just installed the power pup on my early 99, goes like stink but on the performance and extreme setting the motor has a cackle noise when you really put your foot into it not the smooth sound but a rough pinging sound,is this normal or is there something i can do to smooth it out.....already have the big k&n cold air kit

 

Yeah, I know PRECISELY what you are saying! I had the bully dog power pup, and on the highest setting, at WOT the motor will ping and rattle like it is almost over-reving. It always bothered me, and I was never able to fix it. I think it has something to do w/ possibly poor timing, but it did not sound good. I know you love it, and don't want to be pess., but go w/ a DP Tuner, as I did, and not only will the noise go away, but you'll get much better programming, including tranny, as well as double the power. I will out run the bully dog high setting with the DP 80HP settting, gauranteed.
Been there done that, so just trying to give honest opinion. Hope it helps!

 

ok thanks for the reply guess i made the wrong impulse buy...lol.....lesson learned...check here first....thanks

 

Another vote for a DP tune...incredible(i have the 80hp econo)!

 

Yeah, I made the wrong mistake myself! Now that you have FTE, do a lot of searching and asking questions before your next mod, as you can make the best choice the first time! I kept my power pup for a code reader, but I now use my Auto Enginuity (Laptop Engine Analysis Software tool) so it' again useless! At least a DP Tuner gives you something to look forward to- even more power than what you have now! Never a bad thing!