if you are going faster then your speedometer reads does this throw off your speedometer

 

no


[/align]

 

good answer miamiman23 lol

 

here if u go over here is how u can tell exactly how fast u are going

http://mustangworld.com/ourpics/fcar/dtcodes.htm

 

That's awesome johnt2k7. I never knew that!

 

every thing in that write up worked on my 04 3.9 except 2 things

1. oil pressure read out did not work on my car it just read 000

2. when i chect my (DTC) trouble codes it said i had a oil pressure switch failure but when i hooked up a real scan tool out it read no errors at all

 

your not going to bury the speedo stock anywhayser theres a limiter there