I am wondering about if there would be any questions raised re warranty of my VP44 if I have switched from the stock lift pump to the Fass system. I had one pump replaced lst Nov. and now this one is acting strange. Some hard starts and occ loss of power. No codes thrown yet. 78,000 miles currently.

 

I wouldn't give it a second thought.

 

I recently had mine replaced at no charge. No questions asked. I did remove my Bully Dog control module prior to taking it to the dealer but left my after-market intake and exhaust alone.

Runs great now and gets better gas mileage!

2001 4x4 ~70K