analog input to datalog fuel pressure?

boostedcivicsir · Post by **boostedcivicsir** » Wed Sep 05, 2007 7:32 am

i know i need an 8bar 5 volt pressure transducer, but can the s300's analog input be used with that to log fuel ressure? all i would need is the scaling like the wideband correct? meaning 0v= 0psi and 5v= 100psi so on and so forth. i know there is one or 2 things needed to be done to the board though.

i was having problems with my fuel system and i think i have it nailed down now, but would like to know if my pump is dropping off up top, not that it is now but would like to see if there is any decline in performance.

thankyou.

Post by **Spunkster** » Wed Sep 05, 2007 9:50 am

It may work as long as you can figure out the pressure snesor, wiring and calibration data. It may just be easier to get a fuel pressure gauge though.

boostedcivicsir · Post by **boostedcivicsir** » Wed Sep 05, 2007 11:33 am

you are probably right but it is kinda hard to stare at goin 140 plus. he hee

locash · Post by **locash** » Fri Sep 07, 2007 7:42 pm

What the foolish spunkster meant to say was "get a fuel pressure gauge and a video camera to record it." :) But in all reality, yes, you should be able to use the analog input with a 0-5v 150 psig pressure sensor and datalog it, at least thats my plan as well. :)

boostedcivicsir · Post by **boostedcivicsir** » Tue Sep 11, 2007 7:34 am

locash wrote:What the foolish spunkster meant to say was "get a fuel pressure gauge and a video camera to record it." :) But in all reality, yes, you should be able to use the analog input with a 0-5v 150 psig pressure sensor and datalog it, at least thats my plan as well. :)

was talking to evans, he answered that on honda-tech.com and said the 150 psi aem sensor will work.

thanks fellas.

no more hillbilly datalogging for me. did that last year had my camera strapped to my roll cage he hee.

boosted hybrid wrote:Run the aem 0-150 psig sensor for the fuel pressure. The voltage vs pressure chart should look like this:
Voltage: Pressure:
0.5 0.0
1.00 18.80
1.50 37.50
2.00 56.30
2.50 75.00
3.00 93.80
3.50 112.5
4.00 131.3
4.50 150.0

Its a linear scale, so it interpolates on the chart to get the reading. I just set up fuel/oil pressure on a customers car with the AEM 0-150psig sensors and it works well.

planetspeed · Post by **planetspeed** » Tue Sep 11, 2007 6:09 pm

I think it would be better if you can scale a 0-5v with 0-100psig sensor. You don't need more than 100psi on your fuel system..
Just my two cents..

boostedcivicsir · Post by **boostedcivicsir** » Tue Sep 11, 2007 6:53 pm

true. they are the same price, may be a thought.