i'm looking to put a good exhaust system on my 05 evo
i can't figure out in any research which one of theses A'PEXi's is better performance wise:
GT Spec Apexi-USA - GT Spec
N1 ExTi Apexi-USA - N1 ExTi
and about that N1 ExTi, it says it's lighter than the normal N1 basically, but is it better performing too?
..overall, i'd like an exhaust system that is the best performing, but has legal decibals (loudness)
arent there exhaust systems that have the muffler peice able to come off, so that you just have a straight pipe? cause that would be perfect
..sound doesn't matter too much to me as long as it sounds noticabley like an upgrade
help me out?
thanks ahead of time!
Last edited by yayapfool; 12-29-2009 at 10:48 PM.
Reason: title change
I'm pretty sure the Apexi exTi is just a lighter system. sound is up to you and loudness unless your looking for quiet to avoid some attention. All 3" exhaust get loud. start watching youtube clips of different exhausts and different setups if your main concern is sound. Performance wil come with supporting mods and having a overall goal for your car.
does your car have any mods right now? I would just get a 3" turboback exhaust and call it a day. The apexi N1s are quieter but i dont know about the gt spec. check youtube or find a person close to you that has the exhaust you want and ask to ride in it and hear it. I have a turboxs and mine is very loud, but i like it. I also like the HKS hi power and carbon TI.
if your looking for performance get a true 3" exhaust with the least amount of bends. I think the Jun B.L. is one of the straightest and is 3" all the way thru. Def make sure its a full 3" because you dont want to restrict yourself if you go big.
well both the GT Spec and Jun B.L. have one curve, like this
..................................
...................____-----_
_________/........-----..
................................
(ignore periods)
so the shape isn't a factor i guess
the GT has a 3.75 inch pipe, and i can't find what the Jun B.L. is, anyone?
oh and looking at pictures, it doesn't look like either of them come with down pipes, do they?
GT Spec: Apexi-USA - GT Spec
Jun B.L.: https://secure.buschurracing.com/cat...96b2738903bcfb
and 2 newby questions here:
what is the difference between a cat back and turbo back exhaust?
is it possible to just take off the muffler on your exhaust, making it a straight pipe? (i know they're illegal)
a tueboback exhaust is from the turbo all the way back and the catback will not include a test pipe and DP. Anyone confirm the apexi GT is a true 3.75" pipe if so i'm swithcing up. I know the jun B.L. has a bend they all have to in order to exit the bumperin the right spot.
it is only 85mm piping. it will equate to a 3" inner pipe. some models can be up to 95mm or 3.75" is what it states, once you look at your actual model it says the max is 85mm and i believe apexi may measure outter diameter not inner. and for %800 for a catback i would go with the jun.
but it says "The GT System is a FULLY polished stainless steel exhaust utilizing a massive 95mm* (3.74 inches) piping diameter channeled through..."
you're saying it's not actually?
..i scrolled down to the evo 8, and it does say up to 85mm
i'm confused, haha
Yes buy a TBE. It will include your downpipe, testpipe (if not, then a highflow cat), and your catback. Its honestly worth it to buy it now, instead of get all the parts individually.
I just researched the Apexi GT Spec exhaust. First, apparently the 95mm* is on "select" applications, so it doesnt necessarily mean that its coming on the Evo. Second, what I found for this exhaust on the Evo, is that the diameters range from 74mm-85mm. Im guessing because of the bends and such.
In my opinion, going with a bigger diameter exhaust would be something for having a bigger turbo. If youre still on stock turbo and plan on having the stock turbo for a while, then go with a 3 inch exhaust. Honestly, ive read and heard great things about the Apexi N1 and would go with that.
because it seems like the air in the injen one would be colder because it's from the fender/bumper area, while the K&N just has a heat sheild. but if the heat sheild works really well, and brings in the same temperature air, then it would be better right? cause it's also short, a cold air short ram intake mix kinda
....but then there's company, one product might just be better made, and gain more hp
No problem. Just so you know, the purpose for our intercoolers is to cool the air that is brought in through the intake. So, you might see a slight gain with the cold air intake instead of a normal intake. The gain wont be much though. I would honestly just buy a K&N filter, and use that with your stock intake pipe and MAF.
ohhh..hm, i never thought about that, it makes a lot of sense, haha
thanks!
...and what is the stock intercooler company? or is it just Mitsubishi, no name? haha, just wonderin
there is no real cold ait intake you can use for a 05 model because of the acd resevior. Also i would skip K&N and injen and get a ETS set up, its easy to tune and a solid piece. Cold air intakes are not needed on turbo cars since most are Intercooled, this cools the charged intake air down. The stock intercooler is great for stock boost levels and most boltons. if your doing drag passes over and over or pushing the car very hard it may heat soak quicker then some.
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bolt on performance upgrades
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haha
