I have been searching and cant find the answer on this so I wanted to see if anyone could help. I am wanting to put an SCT on my truck, but as everyone knows it won't let me recalibrate the speedo. There are times when the wife will drive my truck and I would rather her not get a speeding ticket so I was wondering if I could stack a Hypertech Speedometer Calibrator - Part #752000 and a SCT tunner on my truck. I know the normal programmer won't, but all this is for is to calibrate and read DTC's so it got me to thinking that it might work. Oh I have a 99 sport w/ 5.9 and went from 245's to 285's.

 

I would try contacting Hemifever on this site and see what he has to say.

 

I know the diesels stack tunes, but zman's correct about checking with hemifever.

 

I know I have seen stand alone speedohmeter calibrators by Jet and Superlift that go inline with the speedometer wires. I don't know how well they work but it would solve your problem. I seen them on summitracing.

 

Hypertech has one of those also, besides the part# listed by the op.

 

The ones I seen only do the calibration and nothing else. I'm not sure about hypertechs.

 

OK sorry, looks like the IN-Line calibrator from Hypertech does not work on our trucks.

 

I'm pretty sure that you cannot stack tuners on the 2nd gen trucks. The PCM can't handle the extra data...

hemifever@aol.com

 

Email sent. I was thinking that I couldn't stack the two. Anybody know of a better way that will work. Hypertech sells the wire hookup that will allow you to recalibrate, but I didn't see it for the 2nd gen trucks.

 

Summit has the Jet and Superlift for 2nd gens.

Jet Accu-speed part number 50110
Superlift Truspeed part number 33002