Ive searched thoroughly and have come up with nothing except Rbobs white papers on using a 747' for timing only.

Do anyone know anything about using a 730' for timing only? I sold my GTA and bought a 92 Camaro. After about 2 weeks of messing with the timing and a Comp XE282HR cam on my carbed 357 im wanting to try and put my tuning skills to test and use a 730' ecm for timing alone and maybe maybe fan control after that.

What i need to know:
Other than 12volts and ground, what else does the ecm need to know. TPS, IAT, CTS, MAP, KS and etc.?

Can i use a coil in cap dist. with the 730', or do i need an external coil dist.?

I have a 7730' and a 8746' computer and harness as a spare. I would like to hook the TPS to the throttle linkage and get a more accurate reading. I WILL be going back to EFI here soon and it will prolly be in the form of TBI giving the good results i have obtained on a friends car through tuning.

Thank You

 

if you confined the ECM to the main table, as a bare minimum, you could get away with just hooking the dist. back up and using a MAP sensor for load reference. Disabling the CTS/IAT cool compensation, zeroing out all related tables, and barring the use of the closed throttle table + knock retard would leave just the main table controlling the timing. In addition, youd also have to disable all the error codes unless you had the CTS, TPS and other sensors as well that are used as references. This, and youd probably want to verify that the tables and such can be disabled without the reference sensors present. For example the cool temp threshold for using the closed throttle SA table would have to be higher then the default engine cool temp.

 

Thanks for the quick reply.

So if i took care of all the error codes and flags, made sure ALL my tables are zeroed minus the Main SA, and power up the computer with the map sensor hooked up, the ecm will run my timing as is?

I would like to be able to use the ALDL to verify timing if thats possible. Im also interested in using the knock sensor. When i rebuilt the motor i went ahead and installed a used but newer knock sensor for future plans.

I can work out the bugs but i just want to make sure the ecm is controlling timing before i try and crank up and run the car.

Thank You

 

If you used the KS with the internal resistance, then you can just wire it up. BUT, you may need to add in the TPS, VSS, and other sensors to use it as the knock routines have some logic in there as to when to provide retard and so fourth. For example, theres no retard at idle. ECM needs the TPS, VSS, engine speed, etc. to determine when the car is idling

As for the SA, read over the ANHT hack carefully. From about LB906 (search for this when you open it in Adobe Reader) onward is the SA routine. This will tell you whats there and what needs to be disabled. If your just using the MAP, everything but the main SA table needs to be disabled.

You can also use the ALDL. Youll need to make a 2-transister serial cable and hook it up to the ALDL output, or if the ALDL port is there under the dash, you can buy the USB ALDL cable from moates.net.

 

Since you'll return to efi, I'd use as many sensors as practical.
TPS or MAP has a hard coded error that will affect SA.
I've done it several times on the bench and done a wtf....
Spent some time in the code looking for it. I've forgot exactly how it works now. TPS & VSS are the two hard inputs to do. MAP and CTS are easy and the CTS will aid in driveability a lot.