2G Exhaust Suggestions

[NeedTalonNow]

Hi everyone, just hoping for some input from some of you more experienced guys. I am working on finishing maintenance and upkeep on my car before I begin some upgrades. After which I'm hoping you can recommend a full exhaust system for me. I need to keep a catalytic converter. Doesn't need to be stock, but I need to keep one. I'm hoping to go with a 3". I'm also hoping to do a fp turbo manifold, fp red turbo and punishment racing recirculated o2 housing pkg with tial mvs wastegate. Of course I will do the supporting mods like fuel first, etc. Will these parts work together? If so, can you recommend a full exhaust? I am probably aiming for 400-500hp. Thanks.

 

[JaysGSX]

I recently bought a 3" SR*S catback, and got a pretty good deal on it; it's even cheaper for a GS-T. I know a few Subaru owners that run an SR*S catback which is what made me look at them. I haven't put it on the car yet because I am waiting for my Punishment Racing downpipe to arrive, but others on this forum have run this catback and had no fitment issues. The welds on mine look really good, and the catback appears to be of high quality for coming from ebay. Here is a link to the one I bought -

http://www.ebay.com/itm/390282314855?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

I'm going to be running a recirculated tubular O2 housing, 3" Punishment Racing downpipe, 3" SR*S catback, and a Forced Performance manifold.

 

[NeedTalonNow]

I recently bought a 3" SR*S catback, and got a pretty good deal on it; it's even cheaper for a GS-T. I know a few Subaru owners that run an SR*S catback which is what made me look at them. I haven't put it on the car yet because I am waiting for my Punishment Racing downpipe to arrive, but others on this forum have run this catback and had no fitment issues. The welds on mine look really good, and the catback appears to be of high quality for coming from ebay. Here is a link to the one I bought -

http://www.ebay.com/itm/390282314855?_trksid=p2057872.m2749.l2649&ssPageName=STRK:MEBIDX:IT

I'm going to be running a recirculated tubular O2 housing, 3" Punishment Racing downpipe, 3" SR*S catback, and a Forced Performance manifold.

Thank you. I was actually just looking at that earlier today. Is the PR DP and the SRS catback going to eliminate the catalytic converter?

 

[JaysGSX]

Downpipes are what eliminate the cat, not a catback, and yes, the PR downpipe for a 2g eliminates the cat... most do on a 2g. However, that catback exhaust does come with a reducer that will allow you to bolt it up to the stock cat. If you would like pictures of the SR*S cat back while it is not on the car I can take some for you to show you the quality.

 

[ThunderChild]

Get an srs, whatever downpipe would retain a cat, and whatever high flow cat you want. Take car to shop with open dp, hand them cat, have the shop weld tubing and flanges/bungs in place and bolt the cat in. Could even have them make you a test pipe to take home and swap in/out as you please.

The rest of your choices seem ok. Recirculating the gate on that turbo prolly wouldn't be my choice, but if your not going full race it shouldn't matter too much.

FWIW, I got the 3" srs CB, some 3" stainless dp, a PR recirc o2 housing and made my own test pipe as well as swapped out the far can for a straight pipe tail section with 5" mbrp tip, and the car is very smooth and quiet at idle. Has a very linear growl to it w/o being obnoxious. With the muffler it would probably be a touch quieter with more throat to it.

Spent about 300 total for my exhaust from the turbo back including supplies.

 

[PlanZero]

I actually bought a cat back for $100 shipped and DP for $90 shipped from DNA on eBay and I can't believe how well it fit, sounds nasty, and the welds and mandrel bends are very decent quality. I eliminated the cat since my state (PA) doesn't do a visual cat inspection and a $5 O2 sensor spacer prevents a CEL.
On my other Tsi I have an old apexi ws2 cat back paired with a Megan DP with a hi flow cat welded in. Unfortunately a few winters and possibly a large speed bump cracked the weld and I had to get it redone.

 

[RyeDawg]

Megan racing also makes a shorter downpipe for a catalytic converter.

 

[NeedTalonNow]

Get an srs, whatever downpipe would retain a cat, and whatever high flow cat you want. Take car to shop with open dp, hand them cat, have the shop weld tubing and flanges/bungs in place and bolt the cat in. Could even have them make you a test pipe to take home and swap in/out as you please.

