The *only* to know its correct is to try to map out the timing vs. RPM at the crank w/ a light and correct it in the latency table. I don't think mine was > 2-3 degrees out though and that was only...

I did this in my 94 YJ three years ago. Put a new 260HP 350 crate motor w/ TBI donated from an 88 Camaro in it.

The stock YJ fuel pump, regardless of whether it was 2.5 or 4.0L, is just fine for...

I think I have enough on my plate right now but I 'm sure I could help. But the hardware has to be easy to put together or it probably won't catch on.

I've been doing Windows dev for years now and...

I'm not trying to sell everyone a new tuning product. I'm not trying to create the "best" emulator/flash add-on. I'm trying to develop a "starting point" for something that the community could help...

exactly - the first one.

i'm not bothering to control the reset line because there simply isn't a need (or advantage) that i can see vs. isolating the buses. I'm already "in the socket" whereas...

I'd prefer the user make the choice to disable the built-in checksum routine. It is what it is and other products will behave in a similar manner if you tune with the key on or while driving.
...

Just another quick update...

I've been taking care of some integration issues having the flash memory hooked to two data/address busses at the same time and I should have everything resolved once...

Some more thoughts...

You don't need 64K on the ucontroller for this. 8K is overkill. You are going to be hooked to some other device (Windows PC, etc.) to actually tune, right? If so, the...

An Arduino mega has 8K of SRAM and would work, but I don't think its quite fast enough to decode the clock/address lines and gate the data, although I haven't tried it so who knows, maybe it is.
...

Yes I did a couple of weeks ago but I didn't want to bug you about it. Check your forum PM, I don't know your private email address.

BTT

I finally scored a 4 cylinder 8192 P4 ECM that I can find an XDF for off ebay last week for ~ 10$ shipped. Otherwise life has been getting in the way so I haven't done anything in the past two...

If anyone has a relatively well-supported 8192 baud ECM around, I'd pay ~ $20 shipped to 53158 please drop me a PM. Something like a 7730, 7727 or so on, that I can find relatively well-maintained...

BTW still need a beer-money priced 8192 baud P4 ECM that is relatively common like a 7730, 7727, and so on. I can pay around $20 shipped to 53158. If anyone has one just collecting dust please drop...

Six_Shooter, this would be an option you could toggle on and off - not something you have to use, nor something I would ever enable by default.

There really doesn't seem to be a lot of interest...

EagleMark, that's an idea, but there really won't be a need to play with PROMs once this is installed anyways. It will have 31-127 banks of flash, depending on the size of the flash chip I end up...

BTT

Bluetooth is now functional in the hardware and has really good range on the bench. I'm able to reach it from the opposite corner of my home from where the ECM is sitting. I need to put it in...

I can confirm the stock "8v" VSS on a 91-95 YJ (and probably 97+ too) will work just fine with a GM ECM, feeding the VSS with the ECM's 5v b+ reference.

I did a TBI 350 swap into my 94 YJ several...

Thanks for the feedback guys, keep it coming, please.

Kickstarter strongly recommends putting a video together, so that's probably what I'd do, but I didn't want to invest the time in that if...

Hello everyone, I've been lurking for a while but this is probably my first post.


Is anyone interested in PCBs and/or kits for arduino-based tuning hardware? I have a bench setup that allows me...