What in the heak is a FMU
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Joined: Jan 2003
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From: New Germany, MN
Car: 1986 Iroc
Engine: 5.3
Transmission: 4L80E
Axle/Gears: 9 Inch w/ 3.55
What in the heak is a FMU
Just curious what a FMU is. I know it has to do with superchargers. If someone could tell me what it does and what FMU stands for that would be great.
Thread Starter
Joined: Jan 2003
Posts: 949
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From: New Germany, MN
Car: 1986 Iroc
Engine: 5.3
Transmission: 4L80E
Axle/Gears: 9 Inch w/ 3.55
Does this take place of your fuel presure regulator? Cant your Fuel Presure regulator do it? Thats why the vacum tube is on it right?
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Joined: Jun 2000
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From: the garage
Car: 84 SVO
Engine: Volvo headed 2.3T
Transmission: WCT5
Axle/Gears: 8.8" 3.73
Originally posted by grover85
Does this take place of your fuel presure regulator? Cant your Fuel Presure regulator do it? Thats why the vacum tube is on it right?
Does this take place of your fuel presure regulator? Cant your Fuel Presure regulator do it? Thats why the vacum tube is on it right?
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Joined: Jul 1999
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Originally posted by SATURN5
No, No, it is inline with the return line to the tank. The vaccuum line reduces pressure. A stock FPR doesn't have a rising rate ability.
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Many, many threads discussing this..
No, No, it is inline with the return line to the tank. The vaccuum line reduces pressure. A stock FPR doesn't have a rising rate ability.
https://www.thirdgen.org/techbb2/sea...der=descending
Many, many threads discussing this..
-- Joe
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From: the garage
Car: 84 SVO
Engine: Volvo headed 2.3T
Transmission: WCT5
Axle/Gears: 8.8" 3.73
Originally posted by anesthes
All the GM factory ones will still rise with boost, just not as greatly as the FMU..
-- Joe
All the GM factory ones will still rise with boost, just not as greatly as the FMU..
-- Joe
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Joined: Jul 1999
Posts: 12,100
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Originally posted by SATURN5
Thanks Joe, I have never put a pressure gage on the line where I could see it under boost. Bob
Thanks Joe, I have never put a pressure gage on the line where I could see it under boost. Bob
-- Joe
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