Anybody familiar with B&G Performance PCM?

[CobraMarty]

For a slightly modded (CAI,TB,headers,cat back) 1998 4.0, What can he change?

Better fuel map, better timing map?
remove speed limiter, raise rpm limiter?
turn on electric fan earlier?

What else?

 

[streetxj]

For a slightly modded (CAI,TB,headers,cat back) 1998 4.0, What can he change?

Better fuel map, better timing map?
remove speed limiter, raise rpm limiter?
turn on electric fan earlier?

What else?

Sidewaysstarion mentioned that his ECU was tuned by Chris. Chris programmed his ECU with 3 degrees timing advance, the Mexican fuel map (I guess it's more aggressive than USA fuel map) and he had his cruise control activation speed lowered. I'm pretty sure Chris can remove the speed limiter, raise rpm limiter and program an lower temp setting for the electric fan to turn on earlier. I think Sidewaysstarion would clarify this. Personally, I think emailing your questions to Chris himself should give you an even better idea of what he can do with your ecu.

 

[Talyn]

He can:
Increase speed limiter (mine is at 254, yah!)
Increase the rev limiter (won't help us with the AW4 as it has a separate TCM)
Increase the idle RPM (stock mine was 648, its now 800 rpm)
Turn the torque management off (effects transmission shifts)
Turn stall torque off (effects transmission shifts)
Adjust fuel map
Adjust timing map (I have 6* added)
Turn cylinder misfire code mil to off
Change the duration the AC compressor turns off under WOT(mine turns off for 10 seconds)
Change cruise control range
Change extended idle RPM, if you have the switch connected
Change other setting for aggressive cams
Convert to a 2 bar MAP and associated maps for forced induction
Disable after cat O2 sensor(s)
Convert to open loop only

That is just what I know about, I am sure he can do more. He is quite good and very accommodating.

 

[CobraMarty]

I have 2 extra ecu's.
I might have him tune one for my 2nd XJ- N/A, TB, CAI,headers, cat back exhaust. This is pretty representative of what is commonly on the board here.

I wonder if he can change my spare ecu to my VIN?

-ok-Increase speed limiter (mine is at 254, yah!)
-ok-Increase the rev limiter (won't help us with the AW4 as it has a separate TCM)
-ok-Increase the idle RPM (stock mine was 648, its now 800 rpm)
-ok-Turn the torque management off (effects transmission shifts)
-ok-Turn stall torque off (effects transmission shifts)
-ok-Adjust fuel map-FOR BETTER PERFORMANCE
-ok-Adjust timing map (I have 6* added) -IF THAT IS THE BEST
-ok-Turn cylinder misfire code mil to off-I DON'T KNOW WHAT THIS DOES?
-ok-Change the duration the AC compressor turns off under WOT(mine turns off for 10 seconds)
-ok-Change cruise control range

-No-Change extended idle RPM, if you have the switch connected
-No-Change other setting for aggressive cams
-No-Convert to a 2 bar MAP and associated maps for forced induction
-No-Disable after cat O2 sensor(s)
-No-Convert to open loop only

 

[sidewaysstarion]

Chris can set the VIN and the mileage on your 2nd ecu and if need be disable the anti-theft.

 

[streetxj]

He can:
Increase speed limiter (mine is at 254, yah!)
Increase the rev limiter (won't help us with the AW4 as it has a separate TCM)
Increase the idle RPM (stock mine was 648, its now 800 rpm)
Turn the torque management off (effects transmission shifts)
Turn stall torque off (effects transmission shifts)
Adjust fuel map
Adjust timing map (I have 6* added)
Turn cylinder misfire code mil to off
Change the duration the AC compressor turns off under WOT(mine turns off for 10 seconds)
Change cruise control range
Change extended idle RPM, if you have the switch connected
Change other setting for aggressive cams
Convert to a 2 bar MAP and associated maps for forced induction
Disable after cat O2 sensor(s)
Convert to open loop only

That is just what I know about, I am sure he can do more. He is quite good and very accommodating.

I think the cherokee would disintegrate if you hit 200 mph. :laugh:

With 6* added to timing, do you need to run premium fuel?

Also, I thought only the grand cherokees with the chrysler transmissions have torque management.

And what do you mean by turning off the stall of a torque converter? Did you mean the lock and unlock feature of it? I think the stall is controlled by the internal construction of the torque converter, which includes the angle of the blades of the turbine-like part which controls the fluid flow within the converter.

 

[XJLI]

Torque management? So harder shifts? I'm intrigued. I'll be emailing Chris.

 

[Talyn]

I think the cherokee would disintegrate if you hit 200 mph. :laugh:

Well, first it would need to get there. It would need one hell of an engine past my stroker with a coming SC.

With 6* added to timing, do you need to run premium fuel?

With my 9.5:1 compression stroker and 6* also added via CPS mod (12* total) I can run midgrade with just pulling 5* around 3800-4000 rpm.

Also, I thought only the grand cherokees with the chrysler transmissions have torque management.

Not so. It is there to protect the drive line and provide softer shifts. Removing it gives a much more connected feel. You only heard about it on the WJs because it was easy to disable by cutting a wire.

And what do you mean by turning off the stall of a torque converter? Did you mean the lock and unlock feature of it?

It has nothing to do with the torque converted itself but is similarly related to torque management. I can't find my notes on exact details at the moment.