I decided to try it this year, and I'm a little confused. I was under the impression it would be free, but I ended up paying $19.95 to file both State and Federal.
Is that normal?
I followed the directions, and left a lot of boxes blank since they didn't apply to me. Seemed easy enough...
It's a mechanical guage, I looked it up... I wouldn't worry too much on how accurate they are.
If it's resting on 0, then you should be fine.
Get another gauge though if you plan on tunning. Every measurement needs to be to the point.
My personal pick for a triple pillar would be.
Boost
WB-AFR
Fuel Pressure
Only the most critical gauges would go in my direct line of sight.
My water temp might be going on my dash somewhere too.
There is a point in having multiple boost gauges, you can measure pressure sources pre and post intercooler to record pressure drop.
For boost, I recommend full electronic with memory control.
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