the ms3x im asking about is a Braineack built MS3X thats almost 10 years old now, , i have upgraded to the mapdaddy 4 bar MAP in the case and added FET drivers for the AUDI coils in 2022

I've been running into tps accel/decel trigers keeping it from going into closed loop and causing poor idle and are not allowing it to lean out during cruise. The throttle signal stays solid on the gauge but when i go into the accell enrichment the tps and map signal is all over the place. I checked the ground and it tested good, I ran a new jumper back to the ecu and it made no change. It happens if the engine is on or off. I hooked it up to the snapon scope at work and found the spikes that are triggering the accel/decel are directly related to the 5v reference voltage spikes. The map signal is noisey but for some reason isnt triggering the enrichment even though the thresholds are the same. i checked the 5v signal to the IAT and CLT and it matches what i have at the TPS.

Im having trouble locating the assebly guide to see if i can open up and test the 5v ref circuit in the ecu itself and repair/replace it if needed. Does anyone have a link to the assembly guide?

 

https://www.msextra.com/doc/pdf/html...dware-3.4.html

https://www.msextra.com/doc/pdf/html...e-3.4-172.html (schematic)

 

I saw that for the 3.0 but I thought it said 3.57 on my board when I was adding the mapdaddy. Does the 3.0 board have the exact same component arrangement as the 3.57? Ill double check the board when i get it out.

EDIT:
If they are the same I would assume I would more than likely be having an issue with one of the filtering caps? Would it probably be a good idea to replace C16, C17, C18, U5, D9, all at the same time?

 

I pulled the MS out looks like it is a 3.0 board. i was confused cause the MS3 board has surface mount components. Thank you for your help!