna have the same power because it is the same design for every company...

Plus, I was just gonna have my local exhaust shop make it, rather than waste $4-600...
$120 with an upgraded tip, $100 without...

 

Just get it, get the gain and the sound. It comes as a package. I like it better than the stock. Especially at idle....its quieter than the stock with a 3" downpipe.

 

3" straight is the way to go! Lol.

 

haha..I have a muffler delete right now on the stock system, and it gurgles pretty good, but at wot, it sounds a little choked...
Anyone have a video without the stock resonator on? I may just rip that off too since my down-pipe is catted...lol

 

I could make a video of 3" straight bit that's it. I bet a 2.5" straight will sound similar just a bit quieter. You'd het some of that turbo noise thru the exhaust too.

 

I think that was the gains with their catless downpipe as well

 

doooooo it...lol

 

Lol. Ill make a video tonight.

 

Turbo XS says their catback gains 10-15 whp for the LNF

 

Here's a video of mine.. I have the resonator and muffler tho.. not straight piped

http://www.youtube.com/watch?v=sRE02...e_gdata_player

 

meh.. i'm still on the stock cat back and it works just fine

 

^^^^but you have a catless down-pipe, i have a catted one with the stock exhaust.

 

Catless DP, stock cat back with Magnaflow resonator (stock res and muffler were deleted by previous owner) and it seems to work just fine. I put down 362/376 last week.

 

so you have a straight pipe exhaust...lol

 

No cats, correct but the resonator ads a tiny bit of restriction but not nearly as bad as a cat.

 

I'm running a 3in catless dp and 3in catback w/o resonator w/ a magnaflow muffler sounds great with my 5857 turbo setup

 

so everyone seems to be in aggreeance with me getting a 3" with deleted muffler and resonator...Hopefully the sound is as good as what I have, and hopefully the 12whp average is correct too.

 

I am willing to bet the gains were compared from a stock car vs. a car with the exhaust and a tune. No way they got 12whp from JUST an exhaust on this car.

 

Dont do it! Sounds horrible and way too loud. I have a 3” with 2 race mufflers and a turbo at the end and its still sounds like ****. Im considering spending the money to go back to a 2.5” even if I do happen to lose a few horsepower. Who knows, I may even gain a few back.

 

you must not have a tc? they sound good with 3in exhaust.. i just posted a vid above and i think it sounds great.. deep sound.. no rasp

 

well, im sure there is some kind of catch, but my car is tuned with the normal bolt-ons, so it should go nicely.

 

I bet you won't even gain 5hp