I just got my turbo max back and its having some issues....
its starts to sputter at peak boost. i think its due to the fact that i am running to RICH... and the fmu is a 10:1. So my question is will a 8:1 be good... and where can i find one. Any info will be greatly appreciated

 

http://www.superchargersonline.com/p...2=fmu_cal_disk

 

do you have an upgraded fuel pump?

 

255 walboro pump

 

wat do u guys suggest... with stock injectors wa disk should i use... 8:1 7:1 or 4:1???

 

What you might want to do is go backwards and calulate how much fuel pressure would be required for a desired HP. There are tons of online calculators. Then decide what disc would get you that fuel line pressure at your given psi.

 

I would hate to assume your running rich and drop down a disk size, get less fuel then find out your actually running lean.

If you don't have a wide band then I would get to a dyno with a few different size disks and see which one is best.

It really helps to have an SAFC in conjuction with an FMU. When I was tuning with an FMU an 8:1 disk had me hitting 13:1 AFR close to redline but a 10:1 had me below a 10:1 AFR. Having the SAFC allowed me to tune in between the two.

In my case, at 5psi, a 10:1 disk, and subtracting fuel fuel via an SAFC worked. T

 

damn that picture looks good mike.... and yeah the SAFC was ordered sat waiting on it to come.... i just heard that the SAFC might not tune it down enuff.... and oh yeah gettin dyno tuned the 22nd . Thanx for the help........ But if that doenst work can u guys think of anythin else? cuz it really sux i cant even push it over 5k cuz its starts to sputter like crazy and it dont go no where

 

I have some 8:1 disks if you want to buy one. Just let me know


Jaime

 

thats lean. it happened to me when my aux fuel pump wasnt hooked up correctly.

pull your spark plugs. white=lean black=rich.

 

tilley did the testing for me and i have a A/f guage telling me i am rich