The rest of your choices seem ok. Recirculating the gate on that turbo prolly wouldn't be my choice, but if your not going full race it shouldn't matter too much.

FWIW, I got the 3" srs CB, some 3" stainless dp, a PR recirc o2 housing and made my own test pipe as well as swapped out the far can for a straight pipe tail section with 5" mbrp tip, and the car is very smooth and quiet at idle. Has a very linear growl to it w/o being obnoxious. With the muffler it would probably be a touch quieter with more throat to it.

Spent about 300 total for my exhaust from the turbo back including supplies.

Why would you not recirculate the gate on that turbo? And no, not a race car.

 

[JaysGSX]

Why would you not recirculate the gate on that turbo? And no, not a race car.

I'd like to know the same, please elaborate tametalon92. If you want a true 3" downpipe that does not neck down where it meets the O2 housing then you will save yourself a huge headache trying to install it and getting it to not leak by replacing your stock O2 housing. With that said, you can do a recirculated, or an open dump. If you like chatting with cops (or at least getting their attention) then go open dump. I personally do not care for the additional noise, so I went with a recirculated tubular SS O2 housing. When I bolt on my HT68A turbo it will help with boost creep. It's a win/win, and you can find them relatively cheap.

With that said, I don't see the downfall of running a recirculated O2 housing outside of the additional heat and they being pretty close to the alternator. I plan on wrapping my O2, manifold, and downpipe in DEI titanium exhaust wrap to keep the engine bay temps down.

As for downpipes, just be sure whatever one you go with has an outlet the same size as your cat. If you go 3", you will for sure need a high flow cat as it will not bolt up to the stock cat, and if it does, there will not be much of a mating surface between them.

 

[donniegst]

i have a stm exhaust and love it

 

[2gmitsueclipse]

OP;

Be aware that many 3in dowpipes are not designed to fit the OE o2 housing. You may have to wait on the downpipe until you install the aftermarket o2 housing.

 

[ThunderChild]

At that power level and turbo setup I'd prefer an atmosphere dump. The response would be better I feel. Also the aformentioned reasons of space and packaging. Besides, who doesn't love a nasty wastegate?

Past that, if you've got a properly sized internal gate that functions properly, creep shouldn't be a huge issue. U could always go o2 mounted external as well

 

[NeedTalonNow]

At that power level and turbo setup I'd prefer an atmosphere dump. The response would be better I feel. Also the aformentioned reasons of space and packaging. Besides, who doesn't love a nasty wastegate?

Past that, if you've got a properly sized internal gate that functions properly, creep shouldn't be a huge issue. U could always go o2 mounted external as well

Would probably do o2 external mounted.

 

[Rich94]

Thermal R&D exhaust all the way! I have one and i love it, nice deep/low sound.

 

[NeedTalonNow]

Thermal R&D exhaust all the way! I have one and i love it, nice deep/low sound.

I think im gonna go thermal with a high flow cat and a tanabe dp.

 

[chrysler kid]

I actually bought a cat back for $100 shipped and DP for $90 shipped from DNA on eBay and I can't believe how well it fit, sounds nasty, and the welds and mandrel bends are very decent quality. I eliminated the cat since my state (PA) doesn't do a visual cat inspection and a $5 O2 sensor spacer prevents a CEL.
On my other Tsi I have an old apexi ws2 cat back paired with a Megan DP with a hi flow cat welded in. Unfortunately a few winters and possibly a large speed bump cracked the weld and I had to get it redone.

You sure about that? Only black box 98-99 4g63 dsm's are immune to the sniffer test. Or do you drive around till all systems show ready

 

[Lazyboy]

STM new 2g exhaust looks sweet! You should get it!

