Interesting about the 0-4.25V thing, went and checked in the manual and you are definitely correct.

This is the first real direct comparison between these two gauges I have found. The reason I went with the AEM over the Innovate is because every search I did for a comparison had lots of complaints on the LC-1 and not much support from Innovate.

I don't have any real world experience with either yet so my opinion is just coming from what I've read. I'll give the AEM a shot and if I don't like it I'll switch over to the MTXL.

 

I didn't either when I bought it I based more off price than anything. I called support when installing and while the guy I talked to sounded a bit cheesed off with my stupidity he was helpful and ultimately just told me to wire in a relay which I did. Will be sending it back tomorrow when I have time to get it out and will update on new one.