Running MS 1 v2.2 with the 11c1 code.

Recently my 4 bar map sensor was having issues, it worked fine but all of a sudden the load % was about 20 below the map sensor kpa. These values have always been pretty close at atmospheric pressure. So thinking my map sensor was bad I put in the stock 2.5bar sensor and the map was reading 99kpa and load was 100%. Everything looking normal now I ran this setup for a few months till I needed to upgrade the sensor again. Bought a new 3 bar sensor and put it in. Same issue as before now. map is reading 99kpa and load is reading 81%.

The map sensor works fine so is this normal? I shouldn't have to rescale all of my maps from just changing the map sensor.

EDIT: Yes I changed the sensor to 300kps in megatune and the configure mode.

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i

I have never used the 3 bar sensor - only the stock 2.5 and 4 bar (with baro, which I am currently using).

I will have to queue up a load gauge, as I only use a MAP gauge, along with two digital readouts for vac & boost in TunerStudios.

For shits & giggles, have you tried loading up TunerStudios and seeing if the same discrepancy exists?

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2012 2500HD LML

Yea I opened up TS and load still shows 81% but the map sensor is now showing 86kpa. This stuff really makes no sense. I have used MS for prob ably 3 years now and still havent learned everything.

Guess Im just going to try and rescale my maps and then tune it from there. Im wanting to take it past 22psi.

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i

Hey bro, I added a quick LOAD gauge to my project and grabbed a screenshot for you:



As you can see, mine match. For troubleshooting purposes, try uploading a different firmware version and see if the problem persists.

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2012 2500HD LML

thanks man, Ill have to do some more trouble shooting to try and track it down. Ended up finding a blown turbo gasket so that takes priority to the MS issue. I just put the 2.5bar map back in it so I wouldn't have to change the maps.

Nice dash board btw.

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i

The only time Ive had an issue with it saying anything other than 98-100 when not running is when the sensor wasnt calibrated right. I have the 3 bar sensor and it was calibrated for 2.5, making my gauge read like 85% or so.

95 Eclipse GS: 10.5:1, Crower 2's and MSII
186 WHP - 150 WTQ
14.697 @ 93.85 MPH......Gone, but not forgotten
99 420A Avenger: Given to my sister
99 GS OZ: Sold
03 Evo 8: Family Car with balls

Yea I dont know what is wrong with it. Been looking at MS2 and removing the ECU as well. Its very tempting.

98 Eclipse GS Turbo
Built motor - MS2 - Holset hy35 - Zoom Stg 4 Clutch - 57.5mm TB - ARP Headstuds - Turbonetics wastegate - 3" Turbo back - FMIC - Greddy RZ BOV - Walbro 255 - 650cc Injectors - Fidanza Flywheel - Cobra calipers w/ 13" Rotors - Oil Cooler - DevilsOwn meth injection

1981 Chevy Scottsdale
1987 Nissan 300zx - Chump Car
2001 BMW 325i