More Pro Charger tuning Progress and AFR RAtios
04-15-2008, 07:05 AM
#51
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Mine was tuned in the boat. I needed to run that much base to get enough up top under boost. I'm golden.
04-15-2008, 07:44 AM
#52
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Does your fuel pressure rise and stay constant throughout the run?
Maybe your fuel plumbing is the issue. I run my main fuel line to an SX regulator then take the return from that to the FMU. The output of the FMU returns back to a T fitting at the inlet of the fuel pump.
Maybe your fuel plumbing is the issue. I run my main fuel line to an SX regulator then take the return from that to the FMU. The output of the FMU returns back to a T fitting at the inlet of the fuel pump.
04-15-2008, 12:44 PM
#53
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the anti siphon valves are in the fitting that your fuel line hooks to at the tank it might be a elbow or maybe straight. pull the hose off and unscrew the fitting from the tank and see if there is a check valve in it . if so the hole is only a 1/4 inch and has to lift the ball off the seat as well.
04-15-2008, 12:58 PM
#54
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So you have ECM tuning capabilities?
You have the mechanical ability to swap injectors?
Why in the world would you be still running a FMU? This is not 1985. 14.5:1afr that motor is a ticking time bomb. Also at 11:1 at low rpm and no boost you are just putting fuel into the crank case. Wow!
You have the mechanical ability to swap injectors?
Why in the world would you be still running a FMU? This is not 1985. 14.5:1afr that motor is a ticking time bomb. Also at 11:1 at low rpm and no boost you are just putting fuel into the crank case. Wow!
04-15-2008, 03:05 PM
#55
What color is OK ? how much boost are you seeing? What throttle body are you running?
04-15-2008, 03:15 PM
#56
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Thats whats fundimentaly wrong with procharger. Tuning the AFR by running the engine to different rpms and then shuting off and looking at the plugs. Thats seems so rediculess.
04-15-2008, 03:22 PM
#57
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Using the old ati regulator my plugs looked perfect but I was adding a QT. of gas to the Crankcase everytime I went out.
I think it normally takes 2-3 engines to figure out a procharger, Just ask me Jerry and Smitty!
I think it normally takes 2-3 engines to figure out a procharger, Just ask me Jerry and Smitty!
04-15-2008, 03:27 PM
#58
Sometimes you have to work with what's available. Add a wideband 02 sensor and run some data logs, add an aftermarket ECU, adjust whatever you want. Either way you'll probably want to varify AFRs and timing with plug readings.
04-15-2008, 04:48 PM
#59
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Jerry
I just pulled the fuel lines off at the tank. no anti siphon valves.
Kennyo
This is my second motor. The first one died before I had a chance to dig into this. I'd love to get this resolved 80 MPH is just not cutting it. My last boat ran 100+ w/an OB.
Thanks again to all for the input
04-16-2008, 01:00 AM
#60
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A 30 pitch prop and 1.36 drive is alot to pull,if your afr's are good at 60 psi (seems kinda low for a procharged motor) then a smaller prop is in order,Smitty
