lean afr's when switching injectors
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You are over running the regulator by 35psi. The coil of the injector cant open against the head pressure and the car idles dead lean...opposite of what you would think would happen.
Choice is wire the second pump on a hobb, wire the pumps to the factory wiring so that the 9v-14v crossover works at idle.
Then proceed to tune.
Not sure why it didnt do this to you last year but it should have been.
Aaron
Choice is wire the second pump on a hobb, wire the pumps to the factory wiring so that the 9v-14v crossover works at idle.
Then proceed to tune.
Not sure why it didnt do this to you last year but it should have been.
Aaron
Either way I will take power off one of my pumps today when I try the larger injectors again to see if my issue resolves itself. If so ill just order a hobbs switch as you have reccomended since its a non expensive fix.
Last edited by 03evilution; Feb 7, 2013 at 10:30 AM.
But why does it idle on the stock injectors and not the 1350's? Would buying an aftermarket fpr help with this issue?
Either way I will take power off one of my pumps today when I try the larger injectors again to see if my issue resolves itself. If so ill just order a hobbs switch as you have reccomended since its a non expensive fix.
Either way I will take power off one of my pumps today when I try the larger injectors again to see if my issue resolves itself. If so ill just order a hobbs switch as you have reccomended since its a non expensive fix.
The other time you can see it is the crossover on the the second pump kicking being too low and the fuel pressure is too high. Some kits would kick on at 2-3psi where it needs to be 7-8 and you find a really bad misfire because the car is temporarily lean right where it cant be (in boost).
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so i took power off the second pump and changed the maf comp vs coolant temp and car now idles. thanks for the help guys.
so what size hobbs switch do you recommend...7 psi?
so what size hobbs switch do you recommend...7 psi?
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actually i do have one more question...i dont believe my pump that i have on for idle is wired to the resisted stock power suppy...what color wires in the stock harness are the power and neutral so i can wire that correctly?
https://www.evolutionm.net/forums/ev...mp-rewire.html
im at work again and alot of info is blocked for me. but i think this might help.
im at work again and alot of info is blocked for me. but i think this might help.
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So i went ahead and rewired one of the pumps back into the white wire on the harness and once the hobbs gets here ill wire the second pump back up...thanks again
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