2.5" gains over 2.25" with turbo?
yea, and the RRM kit has their own downpipe which connects to the regular downpipe which connects to the cat etc etc, lol its a little confusing, when i get my car back from the shop ill take pics of my exhaust system
That's the strangest thing I've heard in a while in regards to cars.

Stealin' a little bandwidth from David and Tym, but here's the pic.

I'll take some of Rob and Gabe's to make up for it.
...What a peculiar thing.

Stealin' a little bandwidth from David and Tym, but here's the pic.

I'll take some of Rob and Gabe's to make up for it.

...What a peculiar thing.
Last edited by HobieKopek; Feb 25, 2004 at 04:17 PM.
lol, it has to, its on my car, hehe
andrew.. see the first wrapped pipe, its the obviousy turbo downpipe, the end facing you in the pic, thats the end which connects to the downpipe
andrew.. see the first wrapped pipe, its the obviousy turbo downpipe, the end facing you in the pic, thats the end which connects to the downpipe
lol yea i know what you mean, it seems weird bc of all the pipes, but you know what, the a turbo charged lancer is weird thing period, so whatever works, and hey, a straight 2.5" midsection downpipe right after my turbo exhaust, talk about free flowing
pgmike when i had the turbo on the car it wasn't ricey sounding nor loud but when the wastegate opens up it screams so if you want it quiet have the wastegate run into the exhaust, and run no cat then if it is still to loud get a highflow cat.everyday i drive my car without my turbo on it i just want to find the biggest cliff and put my car out of its painful life.it sucks being slow again.
im more confused now. so after the turbo piping i would hook up the hiflocat/test pipe? and then comes the catback system?
edit: maybe a little sketch of the exhaust system with the turbo could help me understand a little better?
edit: maybe a little sketch of the exhaust system with the turbo could help me understand a little better?
Last edited by pgmike; Feb 26, 2004 at 12:24 PM.
Dont mean to bring back an old thread, but I am doing some research on this specific topic. I'm going Stage 2 RRM (picking it up next week), and was looking into the compatibility of the Buschur d/p and exhuast with the RRM turbo kit. If the RRM kit comes with a d/p what size diameter is it?
well, if you are talking about the turbo downpipe, i do not know dimensions but that comes with the kit, the exhaust downpipe from buschur will fit (this is a completely different pipe from the turbo downpipe), make sure you use new exhaust gaskets (2.5") just to be sure
Thanks for the reply. So does the downpipe connect directly to the turbo itself, or another manifold? I'm trying to see how a 2.5" manifold connection will fit a smaller one? Know what I mean?
well the buschur dp will connect to the turbo downpipe, it will fit, the inner piping isn't the worry, the flanges that bolt up to other flanges are going to be very close to the same size
Originally Posted by pgmike
edit: maybe a little sketch of the exhaust system with the turbo could help me understand a little better?
Stock exhaust manifold
Stock cat #1 (part of stock manifold)
Up-pipe (comes with kit)
Turbo (comes with kit)
Downpipe (comes with kit)
Stock cat #2
Stock Mid-pipe with resonator
Stock Axle-back
You can replace cat #2 with either a high flow cat, or a test-pipe.
You can replace the mid-pipe, and axle-back with a cat-back exhaust system.
From what the guys have said above, using a test pipe will be a little louder than a high-flow, but I would go high-flow just to protect the environment a little bit. They are very similar in hp/tq gains, so go with whichever you would like. Go with a 2.25" if you don't feel like you will be upping the boost in the future. If you are going to upgrade to push more boost, go with the 2.5".
Hopefully that sums things up for you, and I got all my information correct.



