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rrobe99999 · 12-09-2003, 10:27 AM

I Finally have an accurate speedo, and it goes up to 180MPH (at least theoretically since the car won't go that fast). I thought I would share this solution to my speedo probs. When I bought my car with the SR already installed, The speedo didn't work. I hooked up the speed sensor, and got 2X readings. I swapped in the JDM gauge cluster and still got 2x readings (now in KM). I wasn't sure which speed sensor I needed (OBDI vs OBDII?), so I bought a speedo calibrator from Canadian Automotive Instruments. This electronic device connects inline with the VSS signal, and alows you to set your calibration factor with dip switches. I dialed in a factor of 0.3123 which compensates for 2X readings, KMH to MPH, and my 17" wheels. This was a pretty easy solution and cost $140 shipped. If I hadn't already cut the VSS signal to my ECU, this would have bumped my speed limiter to around 170MPH. I'll post my top speed, when I get a safe chance to open her up.

12-09-2003, 10:27 AM	#1
rrobe99999 Zilvia Member Join Date: Jul 2003 Location: Destin, Fl Posts: 262 Trader Rating: (0)	my 180MPH speedo I Finally have an accurate speedo, and it goes up to 180MPH (at least theoretically since the car won't go that fast). I thought I would share this solution to my speedo probs. When I bought my car with the SR already installed, The speedo didn't work. I hooked up the speed sensor, and got 2X readings. I swapped in the JDM gauge cluster and still got 2x readings (now in KM). I wasn't sure which speed sensor I needed (OBDI vs OBDII?), so I bought a speedo calibrator from Canadian Automotive Instruments. This electronic device connects inline with the VSS signal, and alows you to set your calibration factor with dip switches. I dialed in a factor of 0.3123 which compensates for 2X readings, KMH to MPH, and my 17" wheels. This was a pretty easy solution and cost $140 shipped. If I hadn't already cut the VSS signal to my ECU, this would have bumped my speed limiter to around 170MPH. I'll post my top speed, when I get a safe chance to open her up.