i'm thinking about going 2.5 inch custom exhaust!

Is that too big all i have is a SRI, and a muffler and a resinanator delete! NOW

And does anyone know where i can get a test pipe for 04 Lancer oZ??

This is my daily Driver by the way, and i was thinking about headers also!
What would be good headers to run a 2.5 exhaust

 

Headers - RPW is the best design.

Exhaust - 2.5" is fine.

Test pipe - don't know of anyone for an 04. But, um, dumb question - you're getting a CUSTOM catback. Have them just make it a foot longer and remove the cat as well. Then you'll have a CUSTOM test pipe as well. (Hint - I capitalized the word custom because the whole idea of getting custom is getting exactly what you want. )

 

i was thinking of the same thing but the thing is that what about the cel light?

if i custom make a test pipe do i just make a hole for teh cel thingy?

 

also how much are the RPW headers

 

480 for the header and 659 for the header and high flow cat.....

AccoladeSportParts.Com

you can also try the rpw website....

 

Hell yeah, straight pipe your lancer!! (FYI: Its going to sound like ricer SH_IT!)

 

i am the RICE bhahaha

 

2.5 is too big for an NA Lancer. You should stick with 2.25. I recommend that you get a Muffler and a Resonator in your custom exhaust or it will sound like ****. Once you get headers it'll sound even worse. If you want a testpipe, you can just tell the muffler shop to take out the cat and weld in a straight pipe. The o2 sensor is before the second cat so it will not give you a CEL.

 

I wouldn't recommend getting a test pipe until after you get headers. A lot of people say the combination is very loud and considering of the two only headers will actually give you any performance gains, I say stick with headers.

 

testpipe+2.5 exhaust+header= NO TQ.

don't bother with the testpipe. if you use it in combination with a header, you're gonna have no low end torque. Also stick with 2.25" exhaust. tried and true best diameter for a lancer

 

2.25 press bent or mandrel? I don't think i could ever find a shop to do madrel. I've read a million times that 2.5 press bent will flow like 2.25 mandrel. But I have no interest in loosing torque. i probably won't even do headers until I have IM, TB, and piggy back. maybe just stick with the axleback and consider it done for now?