PDA

View Full Version : Pulling tune


L31Sleeper
June 23rd, 2010, 04:50 PM
Is it possible to pull a DSP5 tune out of a PCM ??
bballer182
June 24th, 2010, 12:12 AM
Not on a bosch truck (LBZ/LMM), But you can on the LLY/LB7
L31Sleeper
June 24th, 2010, 07:29 AM
Doesn't the LB7 have a Bosch PCM on the right valve cover
ScarabEpic22
June 24th, 2010, 02:37 PM
No, LB7/LLYs are Delphi based ECMs. 06 LLYs are a Bosch LBZ ECM IIRC, oddball of the group.
L31Sleeper
June 25th, 2010, 06:26 AM
What is that box just under the intake air tube ?

http://i885.photobucket.com/albums/ac54/Rader2146/LBZInstalled.jpg
ScarabEpic22
June 25th, 2010, 07:16 AM
Thats an ECM if Im not mistaken, Ive only ever worked on a 04.5 LLY where the ECM was mounted to the frame on the drivers side, near the AC compressor. So thats either an 06 LLY, LBZ, or LMM (dont know where the LBZ/LMMs ECMs are located though).
Dozerboy
June 25th, 2010, 08:40 AM
No thats the FICM the ECM in in the same area on all the trucks
L31Sleeper
June 25th, 2010, 09:19 AM
What is the FICM ??
ScarabEpic22
June 25th, 2010, 02:15 PM
Hmmm didnt know that, I was wiring a DSP5 switch up for a friend but Im pretty sure that the LLYs dont have that...

I would guess that FICM = Fuel Injection Control Module?

Makes sense the ECM's in the same place, I was a little confused when I thought GM moved it to the engine of all places?!
Dozerboy
June 26th, 2010, 08:08 AM
Correct Fuel Injection Control Module
L31Sleeper
June 26th, 2010, 08:21 PM
would that be like an injector driver ??
JOHNBOY
June 27th, 2010, 09:19 AM
Yes. The FICM is the injector driver. A separate driver is needed on LB7s and LLYs because of the high voltages needed to run the injectors. 96 and 48 volts respectively. The new injectors are lower voltage and can be run by the Bosch ECM directly.
KB3MMX
February 28th, 2011, 09:01 AM
What is that box just under the intake air tube ?

http://i885.photobucket.com/albums/ac54/Rader2146/LBZInstalled.jpg

The "FICM" is only on a LB7 or Early LLY right?
The 06' LLY doesn't use the FICM correct?



Thanks !
bballer182
February 28th, 2011, 01:15 PM
The 06 lly you are talking about really isn't an lly at all. Its really an lbz detuned to lly hp levels.
KB3MMX
March 2nd, 2011, 07:15 AM
The "FICM" is only on a LB7 or Early LLY right?
The 06' LLY doesn't use the FICM correct?



Thanks !


Correct, the 06' LLY doesn't have the FICM that's in that picture, it uses the LBZ type computer and injectors.....as BBaller said, it's basically a LBZ with detuned power in that year.
JoshH
March 2nd, 2011, 08:01 AM
Hmmm didnt know that, I was wiring a DSP5 switch up for a friend but Im pretty sure that the LLYs dont have that...

I would guess that FICM = Fuel Injection Control Module?

Makes sense the ECM's in the same place, I was a little confused when I thought GM moved it to the engine of all places?!
That is a picture of an LLY.
ScarabEpic22
March 2nd, 2011, 10:09 AM
That is a picture of an LLY.

I know, I posted that almost a year ago before I knew...
JoshH
March 2nd, 2011, 07:02 PM
Haha, sorry. I didn't look a the dates... :bangin:
ScarabEpic22
March 2nd, 2011, 08:05 PM
All good man, plus its better for future reference for those who dont!