ok..i have read the forums and looked up and down, and Race94
asked the question here
http://www.dsmtuners.com/forums/showthread.php?s=&threadid=43866&highlight=EVO+III+16g

but no one answered...i have a 98 eclipse GS-T
i want a street/strip turbo so i hear the 16g series
of turbos are the way to go.

BUT i dunno if i should go with the EVO III or the
Big 16G....?? right now im leaning towards the
EVO III but after looking at pics of the turbo i know i
will need an elbow to connect it to the i/c piping.

the SBR-B16G comes with a welded elbow.
both are great prices. but my question is
will i need a 2g install kit for it?

do i need to buy an EVO III o2 housing?

i used to have a t3/t4 but got rid of it cuz had too much
lag. plus i want a nice setup that will make my fwd a quick
car but sleeper when i pop open the engine bay.

currently i have intake, injen intake pipe, greddy BOV,
Apex DP, Tanabe Exhaust, GReddy Profec B, APex FMIC
and UIC.

as of all the reading i have done...seems to me the EVO III will
bolt right on to the 2g manifold and the EVO III o2 housing will
bolt up to the Apex DP (has a flex section)

hopefully i am right...

THANKS FOR YOUR TIME!!!

btw...any DSMer's from Socal...would love to meet up...whens the next meet?

The Evo3 16G is a bit nicer than the Big16g. I'd call Mike@Slowboy and ask him for specifics.
I'd assume a 2nd Gen o2 housing will bolt up, but I don't know. I have an Evo3 o2 housing sitting right here next to me and so I'll be using that and an Evo3 Exhaust manifold with a Evo3 16g when the times comes (when I can afford it).
As for DP's I'm going to get mine from RRE. They offer there DP's as either short (will need a cat or test pipe) or long (bolts up to the cat-back) with an Apexi flange. They also make a version specifically designed to bolt up to the Evo3 o2 housing.
You will need the same things for the install of the Evo3 16g as you would a small or big one - depending on where you get it from.

-T

Originally posted by KPWSerpiente
...As for DP's I'm going to get mine from RRE...They also make a version specifically designed to bolt up to the Evo3 o2 housing....
-T

Click to expand...

I'm interested. How much for this DP?

Also, if you have a big enough flex section, will any DP bend to fit the Evo III O2 Housing? AHP DP's come with huge flex sections; I could get one of those.

Thanks,
Jake

You don't need an Evo III O2 housing, but it will help. If you don't get one, or a tubular O2 housing, at least port your stock O2 housing.

The Evo III 16G is definitely the way to go over the small and big.

I'm interested. How much for this DP?

Click to expand...

$230

Also, if you have a big enough flex section, will any DP bend to fit the Evo III O2 Housing? AHP DP's come with huge flex sections; I could get one of those.

Click to expand...

I don't know. I'm under the impression that you will need to do some custom work to get it to match up. But I don't know. If the flex section was big enough you might be able to bend it to fit.

But, RRE is your friend. http://www.roadraceengineering.com/eclexhaust.htm
They are here to help.

-T

seems to me that the Evo III B16G has the performance that im looking
for. i spoke with Mike from SBR and he is suggesting the T28.

honestly i never really considered a T28 an option due to the
fact that it looked stock and i figured how much air could it possibly
flow? i might be mistaken...but for the price im not too sure if
i should go that route.

the Evo III turbo also needs a 2G install kit...maybe an O2 housing (no one has made that crystal clear yet if i DO need one to bolt up to my Dp)
another Exhaust manifold (most people talk about buying an Evo III em)
so im not too sure about that.

starting price on the Evo III turbos are under $600.00 BUT...
with all the install kits and wut not....it comes to over $800.00
NOT PORTED.

im really confused here...

the old T3/t4 i had before had great top end but ALOT of lag...
i want a more street friendlly turbo.

any more suggestions...

AGAIN...thanks for your help with this subject guys!

WELL I JUST GOT OFF THE PHONE WITH KEVIN AT SBR BECAUSE I WAS HAVIN THE SAME ISSUES U WERE. HE TOLD ME THIS,,,THE 16G EVO WILL BOLT UP PERFECTLY TO A 2G O2 HOUSING, HE ALSO TOLD ME THAT THE EVO O2 HOUSEING WILLNOT WORK BECAUSE IT USES SLOTTED HOLES SO IT DOESENT BOLT UP TO A 2G DOWNPIPE ...... SO JUST PORT THE HELL OUT OF THE 2G O2 HOUSEING AND USE THAT




I ALSO FOUND THIS AT FP WEBSITE UNDER EXHAUST AND EVO 02 HOUSEING "Due to minor differences between the EVO and the stock housing, it must be used with an aftermarket downpipe that has slotted holes"

NICE! thanks for the info....that gets me a lil closer to where i need to be!

I've been reading up on the Evo III 16g since it's been out, and it is a great turbo but some have gotten uncontrollable boost creep. A huge downpipe is sometimes the guilty party which is why I like the RRE downpipes. Most DP's are true 3" or true 2.5" and RRE points out that 2.5" is more than enough for the first 12 inches of the exhaust stream (while the gasses are still hot). I would think that their DP's might prevent or as least relieve some of the Evo 16g's boost creep problems.

