Map reads 105 need help please

[ahmad96]

Hello


My map sensor reads 105kpa plugged and 10 kpa when it?s unplugged

Yes there is a hole in the intake
Yes I have tried 3 different sensors even the last took it from running camaro

I checked the harness and it looks perfect
Stock map sensor

2003 c5z
416ci
Ls3 Prc heads
102 fast intake
102 Nick William
Stock maf
Btr +400 nitrous cam



Please can you check the file and you are ok to fix it , I really appreciate your time and your help first tune2.hpt



It has been down for 3 months from this problem,,, I?m almost gonna throw some gas on it and burn it down

[5FDP]

You're overlooking something you did to your tune file and this is the exact reason why you are having trouble.

You applied the 2 BAR OS to this computer, doing so will automatically input a generic 2 BAR MAP sensor settings into the linear and offset settings.

So no matter what you do, it's always going to be wrong if you run a 1 bar sensor with 2 bar settings. Put the stock 1 bar MAP sensor settings back in and it will go back to normal.

If this was a NA build you should have just applied the 1 bar OS speed density OS.


Secondly, this 2 bar OS converts your Primary VE table to a 2 bar scale and populates the table with a huge number, in this case it's 432. It will never function correctly if you do not input your previous 1 bar data into this tune for 15-105kpa. Even if this will be mainly a MAF setup, the VE table should always be tuned, it's used for transient fueling. Again if this is staying NA, you do not need the 2 bar OS at all.

[ahmad96]

It’s N/A
The sensor is one bar (( the stock one ))

I’m understanding what are you saying but I got confused which table should I change

[5FDP]

Input the 1 bar linear and offset settings back into the tune file, then it will read the 1 bar MAP sensor correctly.

You need to fix the VE table as well before you run it otherwise it's not going to run great or much at all.

[cobaltssoverbooster]

It’s N/A
The sensor is one bar (( the stock one ))

I’m understanding what are you saying but I got confused which table should I change

so your application is N/A. is there a reason you are using the 2 bar enhanced mode? a stock 03 corvette OS for manual transmission applications is capable of 1 bar RTT SD and 1 bar RTT MAF modes.
there isnt a reason to ever go to 2 or 3 bar in na applications. usually i see someone working with an ecu that has already aquired the flash to multi bar before they got their hands on it which means it would need a factory reset in order to make the 1 bar options available again. maybe thats your case?

5FDP " Again if this is staying NA, you do not need the 2 bar OS at all."

this ^

[ahmad96]

hey guys

after i tried the map sensor begin to read but still not starting

i noticed in scanner (( fuel system #1 status not ready ))

btw way i cannot do anything with os to get it back to 1 bar
here is the last updated tune file if you can fix it first tune map issue.hpt104 data.hpl

[ahmad96]

Bump

[rpturbo]

Why can't you go back to 1 bar? Your going to continue to fight with yourself over this. If you lost the original file, I suggest getting another and re-licensing it. With a 2 bar os, your VE scale will be out of whack for 1 bar tuning and your resolution just won't be there. JMO