Question about FMU

[240RB1]

hi to all i am starting on getting all of my stuff together to start boosting the single cam here are some specs

Great running KAERB25TurboEbay intercoolerCustom made log manifoldcustom oil lines and oil drain line2.5inexhaust FMU 8:1?HKS ssqv BOV

I am going to be using an fmu for the first time because all the other tuning ways are overwhelming for a novice so thats why im going FMU.

Do you guys think that a 8:1 is enough for a RBturbo? its rather big it is a T3 turbo specs are somwhere i dont have them on me at the time i will post them in a minute when i find them thanks and have a good day

[480sx]

8:1 is what you want. Dont push more than 7-8 psi on a FMU setup, retard your base timing 2-3 degrees and enjoy.

[240RB1]

Thanks 480 for the quick reply

Heres some specs that i found courtesy of AutoSpeed

The RB25DET turbocharger employs a 60mm compressor inlet and a 38mm discharge nozzle. The compressor housing is identified with a 0.40 A/R. On the exhaust side, the turbine inlet passage is 65 x 45mm and the mounting flange measures 110 x 70mm. The turbo connects to the exhaust manifold with 4 bolts and the dump pipe is attached by 6 bolts.

[nelson8708]

might want to put a walbro 255 on that list just incase but, yeah, pull a couple degrees and dont run more than 8psi. My first setup was t25, smic, fmu, walbro, and pulled a couple degrees. Daily drove her for a year and a half no problems.

Glad to see another single cam getting boost.

[240RB1]

i guess i should get a walbro since a 18+year old pump might be worn out i will start my own thread later when i start fabbing the manifold.

[480sx]

Its not a you should thing, its a you have to thing. Stock FPs suck, especially with a FMU where your asking your pump to create close to 100 psi of pressure at times.

[s14tan]

Don't mean to thread jack, but what FMU is ideal for a T3/t4 .50?

OP: Good luck with the set up and Enjoy your boost.

[480sx]

8:1 heh. Having a wbo2 would always be nice for any turbo setup but an 8:1 seems to work for most people.

[abc123omg]

liek they all said, walbro, pull a few degrees, and 8:1 fmu and youre good to go!

[SullivanRacing06]

hi to all i am starting on getting all of my stuff together to start boosting the single cam here are some specs

Great running KAERB25TurboEbay intercoolerCustom made log manifoldcustom oil lines and oil drain line2.5inexhaust FMU 8:1?HKS ssqv BOV

I am going to be using an fmu for the first time because all the other tuning ways are overwhelming for a novice so thats why im going FMU.

Do you guys think that a 8:1 is enough for a RBturbo? its rather big it is a T3 turbo specs are somwhere i dont have them on me at the time i will post them in a minute when i find them thanks and have a good day

yes the 8 to 1 will be fine for your app, dont forget to install a walbro 255 pump aslo. need that with the extra fuel pressure for a added security measure, ur using a rb25 turbo correct? nice sized base t3 turbo, 75-7psi will be perfect fpr the turbo on your ka