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Just wondering, what kind of exhaust would be best with SF turbo kit ?
I dont feel like spending a lot or money on something expensive, because that hp from cat back wont be that noticable, plus, with turbo in car, exhaust db will go down a lot.
I was thinking about getting an axle back and then doing custom piping, but shops that do custom piping around here suck big time, they dont do good job on welding the pipes, i mean i've seen few examples, and exhaust gases are barely passing thru the pipes bcs of bad welding and setup. Its much nice with stainless steel, full cat back. So back to the bang for the buck cat back, with turbo on the car. Any suggestions ?

P.S. yes i know, tanabe is proven, etc, but...550$, and in the end i wont even have that sweet sound of tanabe, it will be silecend by turbo...I'm looking for something that works well with turbo, and it will be fairly loud, deep type of stuff (between 98-101 db at idle) ???

 
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A catback will produce noticeable gains on a turbo system. I'm using the HP Racing JSpec Cat-back. The quality is great. I just have the axle back on, because I have an LX and I'm waiting for the turbo to convert. There are other users that have the HP Racing catback and said they felt some good gains on it. Plus, it's not that expensive, comes with mandrel bent SS, and a built in resonator. I've heard that the system itself (without a turbo) is nice and deep, and is somewhat loud when you rev down. But they said that they have gotten nothing but comments. I'll have sound clips of it with the turbo and Random Tech Hi-Flow cat the second week in June, but it probably won't do you any good then. But, it really is awesome quality for a good price.

It'll probably be quiet though, because it's got the Turbo and the resonator. But then again, I don't want a loud exhaust... I need to leave room for the BOV sound

EDIT: You could just go with a straight pipe and an axle-back, but I don't think that will even be the way you want it. It would probably make noise, but I'm not too sure if it would be that deep. Especially at those decibles. Those seem really high for idle.

 
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I dont think I'll have turbo untill late July - early Aug.
I will be putting Venom NOS kit at the same time, to spool the turbo quicker. Funny, I cant afford a lunch at work, but I can afford a turbo and nos...
talk about sacrafice hahaa

Thanx for the info on HP !

 
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your gonna run nitrous WITH a turbo? hope you got some strong internals bro.

 
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Yeah I will, it spools up turbo quicker, and nothing wakes up VTEC better then spooled up turbo Of course with that much stress on engine, along with 9psi of boost and 75 shot of nos, internals will be reinforced, one way or another he he he

 
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What kind of turbo do u plan on running 2 need no2 spool it? Most DRAG turbo's which are usually hybrid garret huge ****ing things need no2, but a turbo for a 7gen will not need any spooling help because it will be a small turbo. probbaly like a 5/6/7cm wheel based turbo.(for people who dont kno here is a example. Tdo5h 14b Mistu turbo is a 5/6cm and the 16g turbo is a 7cm wheel)

As for Exhaust. I suggest whatever kind of headers u want, with a 2"- 2.5"downpipe NOTHING BIGGER, with a 2"-2.5" Catback with a Straight Pipe. All Mandrel bent.

You ask why not 3" downpipe? Simple- Ever heard of Boost Creep?

 
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what about just doing a turn down after the cat? The turbo and cat act like mufflers, should not be too loud, and it will be awfully cheap/light weight-

I am considering this, unless i can find a nice exh. shop to make a header back setup 2.5", less the cat, through an ultraflow or somthing. If not, i may just chop after the cat...

 
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Greddy EVO Catback here....great system

Brandon

 
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i have a dc sports tcs exahaust and im wondering will this effect th eperformance since its not strait through, is it more restrivtive than a turbo exahust or even other catback, i love the sound but i want as much power as possible when i get the sf turbo kit

 
Rep Power: 607

Most ppl don't use N2O to help spool up the turbo, it is mainly used to cool the intake charge. All u really need is a 35 shot. And if u plan on building ur motor, u will get better gains if u use a 35 shot and turning up the boost than using a 75 shot.

