7AFTE Build!, This friday. Options

[celicaST]

no a fmu is much different in the way it functions from a FPR...

how so? not trying to be a smartass, just want to know because everywhere ive read an rrfpr and fmu are just two seperate terms for the same device like pop and soda.

a fmu or fuel management unit increases the fuel persure as the boost increases where a fpr or a fuel presure ragulator only keeps the amount of fuel presure in the fuel rail at a set psi ,a adjustable fpr just lets you adjust the psi but will not raise the presure past the setting you set it at , where the fmu will raise the fuel presure x times the boost like a 12:1 will raise 12psi per psi of boost 5 psi would be 60psi of fuel presure + your setting of the fpr witch lets say it is at 50psi so at 5 psi of boost your are running 110psi of fuel in your fuel rail and that lets the injectors take more fuel but they will only take as much as the are rated for , hope that helps and if i got some thing wrong please tell me as this is what i was told and what i have read

ok so a fpr keeps the fuel line pressure at a set value. but a rising rate fpr is the same thing as an fmu correct? just different terminology.

[trd94]

no a fmu is much different in the way it functions from a FPR...

how so? not trying to be a smartass, just want to know because everywhere ive read an rrfpr and fmu are just two seperate terms for the same device like pop and soda.

a fmu or fuel management unit increases the fuel persure as the boost increases where a fpr or a fuel presure ragulator only keeps the amount of fuel presure in the fuel rail at a set psi ,a adjustable fpr just lets you adjust the psi but will not raise the presure past the setting you set it at , where the fmu will raise the fuel presure x times the boost like a 12:1 will raise 12psi per psi of boost 5 psi would be 60psi of fuel presure + your setting of the fpr witch lets say it is at 50psi so at 5 psi of boost your are running 110psi of fuel in your fuel rail and that lets the injectors take more fuel but they will only take as much as the are rated for , hope that helps and if i got some thing wrong please tell me as this is what i was told and what i have read

ok so a fpr keeps the fuel line pressure at a set value. but a rising rate fpr is the same thing as an fmu correct? just different terminology.

i am not sure about that one i never heard of a rising rate fpr , i have only heard of the adjustable fpr witch could be the same as a rrfpr because you can adjust the presure to differant psi rate but it will not change under boost like a fmu will , if you have a pic or something with some info it would help

[playr158]

good answers there guys

see below for RRFPR clarification

This post has been edited by playr158: Oct 10, 2006 - 5:31 PM

[trd94]

good answers there guys

i'm the RRFPR is still different from the FMU because the RRFPR is still a fuel line only thing I THINK

FMU is boost dependant

thanks ,

This post has been edited by trd94: Oct 10, 2006 - 4:42 PM

[presure2]

good answers there guys

i'm the RRFPR is still different from the FMU because the RRFPR is still a fuel line only thing I THINK

FMU is boost dependant

IIRC, the rising rateFPR will raise the fuel pressure according to boost, much like a FMU, just normally at a lower rate.
the stock toyota 3sgte FPR is a 1:1 rising rate fpr.

[playr158]

word thanks for clearing that up manny

[trd94]

yeah thanks manny

[Mynzeyes]

done. finally. details later. after i've rested some. i need a nap.

[trd94]

sooo...... any updates today , how is every thing going

[nate95]

OK WE HAVE A PROBLEM!! well the car is running great,, however... it will boost up to 4psi and run good,, but as soon as it hits 5psi its like the car is cuting off or somthing?? almost doesn't feel like its geting fuel, the car gets jurky and wont accelerate...any body know what to do about that??

[playr158]

stay at 4psi?!

[nate95]

ok, i think i might have figured somthing out,, tell me what you guys think,, when we got the new spark plugs we opened the gap up,, more than stock,, and someone now told me that they are suppose to be closed alittle more than stock for a turbo, other wise the turbo will just blow the spark out if it has to reach to far,, would that cause this problem?? cause it is almost like its missing..

any body know how many degrees to retard the timing by??

[jgreening]

other wise the turbo will just blow the spark out if it has to reach to far

As I understand it, there are two main problems with too much gap: (1) the spark may travel to something other than the ground electrode; (2) the electrode and insulator are exposed to higher temperatures. Ideally, you want the smallest gap possible to make your car idle well - under high revolutions, less gap will not be a problem.

[NuclearHappineS]

rrfpr and fmu are the same thing

fmu is just a fancy name that vortech probably came up with. if you look at begi fmu's they call them RRFPR's because technically that's what they are. Cartech also has them too.

[nate95]

here are some of the pictures guys!!



heres jack!



John installing the fuel pump.

[Shocker]

man that intercooler fits tight and even....

[trd94]

glad to see it up and running , i dont know if i would like where the ic pipe has to go over top the turbo ,that will get a lot of heat and might be a problem, i would of clocked the turbo and put it to the bottom , i would say your fuel presure still might be off a little , might have to adjust it a little

[Mynzeyes]

glad to see it up and running , i dont know if i would like where the ic pipe has to go over top the turbo ,that will get a lot of heat and might be a problem, i would of clocked the turbo and put it to the bottom , i would say your fuel presure still might be off a little , might have to adjust it a little

we clocked the turbo about 5 times trying to find the best way to go. true, it's not the best, but it was the best of our options. other places would have put it right into the block, or right into the radiator. the downpipe and other items were going to be in the way. a little heat wrap will cure it. and also, it's where the air is coming out of the turbo, so it's already super-heated anyway, as it hasn't gone through the intercooler. all-in-all, i think that's a pretty good route for it to go based on our options. could be better, sure, but at this point, at least it's running, boosting fine, and everything's kosher.

btw, nate got the boost issue worked out, but the problems are still existing with the boost controller. yeah, it's hooked up right based on a few other applications, but for some reason it's not controlling it. the check valves we used were not right for the application i guess, and so he swapped those, and now there is no boost cut at 5psi. so yay to that. i'm going to be uploading pictures either tonight, or tomorrow while at work, and i'll post some up, as i think we can call this project 99% officially done.

-John-

[Batman722]

how did you mount the IC ?

[Mynzeyes]

how did you mount the IC ?

There are 2 braces on the bottomside of the intercooler. They hold it very steady, but when the c-one bumper is on, the top of the IC rests on part of the opening of the mouth, and that holds it even more still.

Nate and Jack mounted that and ran the piping on Monday while I was at work, but I believe that's how it's on there. They had the bumper on by the time I got home.