DIYEFI.org Forum

I am very new to this side of automobiling. In fact I am not ever sure where to start.

My Project: A 2001 Jeep Cherokee Classic. Its primary use is as a family carrier, but we are not your typical family. Most of our time is spent traveling to off-road and safari type adventures.

My Goal: To experiment with fuel mapping; better fuel economy and power gains. The former being priority.

I am not sure of all the possibilities of programing an ecu, but I am very attracted to the idea of it. And yet, I may be in over my head.


If I could get some feed back and/or ideas to begin on or to detour me from this aspect of the project, it would be appreciated. There are not a lot of options availible to the Cherokee enthusiast, therefore I have been inspired to investigate the possibilities.

Thank you,
Shannon

Hi, Welcome! :-)

FreeEMS is still in it's infancy, and is a fairly serious thing to start putting on your car at the moment, but if you want a practical solution and you want it now, MS2 isn't a bad way to go for the time being! :-)

Whatever you choose, your hardest part will be physical robustness! You need to keep it clean, dry and free from vibrations and even your engine RPM/Position sensors need to be protected as branches and such can end up poking around in your engine bay sometimes.

Maybe even look at microsquirt for it's environmental considerations.

I don't know how crazy you go off-raod, but I do know some people that go absolutely nuts and engine management needs to be done right for them :-)

If you're up for a lot of hand holding etc you could dual ecu the vehicle and help test code, but be aware, that would be a BIG time sink for you, and as HELL of a steep learning curve :-)

Fred.

Hello friend I am Gustavo from Venezuela.
I have a cherokee classic 2000 to which I am installing the Megasquirt V3 MS2.
First of all I´ll say that MegaSquirt does not support the cherokee toothed wheel pattern
I was asking why in this forum:
http://www.msextra.com/forums/viewtopic ... 91&t=30527
But i never got a response.
So after years a decide to install a toothed wheel ( 36-1 ) in the balancer damper.
i still having troubles with this wheel because it isn´t centered properly so i have spikes in the vr signal.
Greetings

gsune, if you get a FreeEMS built and connected, we can take a binary log of the triggers and I should be able to write a decoder for you from that alone. This assumes correct circuits and a noise free install, though. I don't need degreed information as James asked for ;-) We can work out the engine angle relative to the sensors at a later date. I'd be pleased to have that data, so do get it for me! :-)

OOOOOHHHH THANKS MY FRIEND
YOU ARE MY RESCUER