What Ratio FMU to use???

[SilviaSlydSydway]

Hey Guys...I need to get an FMU for my turbo setup. I have the Nsport Turbo Kit and i am pretty sure it came with a 7:1 FMU to run 7psi from the wastegate spring that came with the kit. I ran a SAFC, but i had to give it back to my friend. I am fixing the car to sell, so i'm not worried about going full out with with Tuning. I was wondering if anyone could tell me for sure if the kit came with a 7:1 or what you think I should use. I would rather be a little safe that sorry, so i was thinking about getting an 8:1. If it helps, the turbo is a T04B. The a/r is .63 and the turbine is .58. And yes, i have stock injectors back on.

[Jookmasta]

at the very least, 8:1...........ive heard some peeps using 10:1 but i would suggest 8:1. please watch the a/f's on a dyno or with a wideband though.

[WDRacing]

For low boost a 7:1 or 8:1 won't matter. Don't push more then 8lbs of boost though. You should be ok, if you want some added safety, just retard the base timing a couple degree's.

WD

[C-Kwik]

Run no more than about 7-8 psi of boost using a FMU. 7:1 is pretty minimal for this boost level. But unless you have a fuel pump that can flow more at higher fuel pressures then, going to a higher ratio FMU won't do much good as the fuel pump will likely limit the max pressure.

[SilviaSlydSydway]

Yeah i have a walbro and i'm only going to be 7psi at the most. And i was going to retard to ~15 degrees.

[crzycav86]

That's a pretty big turbo to be using an fmu with.

[C-Kwik]

I had a T04B with a H trim wheel and .60 compressor A/R, and a .69 turbine A/R (I forget the turbine trim) with a 8:1 FMU and it worked fine.

[SilviaSlydSydway]

Ok Thanks alot guys. Now does anyone have a 8:1 FMU that they want to sell me?

[WDRacing]

I have one for sale, $70, its brand new. Look here for everything I have up for sale. zerothread?id=226921

[SilviaSlydSydway]

How much do you want shipped to 08234?

[WDRacing]

$80 and I'll ship it tomarrow UPS. PayPal me at [email protected]

[SilviaSlydSydway]

Paypal Sent

[WDRacing]

Will send as soon as it clears

[nissanfanatic]

I had a T04B with a H trim wheel and .60 compressor A/R, and a .69 turbine A/R (I forget the turbine trim) with a 8:1 FMU and it worked fine.

Word up... Same here... P trim turbine. I logged 12-12.5 AFR...

[WDRacing]

Everyone used to run a FMU when they started out back in the day. I don't understand where this idea that they don't work came from. Granted, its for a low boost setup. But it's retarded easy and works pretty well. The fastest Maxima in the US ran a FMU...

WD

[SilviaSlydSydway]

I just have to double check on how to install it. I read somewhere that the side port is feed and the bottom is return, but what about the feed to the stock FPR. Please enlighten me. Thanks

[WDRacing]

[SilviaSlydSydway]

THANKS