Recommend a BC for the EvoIII

[98spydert]

Not quite so. First, defective or poorly designed boost controllers are known to cause boost spike by delaying pressure signal from reaching the actuator/wastegate. Secondly, external wastegate is not the only way to solve boost creep, in most cases.

Exactly, so bypassing the boost controller and eliminating the boost spike or creep problem would point to the mbc as the problem. It's common sense during diagnosing to run a line from a boost source directly to the actuator.

Most of the people with the evo316G have little luck eliminating boost creep by porting or using a tubular O2 housing (I didn’t). Fixes are an external, using a larger internal flapper (doesn't always work), or switching to a different turbine housing.

 

[oldman]

it cannot be mbc the reason why you have boost creep or spike

if you creap over 15psi ... there you go ... you need external wastegate ... experiance dude

I was referring to those two points, testing procedure....sure.

 

[oldman]

Most of the people with the evo316G have little luck eliminating boost creep by porting

That's because it was not ported properly, there are plenty of successful examples.

 

[98spydert]

That's because it was not ported properly, there are plenty of successful examples.

If that's true, please share the super secret squirrel technique of porting the evo3 turbine housing or O2 housing to eliminate creep. It would be one for the archives.

 

[oldman]

If that's true, please share the super secret squirrel technique of porting the evo3 turbine housing or O2 housing to eliminate creep. It would be one for the archives.

This is no secret. Without mentioning the obvious areas which needs to be ported that was cover by vfaq, the key to porting for boost creep is the turbine inlet, mainly exposing the entrance to the wastegate path. I have personally done this on my small 16g that use to creep to 23+psi, probably higher if I didn't hit fuel cut. I have also used the same technique on my gt12. I will let examples speak for themselves. This is the thread that turned me onto porting.

http://www.dsmtuners.com/forums/showthread.php?t=108843&page=2&pp=25

Here's another evo3

http://www.dsmtuners.com/forums/showthread.php?t=99090&page=2&pp=25&highlight=boost+creep

14b

http://www.dsmtuners.com/forums/showthread.php?t=166082&highlight=boost+creep

Here's one in progress awaiting results which provides the best pictures.

http://www.dsmtuners.com/forums/showthread.php?t=183108&highlight=boost+creep

There are more if you search.

 

[98spydert]

We're still talking evo316G here. You posted one link, I could post 25 for every one you could find like that. I'm sure you could find them yourself with the search function. (and if you're refering to myblack98gst in that thread, that's not an evo3 turbine housing)

I responded with the sarcasm because you made it sound like some sort of art that only a few people could pull off. Sure, a first timer in his garage with a battery-powered Dremel isn't going to be able to do much about boost creep on any turbo. Search for posts opposing your point and you'll be disappointed. It's a well-known fact that the evo3 turbine housing is problematic with boost creep; porting, tubular O2, sometimes even larger flappers. Like I said, if you don't believe me have fun searching.

 

[oldman]

We're still talking evo316G here. You posted one link, I could post 25 for every one you could find like that. I'm sure you could find them yourself with the search function. (and if you're refering to myblack98gst in that thread, that's not an evo3 turbine housing)

You obviously did not read them carefully.

I responded with the sarcasm because you made it sound like some sort of art that only a few people could pull off.

I went back and re-read my posts and I didn't get the same impression at all. If I came off like that to you, my appoligies. In fact, I think any first timer in his garage can easily do this with proper guidence. My 16g was the first time I ever ported anything.

Sure, a first timer in his garage with a battery-powered Dremel isn't going to be able to do much about boost creep on any turbo.

So you agree it could be done.

Search for posts opposing your point and you'll be disappointed. It's a well-known fact that the evo3 turbine housing is problematic with boost creep; porting, tubular O2, sometimes even larger flappers. Like I said, if you don't believe me have fun searching

This is not my point, it's a fact. You stated that EVO316g boost creep can not be resolved by porting, I provided you with some real examples which proved otherwise. This will be my last off topic post, let's stop arguing and return thread to daren_p.

BTW Negative rep points are not suppose to handed out simply because someone disagrees with you. Your comment implied that I shouldn't correct people's posts and you couldn't have been more wrong. A big part of our responsibilities besides answering questions is to make sure all info posted are factual.

 

[daren_p]

For the guys that actually helped me with my question, thank you, but 90% of the posts on here have nothing to do with the origional question.

My EVOIII doesn't creep, I can hold 14 psi most of the time. The most it ever crept was to 15 psi and that was in 40 F weather. I did the extra porting in the problem areas that I read about on other posts & it seemed to work well for me (I also did the same for a buddy & his holds 14 psi as well). Holding the boost constant isn't an issue either. Like said it's the boost spike on initial spool up between switching gears that my controller is having the problems with & why I'm looking for info on a new one (currently set @ 18 psi). If you don't have experience with the EVOIII turbo it won't really help me out as the same controller doesn't always work the same with different turbos (my turboxs hp mbc worked fine on my t25). If you could tell me what bc your running with your evoIII and how much if any boost spike you get after shifting, that would be great. 1 or 2 psi would be fine with me but when I see 5 or 6 psi spike, I think thats too much.

If anyone has experience with the greddy profec b spec II or the new type s let me know as I'm leaning towards one of these if they do function as well as the origional profec b's.

 

[devlish]

ported EVOIII B16g, 2g Manifold, Evo02

SRP manual BC from Ebay, $15

spikes to 16psi, settles at 15.5psi and is rock solid up to redline in every gear (haven't tested redline in 5th gear yet though)

hope that is what you were looking for

 

[ken inn]

like i said before, evo 3, 18 lbs boost, evo 2 housing, profec b2. at wot it goes right to 18 and stops. i have never seen it spike. prior to that, i had a joe p mbc, and had both spike and creep. that's my story and i'm sticking to it, bc issue or not.

