MSD BAP killing battery? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

caper · 10-21-2021, 09:38 AM

as titles says, possible? its wired and as far as i know set correctly. i do see it blinking when the car is off... any way to set this so that it doesnt (if it is) drain the battery? battery dies when the car is sitting a few weeks. only other thing i can see thats on is my aeroforce gauge blinking.

quinthawk · 10-21-2021, 10:36 AM

My MSD does the same thing. That is how it works when used in the Camaro.
I put a battery charger on the car if I know it will not be driven for a while.

Greenhornet2 · 10-21-2021, 10:53 AM

The BAP doing this is normal. MY car is fine for months without starting it. Your gauge is more likely the issue. gauges should power off completely. charge battery. remove negative battery cable. hook a test light or multimeter between the negative battery terminal and the disconnected cable. pull fuses until the light goes out or multimeter shows the draw drop out. that circuit is where the draw is.

eLeSthree · 10-21-2021, 01:01 PM

My HP Tuners MPVI pro also has a green light when the obd2 is connected and key off. My car doesnt get driven often either, so if it sits for a few weeks, I try to unplug the obd2 cable and/or disconnect the neg battery terminal. If I dont, I have to charge the battery.

If its lit up, its not helping.

AGP Turbo · 10-22-2021, 05:43 PM

The way MSD's instructions are written assumes that the power to the FPCM is switched on/off with key. It is not. The FPCM has power all the time and is put to sleep by the BCM.
Sooooooo, you need the thinner orange wire from the MSD to go to a switched source in the fuse box. That will fully turn it off when the car is off.

caper · 10-23-2021, 10:26 AM

Quote:

Originally Posted by AGP Turbo

The way MSD's instructions are written assumes that the power to the FPCM is switched on/off with key. It is not. The FPCM has power all the time and is put to sleep by the BCM.
Sooooooo, you need the thinner orange wire from the MSD to go to a switched source in the fuse box. That will fully turn it off when the car is off.

ohh! so its entirely possible, and likely, its draining the battery. ok. add that to the to do list.

Greenhornet2 · 10-25-2021, 07:13 AM

I shouldn't assume MSD is the same as my JMS. Sounds like AGP knows the MSD's!

Tarendor · 11-09-2021, 07:46 AM

It would be simple to put in a 30/40amp relay to trigger the power to the bap with a key on event. (Piece of cake and problem solved)

10-21-2021, 09:38 AM	#1
caper Drives: 2010 IOM 2ss/RS Join Date: Sep 2009 Location: SoCal, I.E. Posts: 1,545	MSD BAP killing battery? as titles says, possible? its wired and as far as i know set correctly. i do see it blinking when the car is off... any way to set this so that it doesnt (if it is) drain the battery? battery dies when the car is sitting a few weeks. only other thing i can see thats on is my aeroforce gauge blinking. __________________ Turbonetics running 8lbs boost at 700rwhp tuned by Hi Rev, installed by K&M w/cat-muffler delete, ACS splitter, Fesler GFX, MPD1 spoiler, Custom painted Rally stripes, Cordon CR1 wheels 275/315s, Hotchkiss comp sways and end links, Barton shifter

10-21-2021, 10:53 AM	#3
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	The BAP doing this is normal. MY car is fine for months without starting it. Your gauge is more likely the issue. gauges should power off completely. charge battery. remove negative battery cable. hook a test light or multimeter between the negative battery terminal and the disconnected cable. pull fuses until the light goes out or multimeter shows the draw drop out. that circuit is where the draw is. __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

10-21-2021, 01:01 PM	#4
eLeSthree Drives: 2011 Camaro SS 6sp Join Date: Nov 2016 Location: Drivers Seat Posts: 1,904	My HP Tuners MPVI pro also has a green light when the obd2 is connected and key off. My car doesnt get driven often either, so if it sits for a few weeks, I try to unplug the obd2 cable and/or disconnect the neg battery terminal. If I dont, I have to charge the battery. If its lit up, its not helping. __________________ 2011 Camaro SS---SOLD TMS Dart 427 FED M311s, ESS Tuning G4 Blower, DSX Triple FP Assembly, DSX FF, FIC1300, Mcleod RXT 1200HD, Edlebrock Pro Flo XT 1158whp 1017wtq. 2010 CTS-V A6 - "Stock" SOLD 630whp 658wtq 2024 F-150 RCSB 5.0 4x4 waiting for tunes...

10-25-2021, 07:13 AM	#7
Greenhornet2 Drives: 2011 Camaro 2SS LS3 Whipple Join Date: May 2019 Location: Connecticut Posts: 1,925	I shouldn't assume MSD is the same as my JMS. Sounds like AGP knows the MSD's! __________________ Whipple 2.9 CAI ID1050x injectors ZL1 Pump JRE FPCM JMS Voltage booster JRE Rough Idle blower cam BTR .660 springs CHE trunnion kit 1 7/8 Speed Engineering Borla Atak JRE scoop 1.5" lowering springs BMR trailing arms and toe links Cradle inserts 704WHP 603WTQ 93 octane

11-09-2021, 07:46 AM	#8
Tarendor Drives: 2012 camaro 2ss rs L99 Join Date: Feb 2017 Location: North Sioux city SD Posts: 446 View My Garage	It would be simple to put in a 30/40amp relay to trigger the power to the bap with a key on event. (Piece of cake and problem solved) __________________ 2012 2SS/RS, L99, no cats/mufflers, Ported intake manifold, fuel rail upgrade, ID1050x injectors, Vmax throttle body, 25% UDP, GPI DOD delete, GPI SS3, GPI cnc heads, GPI – 5/16″ Hardened Pushrods, BTR trunion upgrade, BTR .660 springs, pcv revamp w/dual catch cans, Circle D 3800, full BMR suspension & bushings. ZL1 fuel pump, HPT programmed fpcm. JMS bap, Snow VC-50 methanol setup. custom 4gal methonal tank, vs7875 turbo, FMIC, precision 46mm WG, 50mm BOV, 3bar map, SJM line lock, Innovate SCG-1, Hurst shifter with tap shift mod, ×2 Holley 14" fans Diy E85, Diy auxiliary pump

10-21-2021, 10:36 AM	#2
quinthawk Drives: 2010 camaro ss, 2012 ZL1, 2021 LT1 Join Date: Oct 2009 Location: Iowa Posts: 125	My MSD does the same thing. That is how it works when used in the Camaro. I put a battery charger on the car if I know it will not be driven for a while.

10-22-2021, 05:43 PM	#5
AGP Turbo Drives: All things Turbocharged Join Date: Dec 2010 Location: AZ Posts: 1,199	The way MSD's instructions are written assumes that the power to the FPCM is switched on/off with key. It is not. The FPCM has power all the time and is put to sleep by the BCM. Sooooooo, you need the thinner orange wire from the MSD to go to a switched source in the fuse box. That will fully turn it off when the car is off.