My speedo does the same thing no matter what I put in the ratio boxes. Symptoms of what??????? I have flashed twice each with M6 images and A4 images and no change. Wire colors matched when I spliced. Bad sensor? Bad reluctor?

 

Do you get any reading? If yes, is it the stock reading and would it be accurate for the stock gears?

What software are you using?

 

I do get a reading. I suppose I should have explained my setup further but I kinda took it for granted it would be evident what I was doing. I am doing a M6 to 700r4 conversion. I have learned that the A4 sensor is 17 pulses opposed to M6's 40. So I thought changing my flash to an A4 image with the altered ratios would do the trick. I am using LT1 Edit. Even with 1.76 as the ratio, the speedo still climbs at the same rate. I appears to be 2X fast which makes sense because 17 is just under half of 40. However, I have not been able to tune it out.

 

Well if it is reading right for stock, it seems that the issue is not mechanical. After you loaded up the correct gear ratio, did you a read of your PCM to see if the change actually stuck?

I'm going to move this to PCM and see if you get more help there.

 

I have not yet done a PCM read. I have just kinda taken it for granted that it's in there. However, there are some things I am going to be trying. Buying a new speed sensor (the one I have was bought used from a tranny shop and could be wrong), double checking my wiring for shorts, and driving the car with the PCM communicator and scanning for codes. I'll also do a PCM read to see what's actually in there. Since both the M6 and A4 are 4,000 PPM, I should just be able to splice pigtails, reflash and go correct???