North American Turbocoupe Organization



LA3 Computer Swap/Octane Switch Question
tylerport Offline
Senior Member
#1
I've got the LA3 installed in my 86, but don't know what to do about the Octane Switch pinout for the computer. Do I need to run 12v to it? or ground? I always run premium fuel, so there's really no need to install a switch.

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Jim Portteus
NATO Member
86 Turbo Coupe, LA3 w/ Intercooler and Larger VAM, Gillis Valve, 2 1/2" Downpipe to 2" Duals w/ 18" Glasspacks, 245/50R16's, 140MPH Speedo and new paint.
Jim Portteus
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Turbobob_dup1 Offline
Member
#2
If you connect the pin #46 and 24 together then the computer will see the switch in premium all the time.
87 Turbocoupe,T3/T4 turbo,much porting,AFPR,255lph pump,GN cooler,K&N in fender,gutted upper/knifed lower,big valve head,A237 cam ,60mm throttle body,Talon 1G BPV.
4 + 1 = 8!!
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tylerport Offline
Senior Member
#3
OK, thanks!

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Jim Portteus
NATO Member
86 Turbo Coupe, LA3 w/ Intercooler and Larger VAM, Gillis Valve, 2 1/2" Downpipe to 2" Duals w/ 18" Glasspacks, 245/50R16's, 140MPH Speedo and new paint.
Jim Portteus
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BROTHER-Rebel-OUTLAW Offline
Junior Member
#4
Quote:Originally posted by tylerport:
I always run premium fuel, so there's really no need to install a switch.

I always ran premium in my TC as well but I found the switch to be useful when cruising on the highway. In reg. I got better gas milage with the cruise on because the computer wouldn't allow as much boost while climbing slopes and inclines.
"I didn't think it was possible,
but this thing both sucks and blows at the same time" -Bart Simpson

BROTHERRebelOUTLAW
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