What turbo is as big or bigger than the EVO III and never creeps?

[99gst_racer]

External also adds the "Ganster-bling, mega-sooper type r effect, yo"!

Never ever confuse an external wastegate with the "Honduh Type-R" hype.....
That's like saying a 3" turbo-back exhaust is ricey because it adds to the noise level produced by the engine. Performance parts are typically not "Ganster-bling" and "mega-sooper".

EDIT: nevermind this post; I just read the part about sacarsm.

 

[DGajre777]

I'm a huge fan of this! DNP rules!

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[RedTurboEclipse]

"do not hold higher solid boost levels with an internal wastegate."

what would you consider higher solid boost levels?

 

[ShapeGSX]

"do not hold higher solid boost levels with an internal wastegate."

what would you consider higher solid boost levels?

My turbo holds 26psi with the stock internal gate. You only have issues with holding solid boost when you have a flapper that is too large.

 

[95GSXBLUR]

Both STI's that i'm talking about have APS 3.5" exhaust and they hold 28-30 just fine.

the wrx and the evo's are 3" turbo back. as is mine. so I'm not really sure what you're trying to say.. haven't really had a problem with creep.. i might not be at 400whp yet but it's in the works.

external gates are loud, take up room and you can definitely tell that a car is heavily modded by having a big external. i like internal for sleeper aspects.. you can tell all the honda ricers your turbo is stock

 

[steve]

external gates are loud

Your confusing external wastegates with external dumps here. You don't have to run a external wastegate to a external dump, you can route it back to the exhaust like in picture above.

Steve

 

[JoeyJigglesGSX]

Just curious, but, what made you decide against the external wastegate?

well i just dont want to mess with my exhaust manifold...i have just heard some horror stories about like the expanding of the metals and stuff...just sounds like a headache.

DGajre777, that is the most amazing set up i have ever seen, now i wouldn't mind doing that later on down the road...was that a kit or something? kind of turned me on, haha. Is there enough room with that set up to go past the stock fans?

and i forget who said it, but how does having "too" big of a flapper cause boost creep?

 

[daren_p]

well i just dont want to mess with my exhaust manifold...i have just heard some horror stories about like the expanding of the metals and stuff...just sounds like a headache.

DGajre777, that is the most amazing set up i have ever seen, now i wouldn't mind doing that later on down the road...was that a kit or something? kind of turned me on, haha. Is there enough room with that set up to go past the stock fans?

and i forget who said it, but how does having "too" big of a flapper cause boost creep?

I'm not sure if anyone said too big of a flapper will cause boost creep? because its the opposite. I know someone said too big of a flapper will cause your boost to fall off at high boost levels, which is true.

 

[JoeyJigglesGSX]

I'm not sure if anyone said too big of a flapper will cause boost creep? because its the opposite. I know someone said too big of a flapper will cause your boost to fall off at high boost levels, which is true.

aww, my apologies

 

[95GSXBLUR]

Your confusing external wastegates with external dumps here. You don't have to run a external wastegate to a external dump, you can route it back to the exhaust like in picture above.

Steve

nah I understand.. i guess most people just dump their external... i just don't like the fact you have to change your manifold and O2... the one with all the stainless is hott, a couple of posts up.

 

[GPTourer]

the one with all the stainless is hott, a couple of posts up.

But looks expensive. I'm about to switch to a non flappered EVOIII because I have outgrown the 34mm job. What are the pros and cons of having an external on the manifold versus the DP? I was looking at SBR's new mani and a Tial 38, but then I'd need a new DP right? I'm using a O2 eliminator right now. An atmospheric dump is out of the question.

 

[SpoOLxExO]

You don't have to change the DP if you are going to be running off the manifold.

Won't have to change the DP on an O2 housing External setup either, like the one I posted on the first page.

All you need to do is (If you have the ability, if not hire someone w/ a welder) punch a hole out of either the DP's first inches away from the first bend, or ream a hole out of your O2 housing, and weld a pipe off the Wastegate's discharge to it.

Clean, noise-less, and good-looking!

EDIT: This was my last car. The pic here was in the middle of fabrication, I ended-up routing the other half of the wastegate pipe into the down-pipe itself.

 

[DSM Jeff]

I use to have a creep problem when i was running a full 3" downpipe and trying to run 15 to 17 psi. My turbo would creep really bad. I've since gone to a Road Race dp that is 2.5 through the flex and am running 20psi with no creep. My turbo is ported and i'm running an evo3 unported o2 housing. I think the downpipe has helped out. I'm not worried about loosing anything, the car is a daily and it does what i need. Just figured i'd share my experience.

