Dash01

Now that folks have significant experience with Lindsey, Accuboost, Reliaboost, etc., WHAT IS THE BEST BOOST CONTROLLER FOR AN ESSENTIALLY STOCK (BUT CHIPPED) '86 951?

Jon Moeller

AVC-R

Mike1982

It depends if you want MBC or EBC. I am sure you will get a TON of different options on this. For a stock car, only chips, then I would lean more towards a MBC just because it is more simple, FAR cheaper plus if you want to upgrade or don't like it, you can get a new one without fear of losing a ton of money.

theedge

I was quite happy with a Lindesy Boost Enhancer...






Then I got a Profec A EBC

Sam Lin

Blitz SBC-iD is the best out there.

Sam

Willard Bridgham 3

All an electronic boost controller does is interpose a digital circuit between you and the turbo and cost lots of money.

Sam Lin

Willard, unless you've actually compared and tested them and have some data to show, you're spreading blatant misinformation. EBC has faster response and better control in all cases, giving more area under the power curve. It's quite well documented on dyno charts and performance data.

Sam

special tool

Willard - 15 posts in 3.5 years? You doing time or something, man?

Jeremy Himsel

Too funny.

I agree with Sam on the Blitz unit but it is pretty pricey. I opted for the AVC-R. The manual is pretty useless but once you set it up, it works great. For the money, a used gen 1 profec b works really with the stock wg.

I switched from a ebc to a mbc and back to the ebc and you can tell the difference in response between them.

RobNL

Sam Lin, I agree with the better and easier control of an EBC. It's just set and forget and you have the ability to roll off the boost at high revs.

But how can a EBC create more area under the power curve? I'm using a Tial wastegate with MBC and the wastegate stays closed until I reach maximum boost and it holds the boost all the way to red line. In what area can or does an EBC improve this?

fast951

I'm yet to make the switch to an EBC, still in the box going on 8 months now LOL.

An additional advantage is that the EBC does not fluctuate boost with temp changes. With the manual controller, I'm always adjusting the settings when the temp changes...

MySwiss was able to reduce his spoolup by 500-600rpm. I will be testing the Profec B (1st GEN) against the manual controller on the dyno. I will capture the boost vs. rpm (spoolup)..

Jeremy Himsel

I don't feel so bad now. It only took me five months.

pk951

I had a 16$ MBC worked great but in cold weather- 0c it would fluctuate 1to3 psi.

Know i use a Greddy pro-fec-spec2 holds boost steady in cold weather or hot.

Jeremy Himsel

PK,

I "heard" the spec 2 doesn't work well (or quite right) with a DP WG. Any insight? I need to pick up another EBC so I can dump the MBC and want the simplicity of the profec b bit the gen 1 used is about as much as the spec 2 new.

Sam Lin

Rob, for a wastegate spring to open enough to limit boost to a certain level, it needs to start opening at a lower boost level. This is due to how spring rates work, and how much bypass flow is required to control boost. Any early opening is lost power.

Besides the power difference, pk951 brings up a great point, and that's EBC safety. An EBC will not fluctuate with temperature and weather conditions, so you know your a/f will be correct at all times.

Sam