2G External Wastegate setups

[pickens]

I've been looking for an External gate setup but I can't find any setup that DOES NOT dump the exhaust to the atmoshphere. I want to recirculate the exhaust back into the downpipe. Are there any downpipes or o2 housings that will allow this, or do I have to get this custom fabricated. And if so, what kind of costs am I looking at.

 

['98 AWD DSM]

The one setup that I know of that allows you to dump the exhaust back into the downpipe is an o2 housing made by Victory Perfromance. They have awsome stuff, I have a tubualr o2 housing made by them and it is sick, but I am running a dump tube. If I rember correctly it costs a little bit more to have one made to route it back to the downpipe. Hope this helps.
-Andrew

 

[espinelli]

yup. victory motorsports. just talk to Scott and they'll get you a stainless o2 housing. depending on your turbo they even have O2 housings that will support and external gate and recirculate right back into the O2 housing.

 

[espinelli]

yup. victory motorsports. just talk to Scott and they'll get you a stainless o2 housing. depending on your turbo they even have O2 housings that will support and external gate and recirculate right back into the O2 housing.

sorry I meant victory performance...here's the link
http://www.victoryperformance.com/product/makemodeltypeparttype.cfm?makeid=11&ModelID=5&PartTypeID=2

good luck

 

[pickens]

I just checked out the prices on these o2 housings!! It would run me almost $400 just for the flanged O2 housing itself. Add another $200-300 for the wastegate and I'm looking at almost $700 just to have boost control! No added performance!

I think I will look into getting an internally gated 50trim for only $900. I've heard they don't boost creep and boost stays where you set it.

 

[espinelli]

yeah pretty high...i would give them a call just to verify the pricing. i think they have specials every now and then. punishment racing and maybe a couple other vendors out there make O2 housings as well.

 

['98 AWD DSM]

Yeah I paid quite a bit of money for mine but it is well worth it. If you do order it wait till you see the craftsmanship. I highly recommend them. ALso ^^ punishment racing something to check out.
-Andrew

 

[1fast97gsx]

Why not just have a dump on the wastegate? Thats how mine is set up and it sounds mean and no creep. Oh yea .. and it's cheaper.

I know it's kinda hard to tell ... i had to move the radiator away from the block about 1/2 - 3/4" ... don't ask ... but it only cost me about $2 for a cut off wheel. I have the dump go towards the radiator .. then it does a 90 bend and points straight down. Fits perfectly and no creep. Oh yea and it sounds badass.

 

[espinelli]

very loud i'm sure hey how do you get around emissions?

 

[pickens]

That's what I don't want. The loud "blaaaah" from a atmospheric dump. I really, really don't want to pay anywhere near the price for these setups though.

 

[espinelli]

i'm confused, i thought you were looking for an external wastegate setup.

 

[espinelli]

so are looking for to purchase a tail wastegate or similar product and reroute back into the exhaust?

 

[pickens]

Correct. I want it re-routed back into the exhaust flow.

 

[Blk_99gst]

i'm confused, i thought you were looking for an external wastegate setup.

He is looking for an external wastegate setup. That just means that the wastegate is not located in the turbo, but rather outside of it. What the wastegate does with the gases is another thing. 99% of external wastegates dump to the atmosphere. You can also get the o2 sensor housing that can dump internally gated turbo gases to the atmosphere.

In my opinion the victory performance's parts aren't worth the money. Yes they are excellent quality and look great, but they are just way too pricey. I was shopping for a 2.5" o2 dump housing, and it was going to be about 300 from them. I found a 122performance 2.5" o2 dump housing on the trader for 100 bucks. And even new they are only $165. And they are nice pieces. Not bling-blingly like the vic performance ones, but they get the job done well. Just my opinion.

Also, if you're going to be going with an external wastegate setup, I think you should dump. If you don't want to pay the extra money to re-route back in, or if you don't like the sound, then you should stick with an internally gated turbo.

 

[camman420]

If you want a external and dont have a lot of money just weld a 38mm tial flange off of the #1 runner, mount the wastegate and then have an exaust shop rerout the dumptube back into your exaust. Many people will argue not to flange off of the #1 runner but there are a lot of people on the boards that are doing so and making 400+ whp.

 

[1fast97gsx]

If you want a external and dont have a lot of money just weld a 38mm tial flange off of the #1 runner, mount the wastegate and then have an exaust shop rerout the dumptube back into your exaust. Many people will argue not to flange off of the #1 runner but there are a lot of people on the boards that are doing so and making 400+ whp.

Yea that's the way to do it. Just have it mounted and set up for dump just so you can drive it. Then take it to an exhaust shop and have them weld a pipe to you downpipe and to the wastegate outlet. They can route it. Have both ends flanged is you can still easily take off the exhaust,

 

[Blk_99gst]

Many people will argue not to flange off of the #1 runner but there are a lot of people on the boards that are doing so and making 400+ whp.

I'm just curious what the argument is for not flanging off the #1 runner. Never heard that or the corresponding argue to that before. Just wanting to learn about it.

 

[1fast97gsx]

very loud i'm sure hey how do you get around emissions?

