Engine guru's/ fuel injectors
#41
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the eliminator is a better choice but the ouput still drops signifigantly at 75 psi,its what I'm running,but I also boost the voltage to 15-16 volts to make it put out more,I would have just bought the pro series but its not a constant duty pump and I was worried it would overheat or put out too much at idle,Smitty
http://www.aeromotiveinc.com/product...atsub=1&prod=2
go to specs to see its rating
http://www.aeromotiveinc.com/product...atsub=1&prod=2
go to specs to see its rating
#42
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Do it once, no cables, no boosters, no add on drivers, stock alternater. One ECU, one pump, one regulator, correct sized lines and injectors, DONE. Fast Ecu, weldon 2025 pump, weldon regulator, 72 lb injectors, 10 an lines, 100 micron pre filter, 10 micron filter before injectors. Have the dealer install a start and run program, finish tuning on the dyno and on the water. Most aftermarket ECU's have a wideband 02, you can set your a/f ratios,run data logs, and map your timing for what works best for your application. Any future changes you make to the engine can be accommodated with a laptop and a few key strokes.
#43
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Do it once, no cables, no boosters, no add on drivers, stock alternater. One ECU, one pump, one regulator, correct sized lines and injectors, DONE. Fast Ecu, weldon 2025 pump, weldon regulator, 72 lb injectors, 10 an lines, 100 micron pre filter, 10 micron filter before injectors. Have the dealer install a start and run program, finish tuning on the dyno and on the water. Most aftermarket ECU's have a wideband 02, you can set your a/f ratios,run data logs, and map your timing for what works best for your application. Any future changes you make to the engine can be accommodated with a laptop and a few key strokes.
#44
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"Dick,with your electrical experience you ought to design a "conversion box" that allows guys with mefi ecu's and cheap aftermarket fuel injection systems like the holley/accell to drive low impedance injectors. It would be interesting because there are quite a few guys like me who would be running bigger injectors but are limited to the 60/63 lb siemens that are available,Smitty"
Smitty, I am in the process of researching that at this moment. Circuit boards are being built by a guy in Canada as we speak.
Is the Mefi sequiental or batch fire? Does it have any idea what is on the driver output. If it can tell there is a load change on the injector output then that has to be dealt with. But this is doable.. small self contained Peak & Hold Driver box.
Dick
Smitty, I am in the process of researching that at this moment. Circuit boards are being built by a guy in Canada as we speak.
Is the Mefi sequiental or batch fire? Does it have any idea what is on the driver output. If it can tell there is a load change on the injector output then that has to be dealt with. But this is doable.. small self contained Peak & Hold Driver box.
Dick
#46
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I went to their web site, but couldnt find it.. too difficult to search.. Any idea what the number is on that box GPM? I would be interested in the price on it.
Dick
Dick
#47
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They were available at Summit and Jeg's a while ago, I beleive they were around 400.00. Check with Earl at Kinsler Fuel Injection. AEM makes one, part number, 30-2710, 349.85www.aempower.com/ViewCategory.aspx?CategoryID=83 AEM driver module on Ebay for under 300.
Last edited by GPM; 03-16-2008 at 09:03 PM.
#48
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Mr Gadgets,
The MEFI batch fires.
They don't seem to have a problem running at 85% duty cycle.
The way around the injector problem is to run more of them. That is one reason I like Whipples so much. Besides the fact that they are bas a$$ blowers, a single 3.3 only holds 8, but a quadrotor holds up to 12. I run 10 until around 1400 hp, after that you need 12. Haven't had a problem with the driver crapping out from running 6 injectors each yet. If I run a roots or PSI, I make my own injector plate to sit on top of the blower and put as many injectors in it as needed. I have seen guys add injectors through the side of an intake ( under the carb pad on a blow through) and only turn them on while in boost in order to have enough fuel.
Eddie
The MEFI batch fires.
They don't seem to have a problem running at 85% duty cycle.
The way around the injector problem is to run more of them. That is one reason I like Whipples so much. Besides the fact that they are bas a$$ blowers, a single 3.3 only holds 8, but a quadrotor holds up to 12. I run 10 until around 1400 hp, after that you need 12. Haven't had a problem with the driver crapping out from running 6 injectors each yet. If I run a roots or PSI, I make my own injector plate to sit on top of the blower and put as many injectors in it as needed. I have seen guys add injectors through the side of an intake ( under the carb pad on a blow through) and only turn them on while in boost in order to have enough fuel.
Eddie
#49
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I wish I would have known this 4 years ago,I would have converted my set-up to low impedance injectors,thanks for the info. I love these intense discussions,everyone learns something they didn't know before,Smitty