Injector wiring
#1
Injector wiring
I have a `90 Vert Turbo. After blowing some seals, I had it rebuilt by Banzai Racing in Ind. I had GSL-SE injectors installed for secondaries. Where should I look for the resister change for replacing them with stock inj.? Bad gas mileage and only getting about 5# of boost with stock S5 turbo, engine has street port and 3" exhaust but I think the cat. is fouled by too much fuel and not enough boost.
Last edited by misterstyx69; 11-03-12 at 05:51 AM. Reason: Don't slip in any hints of selling.
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Your 90 S5 requires high impedance injectors so if that's what you want to to install as a replacement to the low impedance injectors then it is a simple swap. If your GSL injectors are low impedance and the car was set up to work off of low impedance injectors then there would have been a change made so the low impedance injectors would have worked and that would be either resistors were placed inline along one of the wires to each injector or a resistor box (found on early S4's) was wired in to do the same thing. If you have neither then it is a simple remove the old and replace with the new.
In looking back at your original post if you had a shop install low impedance injectors on a high impedance system then there would be a change made as illustrated above but this takes into account that the injectors were indeed low impedance and they knew what they were doing. If they installed low impedance on your S5 and made the modification necessary then there would be an inline resistor on both of the secondary injector wiring (only one resistor per injector and there are two wires to each injector so one of them would have the resistor). And this resistor would need to be removed.
In looking back at your original post if you had a shop install low impedance injectors on a high impedance system then there would be a change made as illustrated above but this takes into account that the injectors were indeed low impedance and they knew what they were doing. If they installed low impedance on your S5 and made the modification necessary then there would be an inline resistor on both of the secondary injector wiring (only one resistor per injector and there are two wires to each injector so one of them would have the resistor). And this resistor would need to be removed.
Last edited by satch; 11-02-12 at 03:09 PM.
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