Re: Has anyone re-programmed the M11 Celect for more power?
Reply #2 –
ah the itch has struck. join the rest of us. the later red top 450's had stellite valves and a block support and strong pistons.
unknown if your 400 has any or all of these. max on the red top was 450hp and 1450 torque.
no one makes an upgrade for the celect or celect plus to my three year search.
after the celect plus cummins went to the ISM which has a much higher pressure fuel system which allows multiple fuel injection squirts per firing cycle.
yours and mine are one squirt. noisier. that's why the new diesels are quieter as the fuel is injecdted 4-5 times during the firing stroke.
I have not finished a long run test but after three years of diagnosis the main issues were the fuel lines were cracked from the ultra low Sulphur fuel and all needed replacing. second was the winn fuel filter system has/had vacuum leaks continuously after multiple repairs.
lastly my m11 and yours both have the same cam position sensor. unless replaced it fires the injectors at incorrect times. the en gine compresses the fuel mechanically but when it fires the injectior is elecdtrical.
oil gets in the cam position sensor and shorts out both internal sensors. main and backup. no codes. frustrating.
replacement unit has a solid alloy end cap impervious to oil.
you can hear the erratic idle if the sensor is bad when standing at the rear with the motor idling.
or ignition on but motor not running you can hear the buzzing at times from the injector trying to fire but the motor is not turning over. that's how my shop foreman noticed it.
last part I replaced was the ambient air pressure sensor. more accurate.
neither part is expensive but three years of my time and thousands of dollars to figure out my issues.
told every shop something seemed wrong. but no codes mr owner...
if you replace the sensors and fuel lines and add a rarker/racor filter with the integrated pump and nothing changes and the rack has been run and the valves adjusted and no blowby out of the valve covers from bad rings then what you have is what you have.
then the power is part of the natural beauty of the vehicle.
Pittsburgh power back east kind of vaguely mentioned if I left it there for a few days maybe they could look into it.
my take on that was they knew for sure how to increase the power but were unwilling to publicly violate smog laws and put any such thing on paper.
they did recommend the Donaldson foam air filter for better flow in.
surely let me know if any of my long term work relates to yours and did it help.
mine I think was bad for a long time. short run silverleaf gas mileage seems to have jumped up. noticeable sharper throttle input.
hard to explain but seems stronger.
now for my muffler replacement with an aero 5050.
one step at a time for me.
bought the aero first but was not satisfied that any engine issues were totally addressed. turns out I was maybe correct.
need a 500 mile run to compare mpg.
plus the misfiring may have lessened the ring seal from wqahing down the cylinder wall. should reseat the rings a bit I hope whit a strong run and a load against the motor.
then another dyno run. mine is supposed to have 300-310 hp at the rear wheels. had 250.
if this stuff was easy little kids would do it, three cummins shops. finally my hero heard the buzzing with the ignition on but motor not running then the erratic idle as the cross check.
hope this helps.
possible to make the 400 celect into a 450 celect plus but maybe not fixing all issues first is the way I went.
love to leave it at the pittsburg guys and ask no questions.
the ism mods with the waste gate will not work on ours as they have no waste gate BTW.
yes I asked EVERY question.
check for charge air cooler leaks of course. a turbo inspection should be done also, easy to dust the turbo it seems if bad airfilter use...
Topic: Has anyone re-programmed the M11 Celect for more power? (Read 10882 times)
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