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hp tuners histogram help.

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Old Mar 17, 2016 | 10:35 PM
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From: fort macleod ab
Default hp tuners histogram help.

Ok so I'm trying to get my ve tables good.
I'm using Tuning 101 - Tuning for Dummies PLUS krambo's Idle tuning tips and tricks.
I'm completely new to tuning!

ok so here is what I did
in dtc shut off
-po101
-po102
-po103
set maf to to 0hz
Let truck warm up
Then I did a scan. Went to histogram to ltft and started driving and logging.
Here is my problem if it is a problem, All I'm getting is 0 in all the cells I hit??? so I went and looked at my maf and it was still reading so I unpuged it and scanned again same thing all 0.
whats going on. Is this normal?
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Old Mar 17, 2016 | 10:49 PM
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Make sure you arent logging it in the table display/channels.
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Old Mar 17, 2016 | 11:06 PM
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What do you mean tables?
What I'm doing is hitting the record button basically going into histogram then my table 3 which is my ltft and watching the cells fill with 0?
Where eles can I log it if not there and see what cells I'm hitting?
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Old Mar 18, 2016 | 12:01 AM
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I'm saying that if you are just trying to log VE only, you must NOT log anything MAF related. That can throw off all readings.

The table display or "Channels" are what you are picking to log, you cannot have anything MAF related there.

Past that I don't know what else. I never tuned my VE using the stft/ltft way I guess. I always had my wideband hooked up and used that to make corrections.
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Old Mar 18, 2016 | 12:09 AM
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Those three P codes need to be set to mil on first error. If it doesn't throw the p0103 code then it will not go to VE only if that makes sense.
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Old Mar 19, 2016 | 10:57 AM
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Ok that makes sense.
I have removed any thing maf related from the charts
And set those p codes to mil on first they where not on that.

I will try again and see if it works
Thanks!
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Old Mar 19, 2016 | 05:07 PM
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No luck took out everything maf related set all 3 to mil on first error enabled and disabled the p codes.
Tried all the 3 on mil on 2nd error
Its not wanting to throw the code!!!
Iv noticed it does not want to stall as much with the maf plugged in and runs better so I take that as the maf is still working no matter what combo I try.
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Old Mar 19, 2016 | 05:10 PM
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The MAF has the IAT sensor, so I wouldnt run it with it unplugged.

If you are still using 2.24, you can follow this closely. But 3.0 is still very similar. I followed this my first time and it worked like it should.

http://michigansnowmobiler.com/hptun...ons%20rev2.pdf
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Old Mar 19, 2016 | 09:04 PM
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Originally Posted by smoketrail
No luck took out everything maf related set all 3 to mil on first error enabled and disabled the p codes.
Tried all the 3 on mil on 2nd error
Its not wanting to throw the code!!!
Iv noticed it does not want to stall as much with the maf plugged in and runs better so I take that as the maf is still working no matter what combo I try.
Just to be clear, in the DTC's tab you have a check in the box for "SES Enable" for the 3 "P" codes? And they are set to Mil on first error, correct? Nothing should be disabled, at least I didn't. FFDP, please correct me if I'm wrong.
Like FFDP said, the MAF stays connected due to the IAT sensor.
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Old Mar 19, 2016 | 09:39 PM
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I had them all set to MIL on first error with the check box still checked.
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