 

[daren_p]

like i said before, evo 3, 18 lbs boost, evo 2 housing, profec b2. at wot it goes right to 18 and stops. i have never seen it spike. prior to that, i had a joe p mbc, and had both spike and creep. that's my story and i'm sticking to it, bc issue or not.

Is your controller the profec b spec 2 (newer unit) or is b2 an older unit?

 

[GPTourer]

Any recommended places to shop for a Profec? Extreme has it on their site for 420, but it looks like the same description they've had on their for a while for the old "b".

 

[1gdsmraider]

GP you can't go wrong with a Hallman Pro w/ in cockpit kit, thats what i want

 

[VBGSX]

Any recommended places to shop for a Profec? Extreme has it on their site for 420, but it looks like the same description they've had on their for a while for the old "b".

Ouch.
A quick vendor search:
http://www.roadraceengineering.com/eclgages.htm
$340

another:
http://www.slowboyracing.com/more.php?id=880&
$329

http://thespeedfactor.com/ebc.html
$330

or
http://www.horsepowerfreaks.com/sale/performance/Electronics/Boost_Controllers
Their profec B spec II is $315
They also have the Profec type S for $325

http://www.extremepsi.com/store/customer/home.php?cat=277
They have both also
Spec II $329
Type S $329

Just go here:
http://www.dsmtuners.com/forums/faq.php?faq=faq_item_misc#faq_faq_item_sponsors
And zip around all the vendor spots

Good luck

 

[GPTourer]

A quick vendor search:
Good luck

Thanks.

 

[white 2g awd]

or:
http://search.ebay.com/greddy-profec-B_W0QQfkrZ1QQfromZR8
between 260-280

i really wish this could help me with my evo III keeping consistent boost, but i'm not too much of a believer yet....that it will work for me at least. i had mine set at i think 16 or 17, and at about 5.5k and up it would creep to about 22-23 psi. this is with a cheap hallman boost controller.

 

[oncehuman]

Not quite so. First, defective or poorly designed boost controllers are known to cause boost spike by delaying pressure signal from reaching the actuator/wastegate. Secondly, external wastegate is not the only way to solve boost creep, in most cases.

I agree with oldman here and that is why I kept my Profec B2 after replacing my Turboxs MBC with it. Reason is that is with the b2 I am able to finely tune the controller to my specific applications. It allows you to make fine adjustments through trial and error. Right now I got it almost fine tuned on my high setting to where I get immediate boost response where ever in the rpm range. I still get a little spike here and there around half and 3/4 throttle. So I like my Profec.
Chris

 

[neuro]

I use the Profec B-Spec II along with an Evo III 16G turbo. No spike or creep, currently running ~16psi all the way to redline. I suspect that I won't have creep issues until I rid myself of the stock O2 housing and downpipe. Then...well who knows? Judging by the anecdotes on here, it might and it might not??? I'll just have to find out the hard way.

As long as your actuator works well, it's fairly easy to tune out boost spikes with this Profec, you just have to mess around with the Gain and Start boost settings until you have it right.

$420 is ridiculously expensive for this controller! I paid ~$280 for mine on eBay last year, so I'd like to think these are getting cheaper since they've been replaced by the Spec S (which seems to be the same solenoid with a simpler to deal with controller).

The thing I like about the B-Spec II that the OG B spec and the new S don't have is a boost gauge, which is nice if you haven't sprung for a real boost gauge (like me), but don't want to rely on the factory "boost approximation" gauge. Plus, the boost limiter and peak functions come in handy during tuning sessions. Beware of the undocumented limiter feature...it sets itself to 1 bar (14.7) EVERY time you turn the car on until you press at least one of the buttons on the panel. Nice safety feature in lieu of a dedicated "valet" feature, but annoying if you forget it and someone wants to race. This "feature" is nowhere to be found in the manual, I had to read about it in a posting I found somewhere.

 

[ken inn]

Is your controller the profec b spec 2 (newer unit) or is b2 an older unit?

huh? my manual says profec B-spec II. whatever that is, that's the one i got. it's about a year old. ebay 280.

 

[neuro]

huh? my manual says profec B-spec II. whatever that is, that's the one i got. it's about a year old. ebay 280.

There are 2 different "Profec B" controllers. There's the old 3 knob Profec B, which was a simpler revision of the Profec A without the Fuzzy Logic. Then, there's the B-Spec II, which has a backlit LCD display, one knob and two buttons on it. Now theres the Type-S, which is almost just like the old Profec B, but with the Spec II's solenoid. Most of the ones on eBay are B-Spec II's. I personally like the Spec II, but it IS hard to come to terms with it's crappy user interface at first.

Profec B -

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Profec B Spec II -

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Profec Type S -

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[mean_green_98]

profect B spec. 1 all the way. have, love it, never puy another one again.

 

[boostedinaz]

profect B spec. 1 all the way. have, love it, never puy another one again.

I agree.

 

[white 2g awd]

how about this, how many of you with the profec and the evo III have a 3" turbo back on??? with out creep or spikes....just curious, you guys are kind of talking me into one....even though my car wont run till next year, but just thinking ahead.

 

[daren_p]

Good to know guys are running the b spec II and having good luck with it. Anyone else running on of these or the type s?

 

[daren_p]

Well I went with simple, ordered the Profec type S. Should have it next week sometime so I'll post my results when I get them.