well according to ups.com my new intake is sitting on my front porch... :jfj:
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well according to ups.com my new intake is sitting on my front porch... :jfj:
hmm a way to recoup some to spend on other upgrades. I did notice when looking up the suspected part number they were quite pricey on ebay. I have to txt the guy I got the LS injectors form to see what he originally had them in since his motor wasn't any where near stock.
here is the PN for the LS1 injectors I have 12555894 from what I can find on line they are 26.3 # @ 58psi. I'm thinking these may be the ticket
Have you measured the impedance of the 12555894 injectors?:popcorn:
dave w
11.8 +/- .1 which are the same as the marine ones (this differs from what I have read about on the marine injectors). I haven't double checked the part numbers on those yet because they are too hard to read installed. I plan on taking the intake apart this week so I can port match them to the gaskets like the heads are.
With six 11.8 ohm resistors in parallel, that is about 2 ohms. I think that is close enough to work with the '7427 PCM without modification. I don't have experience actually running the setup like your going to do, the math looks close enough. If you want closer to 1.5 ohms, you would need to install a 38 ohm resistor across the two injector terminal of all six injectors and connect the injectors in parallel.
dave w
after reading this I think I still will have to do the driver mod.
http://www.dynamicefi.com/InjectorDriving.php
Maybe, maybe not? Typically Dynamic EFI does not list the 16197427 PCM.
I would completely agree with the specifications for the ECM's listed on the Dynamic EFI website.
1227137 '86 Safari, Astro
1226868 '85 MonteCarlo
1227429 '86-'88 S10 2.8l
1227746 Truck
1227747 Many Trucks & Vans
1228062 Blazer
1228063 '88 Camaro, Firebird
1228746 '89-'92 Camaro, Firebird, Caprice
1228747 Truck
1228838 '90 Lumina, 3.1l
16136965 '91-'94 Caprice, Roadmaster wagon
16144288 Blazer
16146299 Truck
16149405 '93 Trans Sport, Silhouette, Lumina: APV, 3.1l
16171199 '94-'95 trucks, MT
16196391 '95-'95 Lumina, Trans Sport, 3.1l
16196396 '94-'95 trucks, MT
dave w
will it hurt to put a jumper across the drivers?
I don't have experience with doing the 6 cylinder port injector modification, so I can't answer if the jumper is needed or not. I'm thinking no jumper.
I have experience with is electronics ... with the injectors configured with the correct impedance the injector driver will be happy.:thumbsup: I found 33 ohm 50 Watt resistors at Newark http://www.newark.com/te-connectivit...50w/dp/18R0442 ($2.39 each). I would use the 33 ohm resistors across each 11.8 ohm injector, then wire the injectors in parallel to equal 1.45 ohms impedance on the injector driver. In a perfect world 38 ohm 50 watt resistors would be available, I could not find them with Google. Using an unmodified computer / unmodified memcal means having all six injectors fire at once, which works good. Electronically, I think this is a good plan.
dave w
55 watt that thing looks bigger than the injectors. defiantly going to have to make a resistor box, I probably could use a handy box with a project board. I also have an additional computer I can mess with so it can be tested both ways.