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The ECM will throw a silent code for that sensor with the 330 map. Not sure how necessary it actually is - probably just some kind of minor altitude fuel trim for emissions. I've never had anyone say they noticed a difference with or without it. As you go up in power, more fuel is required and...

The pressure spec doesn't tell the entire story since it doesn't say if that's gauge pressure or absolute pressure - referenced to sea level or referenced to outer space...... but seems like it's certainly gauge pressure given the max reading. CAT changes part numbers like most people change...

Here's what the TM shows - both of the sensors are referred to as " SENSOR,MANIFOLD ABS" :cautious: 🤷‍♂️ Definitely would be good to figure out the exact part number for you 3126b guys. I just tell customers to go to CAT and give them a 330 HP serial number off an engine sticker from a...

Yeah the TM is not super clear on which one is which. Ultimately it's best to order it from CAT with the serial number of a 330 HP engine, etc.

TM shows it as a 194-6723

It's a piggyback - it sits between the engine sensors and the ECM. It tells the ECM that the fuel pressure is lower than it actually is, so the ECM will command a higher fuel pressure thinking it's too low. This creates additional wear and tear on the fuel system that is now running a higher...