Is there any real differances between the two or is it pretty much personal opinion on what you want? Which one is easier to install?

 

Apexi has o2 reading,battery,auto timer, and a/f

 

why do you need a Turbo timers???? they are not needed on Evos...since our Turbos are water cooled as well. just sit in the car for 20 secs when you park...save your money for other things...

 

The HKS type 1 will also tell you your speed/rpms with warmings for either if you go past your set warning. it also tells you your 0-60, 60ft and qtr mile times, how acurate those are i dont know i never compared at a track but i know the speed and tach were accurate, i used to have one in my old 1g dsm

 

I know the HKS has an install harness that you can use but does the apexi have anything like that or does it all require a hard wire in.

 

I had the Apexi TT and yeah it reads narrow band o2 so it's nothing really you can tune or anything. I have no idea what the HKS TT does. But get something basic.