- Joined
- Dec 25, 2002
- Location
- mont, AL
all of them. shows max advance anywhere of like 17 degrees. I'm willing to accept conservative timing, but even that is excessive
Hello Guest, welcome to the initial stages of our new platform!
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all of them. shows max advance anywhere of like 17 degrees. I'm willing to accept conservative timing, but even that is excessive
If I can usurp my buddy's ostrich I might have a little more to add to this today or tomorrow.
That would be excellent. If you get a chance before I do, crack open your EZK see if you can get the speed of the crystal on the board; it will probably help a lot with the maths... I'm at work right now and the only picture of it I can find has a test mark obscuring the numbers...
I think the highest I have that works was less than 20, so...
*opens google calculator*
9xx LH2.4 runs at 12.5 Mhz
(1/12 500 000) second = 80 nanoseconds
I guess 70 should work, but it is cutting it close. I'd shoot for 40 or less.
I am told that the 5xx ECU only runs at 6Mhz so it might work just fine if you have one of those.
All my 9xx ecus have 12 MHz cristals.
LH 2.4 timer is running at 500 KHz (in 950,962,967 ecus which I have disassembled),
rpm signal from EZK is two pulses per revolution.
The following formula is from motronic, but seems to work for the EZK ignition tables:
X * -0.375 + 60
editing the data in the xdf, this looks about right
for those doing it through TP, the equation is ((X * .375) * -1) + 60. for whatever reason, multiplying by a -.375 made everything zero.
Change it to -0.375 and it works. TP's equation parser sucks
Whoa ipdown, thanks for that! I am glad my approximation formula is useful. Looks like we will never have a straightforward formula for RPM though.
I have just re-polished the EZK XDF and posted it, check it out. If you all approve, i'll update the zip...
http://dl.dropbox.com/u/2074311/Volvo_EZK_208-beepee-v2.xdf
Let me know what you think and if I am moving in the right direction... Thanks.
Man it's your zip and xdf, you don't need our approval to update your stuff
Checked the crystal on a 153(i think) ezk (2.4 ezk...) and it's 8 mhz.
grabbed my moates burner at lunch, bouta get that software spun up on the new laptop
Amazing. Seriously man. Awesome stuff. Truly set up for idiots. Can't thank you enough.
Thanks!
And a tip - Porsche 928 used LH 2.3 and there is tuning system for it - SharkTuner. From it's manual they recommend setting rev limit to some low rpm, and tuning afr up to that point. Then gradually increase rev limit up to the range.