possibly buying a buddy and exhaust for christmas. i have an xB but i need and exhaust for a tC. which company has "the best" exhaust. i am talking all out HP gains. i like how the sp2 sounds but it is not good enough HP wise... superstreet and modified mag show hp dynos for a couple exhausts... anyone got dyno proof for any?

 

I second that - i havent seen anybody that has just done the exhausts to show their hp gain/loss. if anybody does have some please share.

 

GSC did a dyno of axle backs...its in a sticky at the top of power hungry...look at that. they also did intakes and headers.

 

If you're gonna do exhaust, go all out. You won't see enough just doing axleback, mid pipe, s-pipe, or header. You need it all. You'd see probably around 20hp from a FULL exhaust....I'm talking header (MMW would probably show better than 20), s-pipe, mid pipe with resonator, and muffler, and NO CATS. That's how you will make power and get the sound you want.

 

i dont think that exhaust can possibly give you 20 hp. super street and modified did intake (cold air) header and exhaust. they only seen like 15-20 total with all three. both companies also said that the header was the best. that is pretty obvious since it contains the cat

 

^ I agree

 

I believe all tests were done with axlebacks.

 

What's their definition of exhaust?? Axle back? Cat back? Header back? Personally I come from a world that defines exhaust as a COMPLETE mod. Like if someone comes up to you and says they have Intake and exhaust done....but only have a muffler swap, I'd laugh cause that didn't do squat for performance. Obviously those companies still had the second cat. on there, meaning mid-pipe was still intact, and probably s-pipe still intact. 20hp is definately possible with a FULL EXHUAST, not just a few pieces here and there.

BTW, gotta love florida....no one gives a rat's @$$ if you have cats. or not, lol

 

yea actually it was axel back. by exhaust i ment cat (or header) back couldnt possibly give you 20 HP. intake header and full cat/header back would give you high gains, but i would bet that all three would not give much more than 20. there is no way that just a header/catback could give 20 HP. never seen it. any replys to prove me wrong, please include dyno charts.

 

i ment header or cat back. not including a header

 

https://www.scionlife.com/forums/vie...orworks+header

Summary of that thread.....the MMW header made 16whp by itself on the car that ALREADY had zpi exhaust and intake. I'm not sure if they showed total numbers of what everything combined made over stock. 20hp is possible from the tC....why? Very restrictive manifold and s-pipe stock, 2 cats., small diameter stock piping, and big/restrictive muffler. 20hp may not be possible on any vehicle with just exhaust, because some vehicles do come with much less restrictive exhausts. Open up the bottle-necks on the tC and you might be surprised the power it can make.

 

20whp is possible - that is why I am going to be doing that work first. .....20 is around the max that can be added 18-22whp if everything gets redone ...including the air comming into the engine all the way to the air going out, meaning: intake, header, midpipe, spipe, catback. I do not know this for a fact but if someone has all of that work done you are looking at a 164whp'ish car before the supercharger. Once the supercharger is added you are looking around an easy 210whp before any mods are done to the supercharger. The pully upgrade will bring you to 228whp. When the intake comes out for the supercharger that should give another 5-15whp (which I dont know cause nobody is talking about what is being developed). If someone wants to keep their car within warranty then they can change the intake on their supercharger and put out prob about 8hp less then the pully upgrade....but its still going to help. remember, a 220whp car is about 240 bragging hp.

With the whole intake/exhaust done and the supercharger you are looking at around another 68whp. Add that to a car that only has 143ish whp. Thats like adding 50% more power to your stock car. I honestly think my car is quick off the line and many people also think so.

 

i know that cold air and full header included back exhaust could do it. i am talking just stock exhaust manifold and catback exhaust can not do 20 hp. the cats are where the restricion is... if there was no cats and 1.5" pipe all the way back it would probably be better. eliminating the cats is the best way to free up HP. thats why i have a tubular, equal length turbo header and 3'' DP on my 3sgte swapped celica with 3" inside dia pipe bent back to 2 2.5" pipes comming to the dual tips... no cats no res no muf. just pipe. you would think that a turbo car would be quieter... there is a camero turbo kit that eliminates the muffler totally.

 

i agree tho, add the supercharger kit! along with all the goodies... most people go with the TRD kit i am asuming? why not a turbo kit? turbos seem to be better for the 4bangers... look at sub and mitz... no one puts a stock supercharger unless they are retarded... Cough Cough Chevy/Saturn