2 bar map sensor Options

[jesterwr217]

ok im currently using check valves and im wondering what i have to do to put a 2 bar map sensor on just take out the map sensor and put the new one in and replace the check valves with regular vac hosing? and i have an safc 2 what do i need to change on it so my ecu isnt all screwed up? and if anyone has a link to somewhere i can buy one that would be great

[NuclearHappineS]

a 12:1 FMU at 8 psi is a fuel rail pressure of 136psi

you are NOT ok

The walbro you have (the TT version) is a LOW PRESSURE pump. That means if you run it for extended periods of time at those pressures it will fail, or at least fail to deliver the desired fuel and cause you to lean out ...

Furthermore, anything abouve 80-90 psi of rail pressure and you start risking cracking your injectors or having them stick open, unable to close under the pressure, which can wash out a piston from its oil coating and kill that cylinder ...

To be very clear... if you use an FMU, 5psi is your max and you must either use a high pressure walbro or use a regular low pressure in tank pump with a supporting inline pump ...

>> i have that exact setup the first one

you don't, be careful

my suggestion is find some injectors that are double your stock size, take out the fmu, put in the 2 bar and those injectors and you should be good to go at a more reasonable and safe 40psi fuel rail pressure with a matching fuel pump

[jesterwr217]

a 12:1 FMU at 8 psi is a fuel rail pressure of 136psi

you are NOT ok

The walbro you have (the TT version) is a LOW PRESSURE pump. That means if you run it for extended periods of time at those pressures it will fail, or at least fail to deliver the desired fuel and cause you to lean out ...

Furthermore, anything abouve 80-90 psi of rail pressure and you start risking cracking your injectors or having them stick open, unable to close under the pressure, which can wash out a piston from its oil coating and kill that cylinder ...

To be very clear... if you use an FMU, 5psi is your max and you must either use a high pressure walbro or use a regular low pressure in tank pump with a supporting inline pump ...

>> i have that exact setup the first one

you don't, be careful

my suggestion is find some injectors that are double your stock size, take out the fmu, put in the 2 bar and those injectors and you should be good to go at a more reasonable and safe 40psi fuel rail pressure with a matching fuel pump

if it were to lean out due to the fuel pump wouldnt i see it on my wideband??
and which exact parts are u suggesting like injectors? i have the lime green top supra ones

This post has been edited by jesterwr217: Aug 8, 2007 - 2:41 AM