Results 1 to 2 of 2

Thread: MAF tuning issues need some help

  1. #1
    Potential Tuner
    Join Date
    Sep 2012
    Posts
    1

    MAF tuning issues need some help

    I am going to try to explain this the best I can Im not an HP Tuner expert just know a little here and there.

    I have a 01 WS6. This car is a heads/cam car as follows:
    232/236 586/587 114lsa
    Trickflow ported 220's 59cc
    Harlan Sharp 1.7 Rockers
    7.4 Push Rods
    Trick Flow dual springs
    92/92 Intake
    And your basic lid,longtubes,catless mids, and exhaust.

    Car ran great for a while until this year started noticing I was having some idle issues when the weather started getting colder. And also noticed just smell of raw fuel sometimes. So I had a second opinion on my tune from another tuner and turns out some things he didnt think my V/E table was correct but wouldnt know until he could run the car and see what it was doing. Basically what it has been doing is during the day car will run fine with the heat of the day. But as soon as its been getting dark and chilly at night it changes. If i am slowing to a stop and put it in netural to let it idle before I get to a stop the car wont adjust and car will just die. Once I fire it back up I have to give it a little gas and finally will come back and run and idle perfect until I do the same thing over and over again.

    This brings me to Saturday car ran fine when first started until I made a stop and it died every single time I stopped. I have HP tuners so I said I need to scan the car and see If I have any hidden codes. Well turns out I had a P0103 MAF code. I cleared the code and car ran fine for a little and then code came back. Me thinking I had a bad MAF I went to buy a new one. Cleared the code and it came back. Car started doing same all over again. But did notice once the plug was not hooked up it would run fine.

    So this brings me to Sunday evening I brought the car out and had HP with me and had someone who knows a little about it to see if where we can find the MAF info in the program. So we went into the catagory and seen this.



    Now correct me If I'm wrong but shouldnt there be a value in there and not 0? And is there suppose to be values in the Maximum Airflow Delta chart? If so how do you get them?

    I was alerted of this by my friend so we changed the value to 12,000. Turns out code went away and car ran awesome!

    But then I got another code right off the bat. P0101 which is that value box right below that. Now I know 100% I was not tuned speed density otherwise my tuner would have told me so. But from what i gathered thats the way it looked as my MAF was shut off. I never messed with it ever since the tune was done which was last year and didnt even know where the MAF settings were as I had to ask where to go inside HP to get into this.

    Car as of now will idle sometimes when coming to stop and sometimes it wont. As far as someone asking me to go back to my tuner well he kinda disappeared on me and have no way of contact at this point and am ready to seek someone new to see if this problem can be fixed in the tune or what needs done. So any advice or help in changing values in HP would be greatly appreciated to me and my car! I cannot contact the person anymore who did the tune.

    Thanks for your time in reading this matter

    Chris
    Last edited by 2001WS6; 09-24-2012 at 06:59 PM.

  2. #2
    Advanced Tuner
    Join Date
    Apr 2009
    Posts
    613
    Time to dig in or find someone to retune it. First thing I would do is compare it to a stock 01 file and see what other things are screwed up.
    1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
    - 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger