07-01-2008, 01:35 PM
^^ Ditto on the 12v.
You dont need to worry about installing the 255 UNLESS you have heard about "overrun". I dont know if this is common on supras, but many stock return lines or fprs, cannot deal with a 255 at idle, and will not properly control it allowing fuel pressure to run high and cause an overly rich condition at idle, but not at cruise or acceleration where there is enough flowing into the injectors that not that much fuel is being returned.
A dying fuel pump is a hit or miss. If it dies immediately instead of going weak, your car will just shut off, no damage, itll be like you were engine braking (because literally thats how your car engine brakes). If it becomes weak, your computer will think its still sending the right amount of fuel and will cause a lean condition.
Oh and installing the fuel pump in the parking lot is fine, we did jason's fuel pump in just a few minutes (minus the drive over to ET because the fuel pump we got sent was for a 1g, not a 2g).
You dont need to worry about installing the 255 UNLESS you have heard about "overrun". I dont know if this is common on supras, but many stock return lines or fprs, cannot deal with a 255 at idle, and will not properly control it allowing fuel pressure to run high and cause an overly rich condition at idle, but not at cruise or acceleration where there is enough flowing into the injectors that not that much fuel is being returned.
A dying fuel pump is a hit or miss. If it dies immediately instead of going weak, your car will just shut off, no damage, itll be like you were engine braking (because literally thats how your car engine brakes). If it becomes weak, your computer will think its still sending the right amount of fuel and will cause a lean condition.
Oh and installing the fuel pump in the parking lot is fine, we did jason's fuel pump in just a few minutes (minus the drive over to ET because the fuel pump we got sent was for a 1g, not a 2g).
2020 Ford Raptor
2009 Z06
1986.5 Porsche 928S
2009 Z06
1986.5 Porsche 928S