 
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Don't get the Venom kit....it is a waste of money for what it is worth. Stick with ZEX or NX and use the extra money to buy a VAFC II.

 
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Not true there are many people that use nitrous to prespool their turbos but not for our cars. Drag cars with large turbos use the nitrous to both cool intake charge as well as setup a no lag system on there car so that they don't have to rely on only retarding timing and torching their turbo at the line.

 
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i know this.....we are not talking about a drag car here.....we are talking about a streetable civic.

 
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good choice, i have one too,

by the time u upgrade internals to withstand boost plus a 75 shot, u better have the boost damn near 20, just bc u add nitrous that doesnt make the vtec magically kick in better, its going to kick in at the same time as its set, so unless u move it its going to come on where its set stock, as far as sound is concerned, if u have a external wastegate and a open dumptube, u just lost ur low db exhaust, yea ur exhaust will still sound low with a resonator at idle and easy driving bc mine is real low in those areas, but once u press the gas and the wastegate starts opening and closing, it will be loud.

 
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what is a resonator and wut does it do? also, wut is a good exhaust for a 2003 LX with the sf turbo and 3 inch piping upgrade? where can i get this exhaust?

 
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You do not need the 3" downpipe upgrade unless ur motor is going to be built and u will be pushing around 300 hp. Plus u will need to have an exhaust shop do custom piping to the cat. Just stick with the 2 1/2 downpipe.

 
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oh great, so i dropped $550 on my tanabe and i'm gonna lose the sound? anyone with a turbo and tanabe exhaust? about how much quieter is it gonna be, like "stock" quiet?...not that its a bad thing since i'll be boosted and be listening to "psssssshhhhh" for now on

 
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I have an HP catback right now. HP rear section (sounded awesome, very low tone). I added a toucan midesction (2.5" mandrel bent from the cat back, and replaces the resonator. Took the sound of my rear section and multiplied it by 10! Sooo loud it was hard to hear my system on the highway. Once I installed the turbo, it sounded more like the rear section alone, but much much cleaner. Turbo exhausts all sound good. I think because of the diamete of my pipes (2.5") vs the money I spent makes this one of the best exhaust choices out there. $115 for the midsection off optauto.com, and the rear section for $202 off of Nopi.

 
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I just caved and dropped some $$, but still kept it on the cheap- Got a used HKSa cat pipe $100 (goes from header to where catback begins, putting a resonator where the cat goes), and a magnaflow cat back $275, and O2 sims $25-
- i hope to get it all in this week end, bc the SF kit goes in this 28th =)
(this was an expensive month, turbo kit + exhaust + Rim/tire + springs). Top Ramen for the next 6 months...

 
Rep Power: 584

u dont want to know what my downpipe cost, it was hella expensive, mainly bc of the complete fabrication and the 304 stainless it was mad out of. 625, then the greddy vo was 550, then that had to be cut and extended bc they didnt fit up, it was for the 03 SI, which is why it didnt fit, it also has flexpipe to look like a cat, and it has the two O2 bungs and an optional EGT tap, i dont have one of those so i didnt get that

 
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so is the dc tcs exhaust as restrictive on a turbo setup as stock?

 
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i dont know about all those twists at the end??? maybe

 
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Quick Tech?
I hooked up an O2 Sim, and wanna put on my hksa catless pipe, so what do i do with the second O2 sensor. Zip tie it to the engine somewhere? disconnect it and pull it from the car? is it reading anyting other than O2 (which is bypassed)?

thanks.

 
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Yes, the more straight the exhaust is, the better the turbo will perform. I have the TCS. Its a good system. I want to get the tanabe ultra or whatever when it comes out, or a turbo muffler and custom piping for the mid section. Actually, I dont know what I want to do right now.

The TCS is not that restrictive on a stock system. I find that it is a great system for the civic.

 
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ya for a stock i love it, best sounding exhaust imo, but when i turbo since exhaust can give 20 hp i dont want something as restrictive as stock which i assumed the tcs would be since it bends so much, but its popular and not hard to sell lol