Take a piece of paper and trace the flange onto the paper. Bring that in.

 

ugh. Pepboys, autozone, kragen, absolutely no help, no gasket. ANywhere else I can try? (I'll probably just use the stock gasket)

 

A dealership?

 

any exhaust shop in the entire world..maybe?

 

Problems taken care of, axlebackback is on the car. And it's sexy.

 

Good to hear!

 

Well, I was gonna wait on exhaust stuff, but my motor mount's slow in the mail so I went to Pep Boys today and got a magnaflow muffler, PN-11235 2.25" no frills, for about $70. Had it put in at Midas, another $70 with just a factory-esque 2.25" stainless tip, and at present no piping upsizing at all due to lack of funds. Nonetheless, I'm really impressed with the sound. My mods that affect engine sound are simply a cheapo cone filter with the autozone adapter and factory(for a Ralliart) airscoop. Before the muffler, the car sounded stock until the gas pedal was around 75% to the floor or more. Now even at idle you can hear a fairly deep tone(though it's quiet due to the stock piping) and it gets louder during acceleration.

I'd definately suggest this muffler to a Lancer driver who doesn't want a ricer sound. No farting, deeper tone than any comparable local import cars I've heard, and seems to be no bigger or heavier than the stock muffler. A few paychecks down the road will probably have a full 2.25" exhaust on my car, and likely a Kamikaze header, since it'll probably be ages before the car's paid off and I'm willing to try to save for a turbo, lol.

 

This has solved my 'What the f' with the double-cat on my 1.6 Lancer. Thanks.

+1 internets

 

you can clean your cats with soap and hot water!

 

Hey, so, this is going to be a weird question, just to get that out of the way. My car passes inspection with racing headers because I have a catalytic converter on it and the computer doesn't throw a code. That's all that my state requires. The cat has just been relocated a little bit downstream.

Anyway, the gist of my question is this: What might I look to expect from a gradual increase in exhaust pipe diameter? Right now, I have 2" I.D. piping from the collector on my headers, and the converter has a 2" opening and outlet. I also have a 2" baffle tube, that I am thinking of opening to a 2.25" outlet to mate to a single-chamber muffler, and have that fed out to a 2.25" or 2.5" pipe that leads into a 3" opening on a Magnaflow HF cat into an exhaust tip. This might sound confusing, maybe even crazy and stupid, too, but it is a setup comprised of parts that I happen to just have laying around and am really curious about using like this. I am mostly curious about the sound characteristics. It is an otherwise stock 4G94, but the pipe that exists now is a 2.25" with a Ford Fiesta resonator (Perfect sound once you hit the powerband, by the way!) and I have a lot of lag time with it, but my top-end is pretty bleh, too. The Magnaflow HF cat is bolted up to the headers, which creates a serious jump in overall pipe size, right off the bat, and the smaller catalytic converter gives me better power all the way through. Would a continual, gradual stepping-up in pipe diameter negatively affect the power benefits of the smaller converter, or is this something that will just have to be done in order to find out?

Thanks, guys! Sorry to revive what looks like a dead thread!

 

You will gain nothing. Your car made 120 hp brand new. The difference between exhaust setups in negligible.

 

Yeah, but let's say I start building the engine a little bit, to get it up to 150 HP and tune. What would the flow characteristics of the larger diameter pipe after the cat do, or would it do anything at all?

 

You won' get to 150 HP unless you turbocharge it. The engine is practically maxed out from the factory. You're overanalyzing the hell out of this when your gains will be less than 1 hp.

 

I actually have a K03 turbocharger laying around from another project and plan to turbo when I get the rest of the parts together. I've been researching this engine since I got the car two years ago, and I know that it's pushing the limit on the power, stroke, and bore for the 4G9x engine series. I was asking a question about how the flow changes in the pipe when the diameter changes slowly rather than quickly because I couldn't find an answer anywhere and I'm on the forums here. If there's no answer to be given, then that's the answer to sit with. If it won't make any difference, then that's the answer to give. If the note is raised or lowered by changing the pipe size like that, that is what I was aiming to get an answer on, whether that was entirely clear or not, my apologies. It's an economy engine with 2" O.D. piping from the factory. I know that going too big will lose on the little power that it already makes. Sound is my concern, but flow characteristics are what interest me on this. I have several other vehicles with much more powerful, larger engines and was wondering how the change in diameter might affect flow in general, not particular to the Lancer. I was tired when I posted and began to ramble. I know the stock engine is a piece of crap in terms of power.

 

You'll have to do it then and see how the sound changes. You're asking a very specific question about a subjective issue.