I installed the Quadzilla XZT last week and now it runs like a V8 running on 7 cylinders from 65 to 75 mph. The check engine light also popped up and is staying on all the time. Is this a common problem with an easy fix or should it be sent back for repairs? On the good side it has great pulling power and better fuel economy. Thanks for any imput.

 

First, shoot me a pm with the serial number on it. Also does it have the TPS wire?

 

Quad recently had a post concerning surging/missing on the 600/610 engines concerning a re-flash for tthe problem you just described. I would call Quad and speak to him or Jeremay and see what they recomend. Hopefully you used the dielectric grease on all connections. Have had mine since mid summer and other than sending it back for the problem you described which the flash fixed have been very satisified with it.

JM02....Don

 

I talked to them and they said to send it back for a fix. Its in the mail today.
Thanks Guys