On an fg xr6t does anyone know if there is access to a 0 to 5volt square wave tacho signal.
Thanks
On an fg xr6t does anyone know if there is access to a 0 to 5volt square wave tacho signal.
Thanks
No you need a tach driver to generate the signal.
04 Velocity MKII M6 & 06 BF F6 555 ZF6
Ok
thanks
Is anyone using a tacho driver to drive an aftermarket tacho and if so which one are you using.
Tune with actual data not simulated data!.....Applied Road/track Tuning
Do you need 1 pulse per revolution? I know some aftermarket gauges have dividers for difference cylinders.
If so, one way I can think of is splice into the coil signal on number 1 & 6, feed them into a line driver chip (74AHCT125 or similar) and combine the outputs. That SHOULD provide you with a 5V square wave signal of one pulse per rev.
Please note, I have never done this and am just thinking out loud. I am also assuming the PCM runs sequential spark and not wasted COP. If running in wasted COP you would only require signal from one coil
EDIT: Coil driver is probably much easier, as hiddeous said. My thought process is purely based on using signals that already exist.
Last edited by timwds; 03-05-2015 at 04:25 PM.
Timwds thanks for your response, basically what I am after is the ability to log knock on an FG as the tuning on my vehicle is finished with the exception of accurately knowing where the knock threashold is. It looks like the new scanner is a long way off, and even then I have asked on the forum if it will log knock with no answer.
What I have done in the past is use the highly developed knock sensing ability of a Delco PCM to log map rpm and knock on other cars (using a GM knock sensor given cylinder size for the knock sensor frequency) and want to do this with the FG however there is no suitable RPM signal.
Tune with actual data not simulated data!.....Applied Road/track Tuning
Just use this,
http://www.ebay.com.au/itm/like/3711...pid=107&chn=ps
I installed one on a mates BA a few weeks back to drive the rpm readout on the eboost - 5v square wave input.
04 Velocity MKII M6 & 06 BF F6 555 ZF6
If you dont have control of the sensor it will show phantom knock all over the place
But the scanner is two weeks away so just hold on.......
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They look similar to the Autometer one Luke, I used one of those to run RPM input into the Eboost, works wicked
Ford BF Turbo Ute,Stock head/cams, In house built bottom end,Atomic Springs, Forged Rods,Cosworth Pistons,Atomic Billet oil pump gears,ARP Head/mainstuds,Process West Stage 3 Cooler Kit- Plazmaman plenum,Precision Int.Gate 6466,Manta twin 3" exhaust,ID1000s Plazmaman surge with Holley 12-1800 pump, Home Built ZF6H26, On United Pump E85 499rwkw 10.5@135mph https://www.youtube.com/watch?v=dgZupPhrMss
Latest mods, FG intake manifold conversion and ID1300s-500rwkw, Yet to see the 1/4Mile
Ive been running one of these for years-
IMG_9386_zps171611b2.jpg
I don't think you can get them anymore though
04 Velocity MKII M6 & 06 BF F6 555 ZF6