Anyone know which TPI system works better at higher altitudes? I'm at 5344' and some of my "road trips" include going as high as 10,000 to 11,000 ft of altitude.
Thanks,
Larry.

 

I am at 5500 feet and have had both systems. They work fine. Dont know about higher altitudes.

 

I had read somewhere where SD was better suited to higher altitudes like ours but never could find anything to cooberate it.
Thanks,
Larry.

 

That sounds right but I am not sure.

 

Here is a link comparing the two systems. It doesnt mention altitude at all. http://www.carcraft.com/techarticles/24549/.

 

Looks like the thing that would "maybe" make a difference would be the way SD uses vacuum as part of it's programming. If I remember right vacuum increases as altitude increases(or is it the other way around?!). Whatever the case if the SD system makes it's calculations from vacuum then that could explain why it "might" work better for altitude changes. Of course it may not be that precise. Looks like it still boils down to preference and whether or not you are doing mods.
Thanks for the help.
Larry.

 

They both should be fine but the MAF system will work better as it measures the mass of the air which means it auto compensates for differences in humidity, altitude and temperature.

 

Vacuum is actually any pressure less than current atmospheric pressure. At sea level, atmospheric pressure is 14.7 psi. It is less at higher altitudes. I believe Denver is somewhere around 10-12 psi. I would think, that a MAF system would be better suited to higher altitudes than SD because of this.