So I'll lay out the variables right now.

I have a 1998 600f3 with the 2002 f4i cluster swap done, everything works, temp, speed, rpm, fi light as kickstand.

so stock (I checked) in 6th gear @ 7000rpm exactly I hit 133km/hr

now with the -1 +2 combo in 6th gear @7000rpm exactly I hit 133kms/hr

whats going on here that I'm missing... didn't I just drastically change my final drive? shouldn't this read different now ????

thanks

-Lee

 

Your speed is read off of the transmission, You need a speedo healer to adjust it.

 

Okay where do I get speedo healer ?
ebay...........................

how much should I spend and what version should I get ....

 

I think V4 is the most current, I don't have tons of experience with them, but I'm sure someone on here does, Otherwise it's made by healtech electronics, they've got a customer support # and they're pretty helpful.

 

+1 on HealTech. Dont spend more than $115.