Is Fuel Cut Programmed or Sensored?

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LegacyT
Fourth Gear
Posts: 1220
Joined: Mon Oct 21, 2002 9:53 pm
Location: Ottawa, Ontario, Canada, Now Sioux Lookout

Is Fuel Cut Programmed or Sensored?

Post by LegacyT »

If I install a larger fuel pump and raise the boost in my Legacy turbo will the ECU still intiate fuel cut at the usual 13.5 PSI of boost even though its getting enough fuel? Or will a sensor detect that the mixture is good and not initiat fuel cut even if I'm running above 13.5 pounds of boost? What about boost cut? If they are programmed at a specific boost level how do I bypass them?

Thanks,
Mark
1991 Turbo Sedan, Aspen White 5MT, Sold RIP
1994 Turbo Sedan, Crimson Pearl 5MT, from British Columbia-no rust!
morgie
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Post by morgie »

as i understand this, the ECU will cut fuel when it reads 13.5PSI from the boost pressure sensor.

You can search on the internet for a FCD (fuel cut defender) and ask a friend to weld that little circuitboard.. it's pretty simple electronics.
morgie
'98 4Runner V6 Manual 4x4.
LegacyT
Fourth Gear
Posts: 1220
Joined: Mon Oct 21, 2002 9:53 pm
Location: Ottawa, Ontario, Canada, Now Sioux Lookout

Post by LegacyT »

what about those Autronic Engine managment systems, will one of those fix the problem?

Mark,
1991 Turbo Sedan, Aspen White 5MT, Sold RIP
1994 Turbo Sedan, Crimson Pearl 5MT, from British Columbia-no rust!
morgie
Third Gear
Posts: 743
Joined: Wed Oct 30, 2002 12:55 am
Location: Quebec City / Canada
Contact:

Post by morgie »

Building an FCD is about 10$ in electronics + around 1hrs welding and assembling... hard to beat that price !! :)
morgie
'98 4Runner V6 Manual 4x4.
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