TBI timing

**White Stripe** · 09-26-2016

I would apprecitate some help in my tbi conversion. Its on a straight 6 landcruiser engine. I added timing control by wiring in a pickup coil onto the stock distributor, have the coil and ignition module wired up from a s10 pickup truck. I have aldl droid so I can monitor live data. When I monitor the timing, the timing slowly works its way up from 1 to 90 degrees and then back to 1 and repeats the cycle. This has had me concerned so I checked the timing with a timing light, and at idle the timing is at 20 degrees while my live data just continues the count from 1 to 90. Whats strange is that at wot on a hill the counting pauses, then when I let off on a flat it continues upward to 90. I was reading that you are supposed to jump the knock sensor pin to a 5volt reference. I did not do this-I can but is it necessary? Also I read the ignition module is supposed to have a heat sink on it, mine never has. Is my module toast? Also I found the signal wire on the module (one of the wires going to the 4 pin plug) had rubbed through and was grounding so I am fixing that too. So I ordered a new module and heatsink. In aldl droid it lists the timing reading as ignition timing from hack. What does hack mean? Thanks for any help you guys can provide.

**sturgillbd** · 09-26-2016

If you are using a 1227747 ecm, you have to apply a patch to the bin to get spark advance into the datastream. Your bin has not been patched so what you are seeing is not spark advance. Are you using a stock EPROM or are you burning your own chips?

Brian

**White Stripe** · 09-26-2016

Originally Posted by sturgillbd

If you are using a 1227747 ecm, you have to apply a patch to the bin to get spark advance into the datastream. Your bin has not been patched so what you are seeing is not spark advance. Are you using a stock EPROM or are you burning your own chips?

Brian

Thanks for the response. I am burning my own chips. Yes I have the 7747 ecm. A patch? I've never heard of that.

**89S10_Project** · 09-26-2016

Originally Posted by sturgillbd

If you are using a 1227747 ecm, you have to apply a patch to the bin to get spark advance into the datastream. Your bin has not been patched so what you are seeing is not spark advance. Are you using a stock EPROM or are you burning your own chips?

Brian

I need to do the same thing for my 5.7 transplant into my S10. I don't want to incur $300+ in purchases to get this ability- is there a simpler way to do it?

**Six_Shooter** · 09-26-2016

Originally Posted by 89S10_Project

I need to do the same thing for my 5.7 transplant into my S10. I don't want to incur $300+ in purchases to get this ability- is there a simpler way to do it?

You can buy all of the tuning equipment need to simply datalog and burn for very cheap, if you're handy with soldering and don't mind using somewhat more difficult to use programmers than the ones geared towards automotive tuning.

I gotta be honest though, I'm handy in both arenas (I work/play with electronics), and the "extra" expense of buying the Moates gear just makes it so easy. The Emulator(s) that are available make tuning VERY easy to do, and you can see the effect of the changes immediately (for most parameters), which cuts tuning time WAY down compared to the log n' burn method.

**White Stripe** · 09-26-2016

Originally Posted by Six_Shooter

You can buy all of the tuning equipment need to simply datalog and burn for very cheap, if you're handy with soldering and don't mind using somewhat more difficult to use programmers than the ones geared towards automotive tuning.

I gotta be honest though, I'm handy in both arenas (I work/play with electronics), and the "extra" expense of buying the Moates gear just makes it so easy. The Emulator(s) that are available make tuning VERY easy to do, and you can see the effect of the changes immediately (for most parameters), which cuts tuning time WAY down compared to the log n' burn method.

So would it be better to do the notes conversion or get the EBL upgrade?