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.