Good evening everyone. I am looking for some clarification.

First off yes I am new to HP tuners so I apologize in advance.

I am helping a friend with a 70 Challenger with a Hellcrate.

We pulled the car apart for a cage installation and while we were at it I cleaned up a bunch of wiring. Installed a modern switch panel for the NOS and components as well as line lock, tranny brake, water meth that type of thing.

The car was a running driving car and thankfully after many hours of wiring, it still is.

But we are a little confused. I am showing 4 different MAP readings. I would really like to understand what is going on here.

On the List tot eh left there are 2
The first one reads
the second appears to be running the atmospheric minus vacuum at idol.
The one on the graph makes no sense at all. It flashes between 6200kPa and 700 ish on my friend's laptop. (on my laptop it is stable at around 1100-1200Kpa I don't understand that)
The one on the Spark advance is reading at 105kPa

Thank you for your time.
Dave

Startup and idle.hplbase tune.hpt