Author Topic: powerlogger boost question  (Read 4044 times)

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Offline Shimy87

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powerlogger boost question
« on: September 14 2018, 04:56:35 PM »
I had a problem with alky activation this spring, Julio helped me figure out that the MAP wiring that went to the stock boost gauge was causing trouble, a short in the gauge. We eliminated it as I have an a pillar boost gauge. Getting ready for some track time end of the month so I got out the laptop and powerlogger dosent read boost info now.  How do I get this info to the computer now, I'm assuming by eliminating the signal to the stock gauge it also eliminated it to the computer ?
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline Steve Wood

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Re: powerlogger boost question
« Reply #1 on: September 14 2018, 05:22:19 PM »
on the stock cars, the map sensor never went to the ECM.  When installing it to the PL so you can log it, you have to run a wire from the map sensor output to the analog board that attaches to the powerlogger.

Maybe this will help     http://www.vortexbuicks-etc.com/PowerLogger.htm
Steve Wood

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Offline Shimy87

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Re: powerlogger boost question
« Reply #2 on: September 14 2018, 05:45:10 PM »
I was reading on your site and the full throttle forum and if I'm on the right track. Right now I only run the MAP signal to the alky controller. I can tap into the signal wire that is coming from the MAP to the alky controller and send that signal to the l2 connector on the PL and that should do it?

As always thanks for any help!!!
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline Steve Wood

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Re: powerlogger boost question
« Reply #3 on: September 14 2018, 05:49:20 PM »
Sounds right to me :)
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Shimy87

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Re: powerlogger boost question
« Reply #4 on: September 14 2018, 05:51:39 PM »
Thanks again Steve!! :cheers: :cheers: :cheers: :cheers:
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline Steve Wood

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Re: powerlogger boost question
« Reply #5 on: September 14 2018, 07:37:54 PM »
 :cheers: :atbeer:
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline earlbrown

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Re: powerlogger boost question
« Reply #6 on: September 14 2018, 10:59:09 PM »
I had a problem with alky activation this spring, Julio helped me figure out that the MAP wiring that went to the stock boost gauge was causing trouble, a short in the gauge. We eliminated it

... so I got out the laptop and powerlogger dosent read boost info now.  How do I get this info to the computer now, I'm assuming by eliminating the signal to the stock gauge it also eliminated it to the computer ?


Yeah, it's screwey how the factory wiring is on this circuit.  It goes from the MAP sensor to the boost/tach and then to the area above the ECM where we tap for boost logging.

When I took my boost/tach out for Caspers to rebuild my logging stopped working. 

 Note: I never did the jumper wire mod on Steve's site.   I think that'll fix it, but I can't say first hand either way as I haven't done it.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline Shimy87

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Re: powerlogger boost question
« Reply #7 on: September 21 2018, 01:01:00 PM »
Steve's wiring works great
87 GN, K&N cold air, gutted cat, TT 5.7 chip, AFPR, 340 Walbro w/ hotwire, 60 LBS injectors, 981 valve springs, 206/206 Cam, RJC Powerplate, LS1 MAF & translator, Vacuum brakes, Hellwig rear sway bar, Energy suspension poly bushings, Razors Alky, Pypes exhaust, 5931 turbo, CK9.5 converter

Offline Steve Wood

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Re: powerlogger boost question
« Reply #8 on: September 21 2018, 01:58:38 PM »
one of the few things i have left that still works
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

 

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