 

[99gst_racer]

i just don't like the fact you have to change your manifold and O2....

You don't have to change them out. You can continue to use the stock manifold and O2 housing if you want it. I run my 38mm Tial off of the stock manifold.

But looks expensive. I'm about to switch to a non flappered EVOIII because I have outgrown the 34mm job. What are the pros and cons of having an external on the manifold versus the DP? I was looking at SBR's new mani and a Tial 38, but then I'd need a new DP right? I'm using a O2 eliminator right now. An atmospheric dump is out of the question.

Read This

 

[ndilo21]

But looks expensive. I'm about to switch to a non flappered EVOIII because I have outgrown the 34mm job. What are the pros and cons of having an external on the manifold versus the DP? I was looking at SBR's new mani and a Tial 38, but then I'd need a new DP right? I'm using a O2 eliminator right now. An atmospheric dump is out of the question.

It cost $1099 from SBR.

http://www.slowboyracing.com/more.php?id=3542&

 

[GPTourer]

Thanks, for the how-to info.

Ha, yeah - I was just looking at that page. I'll try the EvoIII 31mm stock first, because I just don't have that kind of cash. A setup like that deserves something intense, IMO, something way bigger then an EVO III. Someday maybe...

 

[UPGRADED2G]

It cost $1099 from SBR.

http://www.slowboyracing.com/more.php?id=3542&

There was add in the classifieds with that exact setup going for 600. I missed out on it but i got one similar without the o2 bought from that same seller. DNP manifold with the 40mm wastegate with dump. My car never felt so good under boost. IMO, the hype about how loud an external is, is over-rated. I can live with it.

 

[JoeyJigglesGSX]

i still cant get over how amazing that DNP manifold/wastegate set up is.

here is a question for everyone. How much of a difference do you think a 2.5" downpipe to the flex and a 3" high flow cat does to your car? do you think it makes a really noticable difference?

 

[GPTourer]

IMO, the hype about how loud an external is, is over-rated. I can live with it.

Wait, you mean you have an external dump, right? I have heard that, but does an external wastgate make any more noise, even when it is routed back into the exhaust?

 

[99gst_racer]

Another thing to think about, regarding external wastegate noise:
The higher amount of boost that you run, the less the wastegate has to open. Back when I was running 12psi, it would come open all the time and it would open farther than it has to now, making it pretty loud. Now that I run 22 psi daily, it opens up a fraction of the time that it used to and when it does open, it's half as loud as it used to be. Hell, I can drive around boosting 12-14 psi all day long and never hear the wastegate. (but I'm a true fan of the "noise" anyway)

 

[SpoOLxExO]

i still cant get over how amazing that DNP manifold/wastegate set up is.

here is a question for everyone. How much of a difference do you think a 2.5" downpipe to the flex and a 3" high flow cat does to your car? do you think it makes a really noticable difference?

Yeah, that makes me lactate too!

But regarding downpipe size...

People have been busting 11's for almost 10 years on press-bent, aluminized, 2.5" Turbo-backs.

3" exhaust is cool to say you have for a street-car, but a 3" system only shows its true colors when you are pushing more than 25-psi on a nice-sized turbo.

3" + internal wastegates = frustrating boost inconsistancy.ITs not the size, its the design. Flappers are too iffy.

That is why it is hard to keep the EVOIII in check with a full 3" turbo-back, w/o an external wastegate.

 

[oldman]

That is why it is hard to keep the EVOIII in check with a full 3" turbo-back, w/o an external wastegate.

Not hard at all, you just have to set it up right. Here's an example, 14psi to redline with no creep what so ever.

 

[SpoOLxExO]

what about with higher boost?

 

[oldman]

what about with higher boost?

Boost falling at higher rpms are mainly associated with larger flappers (38mm) and it doesn't happen in every case either. The person in that thread had a 34mm flapper but it's not needed, he could have easily achieve the same results using the 31mm. There are plenty of us running internals without any problems, right daren_p?

 

[SpoOLxExO]

Is there anybody here that runs 25psi solid w/ EVOIII (31mm flapper) besides ShapeGSX?

This info is going to help me out as well.

But besides being all selfish, hey Joey Jiggles!!! hows the plan coming, has this thread helped your situation at all?