Hypertech and Tru-speed

[Sierra5.3]

Is it possible to run both of these at once. I want to use the tru-speed for tires and hypertech for power improvement. thanks

[Dihappy]

Hey bro,

Im not familiar with the tru speed, but what does it offer that the HyperTech doesnt?

 

The HyperTech will also do tires, why would you want to get both?

[gandolphxx]

All you need is the HPP3, you wouldn't gain anything from having both.

[Sierra5.3]

The tru-speed can calibrate to within 1% to compinsate for biger tires. I know that the hpp3 can only go up to 34 in tires right?

[Dihappy]

Good point man!

 

The HPPIII is actually good up to 35 with no problems, however the MPH may be off a slight bit.

 

My 315's are at about 34.7" and ive clocked myself with radar and it matches perfectly on my speedo, but if your gonna go up to 36 or more then the SL one might be better.

 

I havnt heard, or asked, anyone about their HPPIII and 36 or larger sizes tho.