How about this exhaust set up?

[KCz Eclipse]

Alright, i have a previous post on here asking what exhaust to buy for my 91 gsx. About half of the responses said to just buy the 3" srs off of ebay. So i have decided thats what i am going to do (I can always change the muffler). But the catback system is the easy part to buy. Here is what i have found

Dowpipe- PUNISHMENT RACING 3" DOWNPIPE FOR ECLIPSE/TALON - Punishment Racing

Cat- https://secure.buschurracing.com/cat...roducts_id=204

Catback- Ebay SRS

But i have a couple questions. The buschur catalytic converter says that it is a slip fit. It looks like the srs system and the downpipe are both set up for a bolt on cat. Is this going to be a problem, or should i find another cat. If i need to find another cat, what do you guys recommend. Let me know what you guys think.

Thanks

Oh, i forgot to ask, is going from the stock 2.25" downpipe to a 3" going to be a problem as well. Will i need to buy some sort of an adapter or something.

Come on. I need some input. Please & TY

[GRAVEDIGGER]

No, you don't want to go with a slip fit on that system. It will be more trouble than it's worth. Why exactly are you wanting to run a cat? Do you have e-check where you live? If not, I would just go with a test pipe like this 89-94 Eclipse Talon Exhaust GST Test Pipe 3" 1G , Bolt On Fit

[boost97gst]

No way you have emissions out in the sticks. I live in IL in a small town east of stl and we dont have them. If you dont, then go catless. Save the money and enjoy the sound and bump in power.

[pos4g63]

I would also go cat less 95 and older in st.louis don't need emissions. Unless you are worried about your carbon foot print.

[R91TsiAWD]

I actually just bought and received my PR 3" downpipe, and its a really nice piece and I think it's a great choice! Um you will need to get a different o2 housing because it will not work with the stock 1G housing (PR also makes a gorgeous recirculated housing that has a lifetime warranty). You should just check out eBay and get a cheap Megan racing SS test pipe that bolts in. I think their like 90 dollars or something... or since its really just a pipe.. find someone to fabricate one that will work...

[GRAVEDIGGER]

Originally Posted by R91TsiAWD

I actually just bought and received my PR 3" downpipe, and its a really nice piece and I think it's a great choice! Um you will need to get a different o2 housing because it will not work with the stock 1G housing

I just remembered that it won't fit the stock o2 housing. Thanks for mentioning that.

[Tiki2777]

Catless is the best way to go dude, but you may want to look at a quality catback. Good choice on the downpipe.

[R91TsiAWD]

+1 on getting a quality catback. Even though that eBay exhaust is cheaper, sometimes quality is sacrificed to make things cheaper. Plus, when you buy an exhaust from a company that supports the DSM community, your only helping the development of bigger and better things. I personally recommend the Thermal R&D! But if your curious about how a certain exhaust sounds... just YouTube it!

[bluelsr90]

Thermal is a awesome system. You may want to check vrs exhaust as well. I personally have a 2.5 inch turbo back system from them and it sounds good plus performs well. They make 3 inch systems as well.

[bryanwheat]

Originally Posted by boost97gst

No way you have emissions out in the sticks. I live in IL in a small town east of stl and we dont have them. If you dont, then go catless. Save the money and enjoy the sound and bump in power.

Even if you don't have emission testing they will still require you to have a cat to pass a safety inspection.

[jpv91120]

I got the complete SRS exhaust that come with the downpipe that eliminates the cat. The downpipe went from 2.5" to 3" so it bolted right up. Was very impressed with it and everything lined up perfect. Go catless if you can.

[KCz Eclipse]

Tiki2777, you say i should buy a different catback. But isnt all the piping the same. Cant i just change out the muffler later on down the road if i want to? And what all will i need to buy for everything to go on correctly. Any new flanges or other things?

Oh, i forgot to add: can somebody explain how the exhaust system works. Like does it start at the exhaust manifold, then go to _____, then to ______, then to ________. I have always wondered.

Thanks

[69_luv]

Originally Posted by KCz Eclipse

Tiki2777, you say i should buy a different catback. But isnt all the piping the same. Cant i just change out the muffler later on down the road if i want to? And what all will i need to buy for everything to go on correctly. Any new flanges or other things?

