Results 1 to 4 of 4

Thread: 2008 Dodge Avenger 2.0

  1. #1
    Potential Tuner
    Join Date
    Oct 2022
    Posts
    3

    2008 Dodge Avenger 2.0

    Disclaimer: I am a total noob what comes to tuning EFI cars.

    I have a HP Tuners MPVI2+ and a 2008 Dodge Avenger with a 2.0 engine (basically a de-stroked version of the 2.4 engine and very closely related to the Mitsubishi 4B11). Manual gearbox.

    Mods:
    -Ported head, static compression 11,1:1
    -Mitsubishi Evo X Piper cams 264/240 advertised duration
    -Custom 4-1 exhaust header with 1 3/4 inch pipes
    -2,5 inch exhaust, 100cpsi cat
    -K&N panel filter and airbox modified
    -AEM Uego wideband
    -Bosch 267cc (@43,5psi) injectors. Stock are 252cc @ 43,5psi
    -NGK Iridium plugs, stock heat value

    Problems:
    -Violent jerking between 1000-2500 rpm at light load (TPS under 30% or so)
    -Runs very rich at light loads (wideband showing 11-12 afr, false or real rich?)
    -Runs very lean at WOT (seems to target stoich, running 14-15,5 afr)
    -Stalls after steady driving when the clutch is pressed in

    Where should I start with the HP tuners? Already tried tuning lambda maps and got WOT okay but it made everything else worse. Now back on stock tune.

    It only has a MAP sensor, no MAF. I am using 98 RON gas (92,5 AKI (USA) octane), 5% ethanol.
    Last edited by Lippi; 10-20-2022 at 01:48 PM.

  2. #2
    Potential Tuner
    Join Date
    Oct 2022
    Posts
    3
    Also tried reducing and increasing light load ignition advance, both made it worse. Should also the higher load advances be reduced? Can post the stock maps if that helps.

  3. #3
    Advanced Tuner rays04gtx's Avatar
    Join Date
    Oct 2021
    Location
    Allentown PA
    Posts
    363
    do you have stock and Modified tune files ? I'll be honest here, I don't have a clue as to how to help, but if I see the files I can try give some guidance
    62 Biscayne 425/409 SS/D stock class car 10.60s
    66 Dart 426CIG3 8.60@171 2750lbs Naturally asperated
    04 Ram All Alum , 468Ci G3 10.50s @4800 lbs Naturally asperated
    04 Rumble Bee, built 6.1 ,4000lbs 10.48 @ 129s MPH. Naturally asperated
    05 Rumble Stock 5.7, 3.92s TUNE ONLY 13.94@98mph

  4. #4
    Potential Tuner
    Join Date
    Oct 2022
    Posts
    3
    2961869F-2C0E-4072-9893-E22C45578510.pngOnly had a photo of the stock spark map at the moment, will attach the other maps tomorrow. Or the full tune files if that’s helpful.

    Edit: Won’t let me post the photo. ”Invalid file” although it is a .jpg

    Edit2: Attached the image compressed (poor quality) so it worked
    Last edited by Lippi; 10-23-2022 at 04:42 PM.