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Some $58 fun....

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Old Nov 6, 2005 | 08:37 PM
  #1  
Doward's Avatar
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Some $58 fun....

Looks like the BPC vs EGR just uses the first data bit for non-EGR usage?

In that case, I'm computing BPC of 55.49 for a 3.1L running 36# injectors... sound right?

Also, the $58 is a 16k bin? Do I need to burn it at any offset?

Converting the harness and going to load up the '749 code on the '730 ecm running an SU129 tomorrow, thought I'd bounce a couple things off the brains in here

Also, since the prom IS an original 3.1L ('91) prom, the knock code should be correct on it, yes? I'll be throwing a code for that, but I would like to wire up a knock sensor for this little guy...
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Old Nov 7, 2005 | 08:07 AM
  #2  
Doward's Avatar
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
Anyone?

This is the formula I used -

BPW Constant = 1461.5 x (cyl vol / inj flow rate )

Cyl vol = vol of 1 cyl in L
inj flow rate = flow rate of the injectors in grams/sec

I would also like to know if there is any way to shut off the knock sensor in the code (or at least disable it temporarily, until I can wire one up)

Last edited by Doward; Nov 7, 2005 at 08:22 AM.
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Old Nov 7, 2005 | 10:28 AM
  #3  
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From: garage
Engine: 3xx ci tubo
Transmission: 4L60E & 4L80E
I just installed the $58 code yesterday and used this formula for BPC:

BPW vs EGR
The correct formula is: BPC = 730.75 * (vol of 1 cyl / inj flow in gms per sec)

BPC = 730.75 * (VOL / RATE)

; VOL = Vol of 1 Cylinder in liters
; RATE = Injector flow in gms/sec
;
; gms/sec = (lbs/hr / 3600) * 453.6
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Old Nov 7, 2005 | 10:45 AM
  #4  
Doward's Avatar
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Joined: Aug 2002
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From: Gainesville, FL
Car: 1988 Chevy Camaro Hardtop
Engine: Turbocharged/Intercooled 3.1
Transmission: World Class T5 5 Speed
So ~83.24? I'll start with that, and see what goes on....

Btw, this is a 6 cyl MPFI application
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