I wanted to know if anybody has a video or ever seen one that you can hear a straight pipe gt-four? (De-cated oem) Stock or aftermarket exhaust, it doesn't matter it's just to give me an idea. I can't seem to find a video..
I could go this way though Idk how it would sound and I don't want it to be too loud.

This post has been edited by dudeofchaos: Apr 4, 2012 - 12:04 AM

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Please describe how one would have a stock straight pipe exhaust.

i had mine as a 3" open down pipe, was god awful loud, then went to a 3" dump before the rear sub frame.... was even fawking louder, quiet annoying on interstate

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What I meant is de-cated stock exhaust.

straight pipe refers to the straight pipe put in place of a cat convertor unit on a regular NA celica, or other cars. on a GT4 the cat convertor is part of the downpipe off the turbo. Btw I thought you already had a 3" downpipe?

Anyways the question you're really asking is how different does it sound having a 3" downpipe as opposed to the standard downpipe and I can tell you this,

Stock downpipe with cat smashed out = not so much difference

Going from stock downpipe to 3" aftermarket downpipe (complimented with a full 3" exhaust system) the difference is great, the engine is more throaty, and you hear alot more engine sounds, you also hear the difference between wastegate open&closed.

No cell phone can really do the 3s-gte justice, but here is the best run i recorded back when i had a relatively stock 3sgte with just intake and 3" downpipe and full 3" exhaust, this was with 2 oem style oval mufflers so very quiet for a 3sgte (comparatively, but yeah alot louder than what it was with stock downpipe)

http://www.youtube.com/watch?v=vJyfBDeN2lI

This is what it sounded like after custom manifold, garrett turbo, full 3" exhaust and one of those oval mufflers replaced for a resonator

http://youtu.be/jQqpEjmYvKQ

Straight pipe exhaust actually refers to having no cat, no resonator, no muffler. The equivalent of running open header(s) or downpipe with just a pipe extending it to the rear of the car.

Just google straight pipe exhaust and you'll see this is correct.

My st205 has a 3" DP (Berk), 3" mid-pipe with 100 cell magnaflow cat, and 3" kakimoto exhaust (exhaust tip is around 700mm I think...very big).

I don't have sound clips but I can tell you that it's loud as hell.

I set off this one guy's car alarm in my parking garage every time I start it up. Not revving it, just cold idle.

I also have a tendency to set off car alarms of people parked on the side of the street if I give it more than about 50% throttle.

Exhaust pops quite nicely when off and then back on throttle.

Very throaty sound. I like it, but it gets a bit old after a while when you just want to go from A to B.

The difference in (apparent) power is definitely there. The turbo spools so much faster than with the stock dp/cat/exhaust.

I do not have boost creep issues.



Edit: There is a russian video on youtube that lets you hear the exhaust from an st205 (kakimoto)....just search kakimoto st205.

This post has been edited by texasnick: Apr 4, 2012 - 1:26 PM

I didn't know the cat was part of the down pipe. But what I really wanted to know was how it would sound with no cat, no res, no nothing but a 3'' muffler.