Jake

i have a evo big 16 and i love it and it is ported with 3'' down pipe with ported o2 housing no boost creep spools fast as hell

ya..i have a 2.5 DP to 2.5 cat to 3" exhaust...i figured that would
be enough....

Originally posted by boosty
i have a evo big 16 and i love it and it is ported with 3'' down pipe with ported o2 housing no boost creep spools fast as hell

Click to expand...

Don't believe me? Look here. Many people with an Evo 16g and boost creep issues. One guy had creep even up to 25 psi. Is the 34mm flapper not big enough? Is there a bigger flapper than you can upgrade to? Or is the only solution porting the shit out of the wastegate passages?

Jake

i must be old school, because if my turbo wanted to run 25psi, i would let it and be ever so happy.

i wouldn't look at it as boost creep, i would look at it as you trying to starve your turbo. let it run what it wants to, if you didnt build the car to handle x-psi, should have built it up right the first time.

but who the hell am i, thats just my $.02

Originally posted by hoffman
i must be old school, because if my turbo wanted to run 25psi, i would let it and be ever so happy.

i wouldn't look at it as boost creep, i would look at it as you trying to starve your turbo. let it run what it wants to, if you didnt build the car to handle x-psi, should have built it up right the first time.

but who the hell am i, thats just my $.02

Click to expand...

Yeah that's good advice. Thanks here's a $.01 change.

Anyhow back on topic, if you just port the entrance to the wastgate it will cure the boost creep. You DON'T need a 34mm flapper and the downpipe isn't the problem because people with all sizes of downpipes are having the same issue.

its ok, keep the penny, looks like you need it a lot more than i do.

you cant just port the entrance to the WG and expect everything to be fine. if you do that you you now have a 34mm WG passage and a 30mm flapper door. if you mean just port the entrance and leave the flapper alone, you still didn't solve anything because the gas is still bottle necked behind the flapper door.

there are a zillion homebrew cures for this, almost as many as there are reasons for crankwalk.

i just bought that turbo. boost creep is horrible without the flapper mod. turbo was ported did not solve prob. im having a new flapper installed this weekend.

Originally posted by 98autogstspyder
i just bought that turbo. boost creep is horrible without the flapper mod. turbo was ported did not solve prob. im having a new flapper installed this weekend.

Click to expand...

Who ported it? What was ported? Is your O2 housing wastegate tunnel ported?

My question to you is, would you realy let something as small as an elbo get in the way of buying a better turbo for about the same price??

Who ported it? What was ported? Is your O2 housing wastegate tunnel ported?


Slowboy racing ported it. I dont remember what part it is called that was ported. I dont think it was the exhaust side and it was not the flapper hole. Whatever part slowboy ports , was ported on my turbo. I dont know what u mean by wastegate tunnel. My exhaust is a 2.5'' o2 eliminator downpipe with a 3'' cat back section. My 2g manifold is ported.

I am wondering if there is anyway to fix the problem with my turbo without changing the flapper.

mods r in profile

Tyler

Originally posted by jake98gst
I've been reading up on the Evo III 16g since it's been out, and it is a great turbo but some have gotten uncontrollable boost creep. A huge downpipe is sometimes the guilty party which is why I like the RRE downpipes. Most DP's are true 3" or true 2.5" and RRE points out that 2.5" is more than enough for the first 12 inches of the exhaust stream (while the gasses are still hot). I would think that their DP's might prevent or as least relieve some of the Evo 16g's boost creep problems.

Jake

Click to expand...

Lets not make RRE look too good, Apex-i N1 downpipes have been like that for a long time.

Originally posted by Groomz
Lets not make RRE look too good, Apex-i N1 downpipes have been like that for a long time.

Click to expand...

Bad experience with RRE? I just found another place that does them like this. ExhaustDepot.com has AWD DP's for 170 and they're stainless steel. FWD ones are 205 since they have more bends. So let's not make Apex-i look too good because the Exhaust Depot ones that are ss and cheaper too.

RRE's an awesome company, no doubt about that.

I just think its weird when people bolt up a 3 inch downpipe and exhaust to a stock sized O2 housing and complain about boost creep. I believe RNR also has a stepped downpipe available. I think its way better to have a progressively larger diameter exhaust than just bolting on a sewer pipe and hoping for no boost creep. I had a 1G AWD with the 14b and a 3 inch no-cat exhaust and it creeped to 20+psi. Any company you go with mentioned above is well worth it, I just have a fancy for Apex-i exhausts.

Originally posted by 98autogstspyder
Slowboy racing ported it. I dont remember what part it is called that was ported.

Click to expand...

It's your turbine inlet that's ported, and they did a nice job from what I remember when I saw yours.

Originally posted by 98autogstspyder
I am wondering if there is anyway to fix the problem with my turbo without changing the flapper.

Click to expand...

Shape, any advice? I had originally advised Tyler not to worry about getting the larger flapper, based on some of your posts about this subject I had read here and (I think) at NABR. I'm hoping there's something that can be done that doesn't involve taking the turbo off the car again.

Shapes got the creep too. We discussed this on Talk. I pulled mine off a week or so ago and removed the step and enlarged the inlet to the wastegate. I did not do anything to the flapper. I was creeping to 25-26psi. A little more than I wanted to push on a pump gas, daily 100 mile round trip driver. I have my boost controller set at 20 psi and it remains there even in 20 degree weather.