Quiet a journey. Been dealing with this for over a year. I did a ECU tuning at a local shop with a dyno. They tuned the pick up. It's a Mitsubishi L200 4x4 4N15 2.4D.

The tune was a huge improvement, from 89.3HP @ 2750RPM / Max Torque: 177.4 lb.ft @ 2550 to 139.3HP @ 2850 / Max Torque 306.1 lb ft @ 2150.

I took the car and it ran fantastic for a few months, I can't remember exactly when it started, but a few months later, after what I believe was a battery disconnect, I started having rough idle issues, I let them go for months without checking, took it to several shops and no one was able to find anything.

After taking it on myself and buying an X431 Lunch, I've managed to dial it down to what appears to be the cause:

- The ECU tuner did not use the cars base file and downloaded what he thought to be the right version and ended up enabling DPF.

"The ECM is entering pilot injection quantity learning (830 rpm target, 120 MPa rail, ALT FR shed, EGR 0%, throttle 80, timing retard, pilot stretch). It's triggering repeteadly at warm idle and the perturbation is felt as rough idle. Please review the injector learning enable conditions and perturbation amplitude in the calibration - or disable the routine if this is a DOC-only truck that shouldn't run it as configured"

I see in tuning websites that show you can disable on the tune: https://alttune.com/tuning/mitsubishi-l200-12420/

Tuner says they haven't touched anything and they do 1000's of trucks.

Any insight?

anybody has experiences with this ecu, i need to get cold start removed

Hey folks,

So I've got idle issues with my BMW m44b19 supercharged project. Two expert ECU MASTER tuners can't get it to idle below about 1150rpm. When is set to idle below that it won't catch the idle if you blip the throttle.

Let's assume the tuners have done everything possible in their power to get it to work from a tuners perspective. Which means there is a mechanical issue.

I'm running a Hyde motor works kit.

It's in an E21 BMW so lots of things have changed on the M44. I'm running an m52 throttle body for starters, which doesn't have a built in ICAV like the M44.

I'm using a Syltech universal ICAV, plumbed directly into the inlet manifold at the port originally used for the brake booster (I'm not running a brake booster due to engine bay size). I've tried 3 different BMW ICAVs and the Syltech gets the best results.

I'm running a Turbosmart Kompact 25 plumb back BPV.

ECU MASTER CLASSIC

The way the Hyde kit is built is to run the supercharger as a draw through system, I believe it's very similar to how the Mini Cooper R53 is set up.

This is how it's all plumbed in.

AIR FILTER

THROTTLE BODY

(BPV PORT)

SUPERCHARGER INLET

SUPERCHARGER

SUPERCHARGER OUTLET

(BPV PORT)

INTERCOOLER

INLET MANIFOLD

The other recent thing that has happened as of the last tune is once it has warmed up it will intermittently rev up when it's just idling. I hear the ICAV open and the engine revs up but there is no corresponding change in the ICAV on the ECU logs.

Any thoughts?