Oh, i forgot to add: can somebody explain how the exhaust system works. Like does it start at the exhaust manifold, then go to _____, then to ______, then to ________. I have always wondered.

Thanks

Exhaust starts by coming out of the head(top of the engine right in front) it then goes through a collection called the exhaust manifold (some would call it the header), then into the "hot side" of the turbo, then into the O2 housing. The exhaust can split here if you have external wastegate or external dump on the O2 housing, at the end of the O2 housing is where your downpipe (abbreviated DP) starts and for 1g guys ends where the catalytic converter (called the cat), and from the cat back is the "cat back (abbreviated CB) to the muffler and ends at the tip of the exhaust pipe.

With all that said and the mods on your list save your money from the exhaust and get some supporting mods. With what you have just cutting the cat out and putting a test pipe will do. I think you could get way more gains out of turning the boost up on the turbo by feeding it fuel via a Walbro 190, a set of Evo injectors and a wideband. You could just get LINK right now and get tuning under your belt. If your asking about how exhaust flows you might rethink some of your build choices, or not go either way!

[KCz Eclipse]

Okay, and i was told i will need to change the o2 housing to be able to run the new 3 inch down pipe. What o2 housing am i looking for. Just any housing made for my year car, that will enable a 3inch down pipe to bolt to it?

[maddogxx]

Originally Posted by jpv91120

I got the complete SRS exhaust that come with the downpipe that eliminates the cat. The downpipe went from 2.5" to 3" so it bolted right up. Was very impressed with it and everything lined up perfect. Go catless if you can.

+1 I just installed my SRS 3" turbo back exhaust, bolted rights up, all the hangers matched up, looks like a nice product just have to finish a couple other things before I start it up to hear it!!

[rastmp]

Dont forget megan downpipe/catback...cant go wrong due to price/value

[KCz Eclipse]

No, you don't want to go with a slip fit on that system. It will be more trouble than it's worth. Why exactly are you wanting to run a cat? Do you have e-check where you live? If not, I would just go with a test pipe like this 89-94 Eclipse Talon Exhaust GST Test Pipe 3" 1G , Bolt On Fit

Will this test pipe fit my gsx. It says in the description gst. If it fits thats great. Its an amazing price.

[KCz Eclipse]

Will it fit?

Okay, well if nobody will answer that, are there any other test pipes that are 3 inch besides the megan racing test pipe?

[KCz Eclipse]

Will it fit?

[Bud92gsx]

Whats wrong with the megan racing test pipe.. Its what you need right? Why the big deal over megan racing or not..

I have a megan turbo back..It actually sounds better than i thought...I thought it was gonna sound like a mean ass honda.No,it sounds pretty damm good.and its less loud than i thought it would be too.

I have an actual test pipe,but a pipe is a pipe..Everybody says thermal,cause they have oval mufflers.


But,idk if this is just megans or what.But the dp,and catback,at the flanges,are cocked..like this one is at 90 degrees,well the other side is at 60-70 degrees.

[fast420a83]

I agree with Bud.. I had a full Megan racing exhaust set up from the turbo elbow to the muffler, and it looks and sounds good (deep growl)!.. Plus they are good company to deal with. I got my product in only a few days.

[69_luv]

I just installed my Megan catback and PR downpipe and couple of pointers. DO NOT just hack your exhaust off in case something doesn't fit and you might need to go back to stock until you have a fix. SECOND I would not recommend doing this in your driveway if your going with some of the lower budget systems. At least find a place you can put it on a lift and work it. My Megan had two hangers wrong and I had to cut them and weld two different ones; also the bolt pattern to my PR downpipe was wrong(on the Megan side not PR). All and all it was not easy and I am crazy luck I didnt try it in my driveway.
It is also highly recommended that you weld all the connections instead of just the exhaust clamps if the system you are putting on is going to stay on. Clamps are prone to leak...

All and all I love the Megan catback
It was mentioned Thermal catback and I don't think the appeal is that they are oval, it's that they have a kick in the tip that makes the exhaust come out straight versus Apexi/Megan that #### out slanted. If I had the money I would go Thermal as they sound better IMO and I don't really care for the slant.

[unplugged]

I had a custom dp and catback made for my car. Cheaper and probably just as good as those 'proven' ones.

[Bud92gsx]

My megan turbo back the hangers were all correct..Weird right.

