Crazy Question

[spiderman3k]

Has anyone tried to install a turbo exhaust on a non-turbo? I was looking at the exhaust system and I am trying find the differences. Please discuss your knowledge or experience. Thanks....

[Piddy]

Most likely will be too free flowing and hurt whatever performance you currently have.

[JekylandHyde]

You can install the turbo exhaust and gain some HP; however, you need the everything from the bottom of the cat back.

So you need what is caleld the "b-pipe" and also the muffler along with it's piping.

It will bolt directly up.

[spiderman3k]

thanks for the info JekylandHyde

[Pineapple]

You'll lose too much lowend on NA car with turbo exhaust. Unless the pipe size is just 1/4" bigger.

[DSR]

you are interested in the turbo exhaust because it is wider or what? the turbo exhaust is going to have a down pipe... and then you want it to connect to the catback or what? sorry, kind of confused

[spiderman3k]

DSR,
I was interested in the turbo exhaust because I cannot find an exhaust for the non-turbo. So I was wondering if anyone ever tried to put an turbo exhaust on a non-turbo MR2....

[JekylandHyde]

The OEM turbo exhaust does NOT have a downpipe.

The Turbos have a primary cat that hangs off the turbocharger.
The NAs have a primary cat that hangs off of the manifold.
BOTH cats, hang in the same location.

BOTH cats lead into a B-pipe.
BOTH B-pipes lead into the Muffler section.
The B-pipes are slightly different in length, so you HAVE to have the turbo b-pipe with the turbo muffler section and vice-versa.

BOTH set ups use the SAME mounting points and bolt to the primary cat at the same location.

You will not lose any noticeable low end going to the turbo set up.

[MitchB]

Originally posted by JekylandHyde
The B-pipes are slightly different in length, so you HAVE to have the turbo b-pipe with the turbo muffler section and vice-versa.

UNLESS You:

1. Cut the Turbo muffler pipe about 4" behind the flange (way before the U-bend).

2. Go to the muffler shop, get 9" of pipe that fits inside the stock pipe and two clamps.

3. Extend the Turbo muffler inlet by the difference between the Turbo and the N/A mufflers. (The Turbo B-pipe has a secondary cat, mounted in front of the muffler, hence the difference in length.)

4. Bolt it together, clamp it together. Total cost, about ten bucks.


Note- the B-pipe to muffler bracket won't line up. In almost three years of running that setup, I never had a problem with the exhaust system rigidity.

BTW, I've been running the Turbo muffler on my V6 with headers and no cat. It is SO open that it backfires slightly when cold, and it's an OBDII motor.

[JekylandHyde]

If you are going to be stuffing pipes inside the turbo pipes (reducing the size of the inside diameter), what exactly is the purpose of going to the bigger diameter pipe?

[MitchB]

Oh yeah, that 1/8" total is really going to kill it.

It's not only the pipe diameter that's different about the muffler, Turbo vs. N/A, it's the internal baffling that absolutely must be different. If you haven't heard it, you need to. I got a LOT of compliments on how my 5SFE N/A sounded.

[Piddy]

^ Who are you? You have no me/mine/mods.... and no info. I demand to know

[MitchB]

Mods? Does a V6 count?

I have the seventh "known" V6 MR2 in the US. As far as mods, it "only" has headers, no cat, a Fidanza flywheel. About 215 HP, maybe 220 TQ (at the crank).

[Piddy]

Rules.... http://www.toyotanation.com/forum/t4472.html


I dunno.... v6 isn't really a mod ... hah.

[MitchB]

Originally posted by ishcoleobo
I dunno.... v6 isn't really a mod ... hah.

Yeah, it is almost a stock motor.

After all, when you put in a brand new motor (zero miles), brand new LSD tranny, and brand new axles, who cares if your intake isn't stock? So, guess it's pretty much bolt-in mods.