I don't see how that would matter. Our cars are awd so at the emissions place they just let them idle for a while and maybe tap the gas once in a while. The wastegate doesn't open until you hit full boost though and that won't happen at emissions. Besides ... what's the difference? Say you route it back into the exhaust through an external gate or just have an internal to begin with I don't see how that would matter as far as emissions goes... in both cases it's air from your exhaust just getting to the muffler a different route .. or with a dump not at all.

 

[Blk_99gst]

I don't see how that would matter. Our cars are awd so at the emissions place they just let them idle for a while and maybe tap the gas once in a while. The wastegate doesn't open until you hit full boost though and that won't happen at emissions.

Although this is true, that the wastegate doesn't open until full boost, I'm going to rip you a little below...

Besides ... what's the difference? Say you route it back into the exhaust through an external gate or just have an internal to begin with I don't see how that would matter as far as emissions goes... in both cases it's air from your exhaust just getting to the muffler a different route .. or with a dump not at all.

Sorry, but you couldn't be MORE wrong about this. Emissions testing is cutting down on harmful gases produced by the engine. These harmful gases are reduced by passing them through the catalytic converter!!! Hence, dumping any gases before they pass through the cat is HIGHLY illegal and will not/should not pass emissions.

You're right, they won't hear it if they put the car up on a dyno, but during a visual inspection under the hood, they can and will flag you for a dump tube if the tech knows what he's looking for. They look for anything that's not hooked up, or just open. So a vented bov can fail you. Although you can argue that one that all that it is releasing is filter compressed air before the engine. But you can't argue about a dump tube. Highly illegal. I have my lower heat shield covering mine to the point where you can't see it, so that's how I get away with mine.

 

[camman420]

I'm just curious what the argument is for not flanging off the #1 runner. Never heard that or the corresponding argue to that before. Just wanting to learn about it.

The argument is that that because you are only venting pressure from one runner the gasses have to travel back up that runner in order to be vented off by the wastegate. This is probably true but for most people the small loss in effeciency in not that significant, but I could see how it could be if you are moving air in significantly greater amounts , such as in a very high horsepower motor. But this doesnt seem to be a problem for the majority of people here, take dsmjim for example, he has an external mounted on one flange and has it dumped back into the exaust and he is running 12's

 

[espinelli]

He is looking for an external wastegate setup. That just means that the wastegate is not located in the turbo, but rather outside of it. What the wastegate does with the gases is another thing. 99% of external wastegates dump to the atmosphere. You can also get the o2 sensor housing that can dump internally gated turbo gases to the atmosphere.

In my opinion the victory performance's parts aren't worth the money. Yes they are excellent quality and look great, but they are just way too pricey. I was shopping for a 2.5" o2 dump housing, and it was going to be about 300 from them. I found a 122performance 2.5" o2 dump housing on the trader for 100 bucks. And even new they are only $165. And they are nice pieces. Not bling-blingly like the vic performance ones, but they get the job done well. Just my opinion.

Also, if you're going to be going with an external wastegate setup, I think you should dump. If you don't want to pay the extra money to re-route back in, or if you don't like the sound, then you should stick with an internally gated turbo.

thanks. i wasn't confused about internal and external wastegates and if they dump to the atmosphere or get rerouted. i was confused by the original poster....i thought he had contradicted himself.

 

[espinelli]

Although this is true, that the wastegate doesn't open until full boost, I'm going to rip you a little below...


Sorry, but you couldn't be MORE wrong about this. Emissions testing is cutting down on harmful gases produced by the engine. These harmful gases are reduced by passing them through the catalytic converter!!! Hence, dumping any gases before they pass through the cat is HIGHLY illegal and will not/should not pass emissions.

You're right, they won't hear it if they put the car up on a dyno, but during a visual inspection under the hood, they can and will flag you for a dump tube if the tech knows what he's looking for. They look for anything that's not hooked up, or just open. So a vented bov can fail you. Although you can argue that one that all that it is releasing is filter compressed air before the engine. But you can't argue about a dump tube. Highly illegal. I have my lower heat shield covering mine to the point where you can't see it, so that's how I get away with mine.

i agree. that was the info i was looking for re: emissions. obviously a wastegate that dumps to the atmosphere will not open unless the engine has a load. however, as you said if there is a tech there that knows what he's looking for you will fail visual inspection. l hope the state doesn't come out with an AWD test.

 

[kyanox]

Old Thread Bump

If your worried about passing inspection, move to a state where they aren't worried about emmissions, like Montana.

Wide open roads, no crappy government telling you what you can and cant do.

 

[crimsondragon]

Wow really? You bumped up this old thread to say that? I might just have to give you the unofficial "Lamest Post Ever" award.

 

[BoostFrenzy]

And I'll give you the official one. But instead of a trophy, you get kick in the nads. Its not a...uh....very welcomed award.


As for the actualy thread, any kind of external will most likely get you caught at inspection. Dosn't matter if you cover it with something because then it's, "oh hey, that metal isn't rusted or dirty...wonder what's behind it?". This is why I am finding all the little bits to have a T25 sitting there when the time comes....or if I get Ref again .

Other then that, right now the options are pretty open for where you can get a recuirculated external o2 housing. Punishment has them, Maperformance has one, and I believe straight line specialties has them aswell.