I did mine in the driveway..It was bolt on all the way.

Although havhing a AN oil drain and 3 inch DP, are not fun to have to mess with the oil drain.

[boost97gst]

Originally Posted by Bud92gsx

My megan turbo back the hangers were all correct..Weird right.

I did mine in the driveway..It was bolt on all the way.

Although havhing a AN oil drain and 3 inch DP, are not fun to have to mess with the oil drain.

Thats the difference. Ebay exhaust systems wont fit exactly perfect with your hangers. Mine rattles a bit now due to it being about 1/2" short in one section and its hitting the rear crossmember. Not too annoying but im sure other more expensive brands got it nailed down perfect. I spent less than 300 on entire turbo back system and overall im very pleased with it.

I also did mine in the driveway lol, no time for a lift when your an anxious dsmer!!

[Bud92gsx]

I paid 250 for a turbo back, with non ebay tubular o2 housing. Fit great..Besides the overhang on the 7cm turbing housing.Not a big deal to me tho.

Going with a exhaust shop setup is really not a big deal either.For about the same as an ebay setup, and you don't have to put it on.

[weaponx122412]

I would suggest the downpipe from Road Race Engineering. It starts out at 2 1/2" (so it will bolt directly up to your stock O2 housing), then goes to a 2 1/2 flex section (which is significant for allowing the exhaust to "flex" when the engine rocks back & forth & it takes the stress off of the rest of the exhaust components) & then expands to 3" with a 2 bolt flange (4 3/16" from hole centers). They make a short & long version. The long version obviously eliminates the cat. If u go with the short version, which is what I did, for inspection & emission purposes. From here u can either buy a premaid test pipe, i.e. Megan racing or Strictly Import Motorsports, or just have one made at a local exhaust shop. Or u can go with a 3" high flow cat. RRE makes a direct bolt up one, though its extremely expensive. If u need or want to run a high flow cat, I would suggest buying a universal "slip fit" one & have an exhaust shop weld on some extra pipe & flanges. I say extra pipe because most universal high flow cats are only 11" long & the length of the stock cat section is 16". U can find 3" universal cats anywhere, not just dsm vendors, & as cheap as $50 for a metallic spun one. The only issue is having the flanges welded on at the correct position & being the correct flange for whatever exhaust system you choose. Most 3" systems use the standard 2 hole flange with a 4 3/16 hole to hole diameter. Obviously, the easiest way to make sure its done properly is to have the whole system hanging on the car, except for the cat, & then line everything (cat, extra pipe, flanges) up & mark it or spot weld it, take it back off & have it welded together. If u buy a test pipe, u can now easily switch between the two. Now for the cat back system, that's completely up to you. Megan, Apex, & many others will bolt right up to this setup. I prefer the Thermal R&D one, even though u have to cut off the step down end & weld some pipe & a 3" flange to have it bolt up, but its worth it. Of course u could just buy some eBay 3" cat back & weld on a Thermal muffler. Hope this helps.

Oh yeah.. the main reason I suggest the RRE downpipe is for clearance issues. Besides being able to bolt directly up to the stock O2 housing & having a flex section, because its on 2 1/2" at the beginning you wont have any problems with the exhaust hitting anything, like the Turbo oil drain tube.. great product!

[98talondb]

eBay 3 inch sound damn good I have a full 3 inch hi power hks on my tsi talon and a 3 inch eBay n1 knockoff on my spyder and it sounds really good I had to modify the spare tire part to fit the exhaust but just buy down pipe hi flow cat and catback you will be inpressed

[KCz Eclipse]

Has anyone used one of thte $60 o2 housings from ebay. Just curious because $60 is dang cheap.

[NHerron]

I have the MeganRacing 2.5" o2 housing, I paid around $70. It's great, and fits on the turbo a bit better than stock. It also changed the exhaust note/pitch for whatever that's worth to you. Unfortunately eBay o2 housings a lot of times come with warpage. The mounting flange is either uneven and sometimes doesn't fit the DP angle as great as they should.

And exactly what 16G do you have? Eliminating the cat in a 3" exhaust can cause boost creep in a hurry. I would go with a high flow cat in a 3" exhaust setup or if you don't want a cat, stick with the stock o2, 2.5" DP, then 3" to lessen the chance of 16G boost creep.