also didnt mention that my fuel pressure is now reading almost 100psi.
there is only one way to hook them up at the rail. where the fmu lines attach to the FMU they are the same. at the bottom at the fmu they are hooked up backwards, not at the rail and fuel line.
thanks man u were right. i wasnt thinking under the fmu, because i assumed they were right. i swapped them around and my fuel pressure is now at about 60psi at idle, and the a/f is a little leaner. a/f bounces back and fourth between 12 and 14ish at idle now. so il try and bump fp down now to make it more optimal at idle. il tell u tho its idling crappy. it goes up and down and tries not to stall. wen i first started my car with the 42's and pro m, it was the first time i started the car in 6 months, also had a dead battery for all that time. it was idling alittle high for that first startup. but after idling for about 10min till i got heat in the car the idle dropped back down to normal and idled like a champ. everytime starting the car after that the idle was always dead on 750rpms. but now swapping back to stock injectors and maf, the car tries not to stall out. should i disconnect the battery for like 20min to reset the computer to make it idle better?
back in 1996 when i got my first vortech, i hooked up the FMU lines backwards like that. thats why when you said it had 100lbs of FP i had a pretty good idea what the problem was. dead heading the pump at 100 psi might have trashed the fuel pressure regulator, so that might need replacement. or if its adjustable turn it down. you can pull the vacuum line off the regulator on the back of the rail and if the diaphram in it is trashed itll likely be spitting fuel up through the vaccuum port.
pull the vacuum line off the regulator with the engine running, and if its not spitting fuel out of it then its probably fine.
I ran a Powerdyne before on my old 93 GT, it worked quite well with the 19lbers/FMU. Ran times in my sig.
Where u running a stock MAF sensor also? if so did it give u problems? I think mine is the reason why my car is idling so ruff, but i dont understand it. the fmu is hooked up right, the fp is now set at 40psi at idle. When i first start the car it seems to idle smoothly but after about 2 min of idling it starts to idle ruff going up and down and eventually stalls
I was using a 70mm Cobra maf, but even with the stock 55mm it was fine. Do you have a bypass? It almost sounds to me like you are having issues with unmetered air entering. If you have a bypass check all the connections. Post up some pics if you can.
These issues are only AFTER the supercharger install?
the car was parked for about 10 months, until i started it. the first time i started it after so long i did start it supercharged. that was with the blow through intercooled setup that had the 42s, pro m meter, and tial 50mm bov. it seemed to run fine, the idle was very smooth like always, and it felt like it deffinitly had some power while driving around the block. only thing i didnt like was it was too rich a/f 10.8 at idle. i know i needed a tune, but with xmas around the corner i dont have the cash to get one right now. so i figured id try the stock injectors w/ fmu cause i had it lying around. right after i swapped the setup thats when it started acting up.
ill tape a video of it running tomorrow
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