what's the consensus on EBC for 951?

redNeckarsulm2 · 04-12-2001, 11:01 AM

ok Factoids, (you know who you are) what is the communal wisdom on E Boost Control for 951's?
Apexi, Profec, etc? Worth the cash? Why?
How difficult to use/install, and any benefit on stock car? Seems like there might be...

1.2gees · 1.2gees's Garage

Apex-i sells really good boost controllers that can be programmed to gear, type of fuel, etc. Along with an electronically (and mechanical failure back up perhaps so you don't blow up your engine tuning the boost controller) controlled wastegate, you can manipulate how boost comes on, how MUCH boost comes on, etc. quite nicely. Their air/fuel computer/control devices are also top notch. All you need is a way to NOT let the DME get a signal as to how much boost you're running, when you're at overboost (according to factory spec). With the knock sensor in place, the engine will still be relatively reliable. Apex-i stuff modifies the info from and/or to the DME. You can get quite close to a total engine management system, as far as controlling/modifying the stock engine parameters go. Well worth the money.

PS: They're about $370-500 each for air/fuel, and boost controllers, sweet displays etc. too.
Ahmet

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It's all the driver...

wolfrpi · 04-12-2001, 12:47 PM

As an owner of a 951 I can say that the Greddy Profec A is an excellent controller that is easy to install and works great! I didn't bother with the Apexi unit because it is complicated to set-up and must be reprogrammed with each change on the car (Exhaust, etc.). In addition, I got the profec cheaper (new and un-opened). How about the setting up of the AVC-R - try 5800 or so RPM in fourth gear to get a boost curve. Good luck on not getting thrown in jail! No thanks, but I'll stick to my fuzzy logic controller without all the extra bells and whistles.

Erick

redNeckarsulm2 · 04-12-2001, 12:53 PM

does it make sense to stick one on a stock 951?
What is involved in the installation?
(ProfecA)

wolfrpi · 04-12-2001, 02:55 PM

Your stock cyclic valve intentionally bleeds off boost on the low and top end to smooth the power take off and to lessen the harm on your engine respectively. If you want to get more power and responsiveness out of your car with your stock turbo, an EBC will help big time.

Erick

[This message has been edited by wolfrpi (edited 04-12-2001).]

1.2gees · 1.2gees's Garage

It bleeds off to be less harsh with power delivery, so less experienced people don't spin the car, and also less stress on the driveline... However, it is overly protective, and a 44t can handle MUCH more power, coming on a LOT harder than stock, that's definetely a given.
Ahmet

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It's all the driver...

redNeckarsulm2 · 04-13-2001, 05:52 AM

So, we're saying there IS an advantage to going to an aftermarket electronic boost control? right? I'm thinking an aftermarket wastegate is also a good idea...

I'm wondering, do the boost controllers have some provision for traction control? (as in, reducing boost in wheelspin conditions), and if so, could this be tied into the ABS hub-signal on the drive wheels???

Hmmm?

1.2gees · 1.2gees's Garage

Yes, you'll definately reduce the lag, and increase max power, with an aftermarket wastegate alone. A boost controller will get you tunability. Though harder to install, Apex-i is a great choice, truly superior to anything short of a full on engine management system (such as motec).

I believe Motec, and few other engine management systems are about the only things you can do, to have traction control, tied to abs sensors. However Apex-i would have the ability to limit power output, if the RPMs rise too rapidly I believe. Be it slipping clutch, or burning out.
Ahmet

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It's all the driver...