i'm installing a 2.5" exhaust on my gt soon (muffler and pipe in hand) but i had a couple questions for people who have run the same size. first, did you buy/make an adapter to bolt right up to the header, or just use a slip-on/clamped/welded reducer coupling?

second...can anybody post pics of their set-up? i'm not really interested in the kind of muffler you have or the way it sounds, i just want to see how other people have routed the pipe.

thanks!

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Dont know about your engine, what kind of gains you´ll be gettin', but on the 3S-GE it doesn´t actually make no difference at all, wether it starts from header or if its just a catback.

And yeah, route it like the original one? Then you should be able to use the original clamps.

Be sure to run a cat and resonator along with your piping so it doesn't sound ricey. I did this on my N/A Supra and that car purred.

-Matt

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Does the resonator make the sound lower? Or what, Im confused

judging by the responses/ lack of, i'm assuming no-one has made a bolt-up adapter.

my exhaust is broken and i need to fix it, i am planning to do a complete new exhaust in the next year or so, i just wanted to see what options were there.

for now, i'm going to run stock size back the the axle, and then 2.5" into a 2.5" magnaflow.

janky, yes. expensive, difficult, or time-consuming...no.

autocross season is upon us, and i've got to get legal.

thanks for the input.

Here's a few old pix of my exhaust setup. Sorry about the dirty under carriage.





What I did since my downpipe was originally cut (engine swap), I cut off about 2" of the celica's OEM downpipe that normally bolts down to the rear of the crossmember. Doing it this way still leaves me a 2" exhaust flange to the rear and original location of the O2 sensor on the downpipe like how it was before. Anyways, I had an exhaust shop weld the cut downpipes together with a 2" piece of piping (You can see it from the first pic). Now from the rear of the downpipe the exhaust shop welded a 2" exhaust flange with reducer on the front of the magnaflow cat converter and also a 2.5" exhaust flange on the rear of the cat converter and then bolted them accordingly (2nd pix). This way I can still unbolt the cat. converter from the exhaust whenever I want but most importantly so I can just unbolt the whole downpipe from the entire custom cat-back system instead of cutting and rewelding it all over again. Then from the rear of the cat. converter the exhaust shop did a 2.5" piping all the way to the rear muffler (over-axle including a 2.5" in/out magnaflow resonator in the mid-section of the piping (2nd and 3rd pix).

awesome netrata, thanks!

Hey elvasoshexai, could you please make a vid on how your exhaust sounds like. I'm actually thinking a similar setup with the 2.5" piping and going under-axle instead of what I have now.