fuel pump rewire
#91
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Tommyfacekicker (Mar 13, 2018)
#94
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Thinking of using this method...
http://www.lancerregister.com/showthread.php?t=459924
anyone see any drawbacks? I feel that it is a little cleaner install. I would rather cut the wire there than at the top of the sending unit personally
http://www.lancerregister.com/showthread.php?t=459924
anyone see any drawbacks? I feel that it is a little cleaner install. I would rather cut the wire there than at the top of the sending unit personally
#96
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Thinking of using this method...
http://www.lancerregister.com/showthread.php?t=459924
anyone see any drawbacks? I feel that it is a little cleaner install. I would rather cut the wire there than at the top of the sending unit personally
http://www.lancerregister.com/showthread.php?t=459924
anyone see any drawbacks? I feel that it is a little cleaner install. I would rather cut the wire there than at the top of the sending unit personally
By connecting there, you will lose a little voltage from the 14V at the battery. I haven't fully tested my setup yet, but I think the biggest voltage drop is going through fuel pump relays 1 & 2. Hopefully, I'll have time to check this weekend to get a better picture of where the inefficiencies are.
Last edited by 2006EvoIXer; Mar 15, 2018 at 07:12 PM.
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Tommyfacekicker (Mar 16, 2018)
#97
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Thanks IXer
I am countering the loss of the 8v low voltage with a aftermarket fpr and drilled out siphon
I guess what I was asking is. Will I be splitting hairs between voltage drop with hooking up here vs 2 ft down the line at the plug on the sending unit?
i was comparing this way that I referenced with the original "how to"
#98
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Thanks IXer
I am countering the loss of the 8v low voltage with a aftermarket fpr and drilled out siphon
I guess what I was asking is. Will I be splitting hairs between voltage drop with hooking up here vs 2 ft down the line at the plug on the sending unit?
i was comparing this way that I referenced with the original "how to"
I just looked. It won't make enough difference if you want a clean install. 0.05V is nothing.
Last edited by 2006EvoIXer; Mar 15, 2018 at 07:24 PM.
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Tommyfacekicker (Mar 16, 2018)
#100
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I was wondering if I should even do a ground
andbif I definitely should.... should I tap into this wire here? Wire the relay to the "car side"? Then just ground that wire to the chassis? It wouldn't make a difference to Hook it to 10awg and hen hook to chassis would it?
#101
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I was wondering if I should even do a ground
andbif I definitely should.... should I tap into this wire here? Wire the relay to the "car side"? Then just ground that wire to the chassis? It wouldn't make a difference to Hook it to 10awg and hen hook to chassis would it?
#102
Evolving Member
so would I have to retune if I were to ground that wire?
#104
Evolving Member
i might just add the ground and keep the factory stage 2 pump power. But if I need to retune then I might just forget the whole thing.
#105
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Strictly my opinion: I think the retune is needed at the high end where your injectors are at its highest duty cycles. Although the pump will flow more once the relay switches to 14V, your low duty cycles won't be much richer than tune. For my car, I was hitting 104 IDC at about 6000-7000 RPM. With my overkill rewire, that's when my AFR dropped another 0.5 (from 10.7 to 10.2). You need to look at your tune and see what AFR it was tuned for.