which ebc to choose

[JayB98GST]

I need some help choosing which electronic boost controller to choose. Right now I'm thinking about getting either the AVC-R or the Profec B, but I hear that the AVC is really hard to set up correctly and that the Profec will only hold up to like 22 psi, which can be a problem when I decide to upgrade my turbo. Anyone have any recommendations on which controller is best?

 

[L2RTSiAWD]

Just say no to the AVC-R.

Profec-B is good.

I personally just got the Blitz SBC-ID, but that may be more coin then you want to spend.

I will have impressions of the controller on thursday.

 

[turbolover2]

I like the Blitz SBC-iD. It's nice, but a little too fancy for me. You don't really beed everything it does, and it does cost a pretty penny. The Profec B is, by far, my favorite EBC. Cheap and easy to use. JAYB98GST: Are you really going to be running more than 22psi? Probably not, so don't worry about it. And it can be made to produce more boost anyway, with a restrictor.

 

[nano]

I love my proffec but it refuses to give me any more then 22psi. My buddy had the same problem with the proffec on he's green turbo too.

What's this restrictor mod? I'd love to know how to do it. Specially since I plan to upgrade my turbo later on and would love to keep my ProffecB.

 

[turbolover2]

I don't know 100% if it will work. But in theory, it should. Place a restrictor in the vacuum line that goes to the wastegate actuator. It will not let as much pressure through, and will allow you to run more boost. So, let's say you're running 20psi. With the restrictor in place, and without changing the setting on the boost controller, you should, in theory, get a bump of at least a few psi.

 

[larryd]

ive heard that before as well.. im going to try it with my profec eventually

 

[turbolover2]

You could also bleed off some boost, but that's not accurate. One more thing that would work is to put a cheap MBC, like the Joe P. inline. Set it at a high boost level, and, when working in conjunction with the Profec, it will allow you to run higher boost levels than just the Profec alone.

 

[larryd]

yeah, it would act as a restrictor of sorts

 

[nano]

Dosen't the profec control boost by monitoring intake manifold preasure? If it does then it'll just keep trying to lower the boost whenever you restrict the wastegate line. But it it dosen't control boost this way then what is the vacumm line that connects straight from the intake manifold the proffec? THe one that has a small filter before it goes into the profec.

 

[BatmanGSX]

It seemed like there was this huge movement toward EBCs for awhile about two years ago and then everyone shifted back to the MBCs. I, for one, won't use any EBC on my car. Most of them slow your spoolup because they open too progressively and the one I can think of that for sure doesn't do that is limited in how much boost you can produce with it. Hmmm...

Why play guessing games? MBCs work.

If I had to choose one it would be the Profec B. I don't trust anything else at all. But the Profec B is limited to around 23psi.

 

[turbolover2]

The Profec B doesn't monitor anything, it works like an MBC. But it allows you to electronically control boost, with two settings. It doesn't "know" how much boost is being produced, it's up to you to monitor that. It just allows you to adjust the level. There are only two vacuum lines for the Profec B, one input from the turbo, and one output to the wastegate.

 

[nano]

There's a third vacumm line that goes straight into the proffec inside the car. It says to tap this line from the intake manifold. It has a small air filter too. I have no Idea what it's for though.

 

[L2RTSiAWD]

My blitx has one it uses teflon hose all they way to where you "T" it in the the IM. I know on my Blitz it is so it can diplay boost pressure.

 

[nano]

I guess I'll unplug it and see what happens.

 

[turbolover2]

Nano, you're right, there is a third line to the controller itself. I just looked over the instruction manual, but it doesn't mention what it's for. Maybe I'm wrong, and it does monitor boost level to regulate it to no more than 22psi. But even if that's the case, you can put a restrictor in that line insted of the one to the wasegate. There is a way around the low 20s boost regulation. I just need to play around with it to really get a specific and definate way of doing it.

 

[NDgsx]

WTF everyone I have talked to said that the profec could only run twice the wastegate spring rate. Are ALL you guys running internal wastegates?

 

[nano]

I don't know if it's twice the waste gate's spring rate or not. I heard this same theory too. But I know that people with adjustable internal wastegates have been able to run more then 24psi by setting the wastegate much tigher then normal. But that also prevented them from running any less then 15psi wich is fine by my. Too bad I don't have one of those.