First time doing a 2bar tune. I think my 2bar map is a 1bar. I need some help!!

[regorih]

Hey, guys, I need some direction on my first 2bar speed density tune. I've read tons and tons and I can't figure this issue out. So basically after looking at my data log I noticed that my MAP (KPA) keeps maxing out at 105 KPA and it's killing me because I know I have a 2 bar map sensor.

I bought this 2bar map sensor off eBay and it's an AC Delco #12615139 which should be good for @210 KPA (@15 PSI).

As you take a look at my WOT runs you will see that my MAP sticks at 105 KPA and over on the channels my "Intake manifold absolute pressure" sticks at 15.2 PSI.

So basically once my KPA maxes out I cant control fueling and the engine begins to lean out which I then get out of.


So my first official question is:

1. What am I doing wrong based on the description I provided.
2. Since this is a common map sensor people use, how do they control fueling once they exceed the maps capability? Example would be if my car was making 18 PSI.


thanks,
Roger

[SultanHassanMasTuning]

you can adjust in the scanner the high and low of reading anything

[regorih]

I thought that could of been the probelm but I went ahead and changed the max value to 200 and I still only saw 105 KPA max reading

[regorih]

Any direction would be appreciated.

Thanks,
Roger

[Bill@HPTuners]

The help files are very clear about this.

You need to delete the sae map pid and ADD the 2 bar map pid.

[regorih]

Thanks Bill, I'll look into this. My apologize, I overlooked the help files.

Roger

[HartRod]

Hey, guys, I need some direction on my first 2bar speed density tune. I've read tons and tons and I can't figure this issue out. So basically after looking at my data log I noticed that my MAP (KPA) keeps maxing out at 105 KPA and it's killing me because I know I have a 2 bar map sensor.

I bought this 2bar map sensor off eBay and it's an AC Delco #12615139 which should be good for @210 KPA (@15 PSI).

As you take a look at my WOT runs you will see that my MAP sticks at 105 KPA and over on the channels my "Intake manifold absolute pressure" sticks at 15.2 PSI.

So basically once my KPA maxes out I cant control fueling and the engine begins to lean out which I then get out of.


So my first official question is:

1. What am I doing wrong based on the description I provided.
2. Since this is a common map sensor people use, how do they control fueling once they exceed the maps capability? Example would be if my car was making 18 PSI.


thanks,
Roger

Do you have another part number for the map sensor? I googled the number you posted but can't find it for sale.

Edit: I think the last number was supposed to be a 6, not a 9. GM 12615136

[regorih]

Do you have another part number for the map sensor? I googled the number you posted but can't find it for sale.

Edit: I think the last number was supposed to be a 6, not a 9. GM 12615136

your car correct. I put the wrong part number.

Roger

[Jggregory99]

This may be a dumb question, but did you actually UPGRADE your OS to 2 Bar in the editor... Just installing a 2 bar Map does not automatically upgrade your OS.

[regorih]

Correct, you need to update the tune file to a 2 bar OS and do a complete write on the pcm. You also need to make adjustments to the map calibrations in the tune file.

Roger