different ecu

[moorepowercoati]

Has anyone tried to convert the 3.0 to GM ecu with many more options for progrI wonder why it could not be done, as most of the streetrods of all brands use a GM computer off of a tpi system. I have seen them on ford and Mopars and they seem to work quite well, and they are inexpensive. Most of the aftermarket stuff is quite similar to if not a duplicate to the GM stuff.

[roguetrip]

I've never heard anyone try this, sounds like it would be quite a bit of work.

[moorepowercoati]

They use the same injectors, a gm tb could work, knock sensor would be easy, coolant temp sensor, easy, map sensor, easy, crank trigger could be made, what am I missing? tps is on tb. I know it would be alot of work if possible with my automatic, but with a stick? Painless wiring makes harnesses for streetrods and older efi swaps. I am just asking has anyone thought of or tried?

[Ntrain2k]

Your real problem will be interfacing the stock stuff (guages, etc) with the gm stuff.

But if you left the stock stuff in there and used the gm stuff as a piggyback......

hmmmm..

[Ondonti]

that would make my underdash harness cry!!!!!!!!!!!

It already doesnt behave.

[Ntrain2k]

Wire in resistors to the stock injector harness, let it control the idle and the body functions.

Install a turbo buick ecu and harness, MAP, etc..

Thoughts are rolling hard here.....

[moorepowercoati]

Aftermarket gauges? The GM stuff is just so tuneable. I know my auto would be a nitemare, but it may be a way for the stick cars to be all they can be.

[87turbodance]

Why not Megasquirt?

[gkcooper]

* speedometer, just leave it as it is, the SMEC sees the signal from the speed sensor but so does the speedometer, and the speedometer doesn't care

* Water temp, the guage uses a diffeent sensor than the SMEC anyway
* Oil pressure only goes to the dash anyway\
* Tach can be run directly off the coil
* Fuel guage is read directly from the tank sender

What else is there? Unless you have a systems monitor or driving computer, there is absolutely no reason whatsoever that it can't be done.

If you have a '91 or newer with a body control computer, the instruments themselves are still the same anyway, they just get thier signals from the BCC.

Quote:

Originally Posted by moorepowercoati Aftermarket gauges? The GM stuff is just so tuneable. I know my auto would be a nitemare, but it may be a way for the stick cars to be all they can be.

[c2xejk]

So what are you trying to gain by going to a different controller???

[moorepowercoati]

All I have read is how the stock computer is holding these cars back , retarding timing, can't adjust fuel map, ect. ect. The megasquirt is fine but the GM stuff is dirt cheap, and there are tons of places that will burn chips. It might be a cheap way for alot of people to wake up there cars with a better fuel curve and timing curve.

[Ntrain2k]

Quote:

Originally Posted by c2xejk So what are you trying to gain by going to a different controller???

The turbo buick ECM's are VERY hackable.


Kind of unlike what us 3.0 guys have now.

[87turbodance]

Going to a GM ECM is fine and all but then you have to mess with some kind of ignition pickup. I think Gm uses some kind of a combination of a hall effect and VR sensor for their DIS systems. I say mount a 36-1 wheel on the back of our crank pulley, mount a ford VR sensor and either run Megasquirt with a Ford EDIS6 box or feed the VR signal right into MS to run the stock coil or run a coilpack of some kind. I like the MS idea better. I hate burning chips though. MS is can be fashed on the fly which makes tuning a breeze. Not to mention it can be setup to run whatever you want and you can build a complete working unit for $300.

Sorry I'm not trying to steal your thread. I just want to throw some ideas out to people

I gues if you're not in to building electronics yourself MS would cost a bunch more to buy completed

[moorepowercoati]

The pickup is a non issue. As I said befor, it is being used on all brands now in rods. Also, if you computer fries anywhere in the country, you just go buy one.

[Tim_K]

I see a lot of GMs at the dragstrip, and their owners talk about how they bought a chip that was flashed for their setup and plugged it in, and that was it.

I hate it that GM makes things easy like that.

Why does Chrysler have to be so tough with letting their calibrations be changed? What do they think they're going to lose in the process?

Can't the signal from the V6 distributor be adapted to the GM computer? I'd hate to give up the simplicity of the distributor.