I currently am running a GM BCS in my car but I plan to go back to a manual boost controller. I'd like to just remove it all together so the ECU doesn't waste time thinking about boost control when its out of ECU control and so there is less stuff cluttering up my engine bay. Looking at the periphery map, it looks like the corresponding bit is FAA bit.6. Can I just disable this bit or does it also control other important/needed functions?

 

I would set WGDC to zero and be done with it.

 

Thats what I would do, but I think he is also looking to remove the CEL associated with not having the BCS plugged in.

Hopefully the periphery disable will make the ECU not worry about it at all, but as far as removing any code or skipping around it I'd recommend against any of that. The nature of the beast is that you don't know what all you are killing off by doing so.

I'd be just slightly concerned about removing some other boost/load related calculations (IE boost cut) by doing so, but I understand the desire to get rid of a CEL (and some clutter in the engine bay if it isn't doing anything).

 

Anyone know of the bit mentioned in the first post will disable the check engine light associated with completely removing the BCS and have no ill effects to other systems?

 

if you dont mind sharing.. why are you changing to mbc?

 

I am currently running with my boost solenoid unplugged and have no CEL because of it..

 

I never liked the GM BCS from day 1. I had it for a year and tried load-based and direct with a JDM MAP sensor. Its much more time consuming to adjust and boost was never as steady. Mid-range with the MBC is much stronger and power comes on much more quickly. Got rid of the GM BCS, reinstall a MBC, my issues vanish and my car puts down the most power it ever has.

 

I see.. yeah i heard its a bit time consuming to setup the boost as how you exactly want it. but i have seen amazing boost curves mostly from razorlab. so i just want to try it and see if i could hold more boost up top. if your GM BCS is in good condition and you want to sell it send me a pm.

 

I'll let you know, thanks. I might try putting it on my fiancee's WRX.

 

So i cant get rid of the selenoide without the check engine light on?

 

Same Q here...!!

 

I havent been around for a while cuz I dont have an EVO right now (should have one sometime this season), but i wrote the how-to's for controlling boost with the stock BCS and the GM 3 port. I too will be just running a MBC on my new evo. I just enjoy the simplicity of it and believe that great power can be mad with either form of boost control.

And yes, Razorlab is the man at tuning ECU boost. I also, have tuned perfect boost curves with ECU boost (load and direct), but it take longer and is more complicated then an MBC.

To each their own though...

 

I just want to eliminate the selenoide with no lights on. Also theres no way i could mantain 26 to 28psi at high rpm? It will be great!!

 

its very hard / impossible to keep the boost at 28psi by 7000 on stock turbo. its just too much air for the stock turbo. maybe if you get the turbo ported you could hold a bit closer there.

 

Ported where? And how?