MAP sensor location

[Kamil S]

Hey engine gurus, I was wondering if I could get some help on this. We're running naturally aspirated with a 1200cc straight plenum, duct to the side.

I did some readings on where the best location for a MAP sensor would be, but I felt most applications weren't close to FSAE style.

Also found this amazing post on MAP vs. TPS sensors (http://fsae.com/eve/forums/a/tpc/f/125607348/m/31910813511/r/29210923511#29210923511), but not much help there.

Any ideas?

[Kamil S]

Hey engine gurus, I was wondering if I could get some help on this. We're running naturally aspirated with a 1200cc straight plenum, duct to the side.

I did some readings on where the best location for a MAP sensor would be, but I felt most applications weren't close to FSAE style.

Also found this amazing post on MAP vs. TPS sensors (http://fsae.com/eve/forums/a/tpc/f/125607348/m/31910813511/r/29210923511#29210923511), but not much help there.

Any ideas?

[VFR750R]

THought about taping the plenum in multiple spots holding the engine at steady and looking at the signal. I would imagine that any place on the plenum is good, but if I had to pick a spot, it would be opposite the inlet where the air speed is effectively stagnant.

I also didn't realize we were making things so hard on ourselves using a MAF.

[drivetrainUW-Platt]

why do you guys run a MAF?

Just make sure that yoru map sensor isnt anywheres near high velocities like next to runners or your restrictor, if the velocity gets fast enough it will do some skrewy things to the readings

[Bill Kunst]

They are predictableconditions in high velocity air streams, sort of like old scientist (eventually they die). But some jackhole Bernoulli came up with the theorem that you should know and pay attention to in the mounting of a MAP sensor.
Bill

[VFR750R]

We were using a MAF long before I was a team member, and mostly we never questioned it, it was always how do we adjust that baseline fuel setting based on what's going on like accel, boost, throttle position ect. We liked it because if you changed the volumetric efficiency in any way cam, port, header, throttle, it keeps A/F constant.

[VFR750R]

Almost forgot. Also has the added bonus of telling you if you did get higher VE by being a very accurate air flow meter.