 

[Drop Top Road Trip]

I bought a 3" SRS catback off Amazon and installed it. http://www.dsmtuners.com/threads/srs-3-catback-sounds-vs-stock-video.499607/ Did a before and after sound video. Sounds great, but then I found that I had a rusted out stock downpipe. I replaced the stock downpipe and cat with a Megan Racing 2.5" that I had shortened to meet up with the SRS midpipe which I had a 3" Random Technology high flow cat welded in. http://www.dsmtuners.com/threads/video-finally-finished-my-exhaust-tig-cutting-fabrication-porn.501110/

Oddly enough, except for the lack of exhaust leak (which was pretty minor), the sound doesn't seem to have changed for installing the DP and Hi Flow cat!

The O2 housing looked like it could be ported to match the downpipe and I might do that some day, otherwise everything matched up nicely. The SRS catback already had a 2.5" inlet that immediately expanded to 3".

 

[jimsgsx]

I have a hks hi power exhaust 3 inch full and it is nice. Sounds great. Not too loud like a honda chugging around going 20mph . Seriously though its a great exhaust, excellent craftsmanship as well. It isnt too loud, isnt too light. Gets loud when its supposed to.

 

[chrysler kid]

I had to take out the exhaust bracket where the pipe bends to go around the gas tank so that my 3 inch spec d tuning exhaust didn't point downward.

After I took out that bracket the exhaust lined up much better. No complaints however as others have mentioned I didn't really see much power increase, the best modification by far for a bolt on car is cx racing upper intercooler piping off of ebay

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[mitsumike0]

I would try STMs exhaust. It's stainless I believe as opposed to my apexi which will be rotted one of these years . Love my n1

 

[PlanZero]

Sure about what? The spacer or the lack of visual inspection? Never had a problem with either

 

[chrysler kid]

Sure about what? The spacer or the lack of visual inspection? Never had a problem with either

95-97 4g63 cars need to pass a the sniffer test unless you live in a rural county that does not require emissions testing. Regardless of visual or obd2 scan

Just to clarify, sniffer test is sticking a probe into the exhaust to measure emissions to ensure the car is emitting safe levels of exhaust gasses. 95-97 cars do not show in "ready" status in obd2 emissions scans and the computer prompts the state inspector to then begin the manual testing of exhaust emissions.



There's a few threads about it so by missing the sniffer reference you must live in a rural county where the car only needs to pass safety testing. So your advice is not very good to the rest of us


http://www.dsmtuners.com/threads/not-passing-smog-because-of-monitors.167675/

 

[WisconsinMonSTAR]

More people use the SRS exhaust than I thought! I bought my cat-back from a friend, not knowing what brand it was. I believe it is an SRS though. Whatever it is, it sounds great, and sits nicely. Some exhaust tips point at angles and don't sit centered. I like how this one fits like a factory aftermarket style exhaust. Looks and sounds perfect in my eyes. I also have an SRS downpipe which eliminated the cat. I have an o2 sensor elbow as well as the rear o2 codes deleted from my ecu via ecuflash. My car is also registered in a county that doesn't test for emissions.

I recommend SRS exhaust components.

 

[PlanZero]

95-97 4g63 cars need to pass a the sniffer test unless you live in a rural county that does not require emissions testing. Regardless of visual or obd2 scan

Just to clarify, sniffer test is sticking a probe into the exhaust to measure emissions to ensure the car is emitting safe levels of exhaust gasses. 95-97 cars do not show in "ready" status in obd2 emissions scans and the computer prompts the state inspector to then begin the manual testing of exhaust emissions.



There's a few threads about it so by missing the sniffer reference you must live in a rural county where the car only needs to pass safety testing. So your advice is not very good to the rest of us


http://www.dsmtuners.com/threads/not-passing-smog-because-of-monitors.167675/

Well that's how they might still do things in TX but good luck finding anyone who still does a sniffer in PA. In PA counties that require emissions testing 95+ all but two I/M monitors must read ready or it will not pass. As most of us know many 95-97 ecus have a hard time reaching the ready status because of the key off reset problem, hence the reason 96-97 Tsis are automatically exempt on the state emissions testing computer. I love it. However, according to the EPA my old 96 GST had to pass, but again two I/M monitors are allowed to read not ready, and since the cat was deleted that was one. The rear O2 spacer is commonly used with a cat delete to prevent a CEL. Unless your getting your inspections or emissions done by Satan, I've never even heard of anyone doing a visual examination for the cat.