Good question and I'm not sure I'm qualified to answer
Since a good Dyno guy can make the chart look anyway he wants, that's not too helpful.
There are several things I would look for
1) easy starting
2) when warmed up the idle should be around 800 RPM
3) Smooth in the parking lot! What I mean by that is you'll feel plenty of low end torque. There will be no hesitation but immediate and positive throttle response from 1st gear at an idle. If its jerky then [sm=imsorry.gif]
4) Take it up to 70MPH then in 5th, roll on the throttle. There will be an immediate and positive throttle response. If it sounds like a Volkswagen [sm=boosign.gif]
5) There will be an immediate and positive throttle response regardless of the gear or speed. You should feel the power almost like a surge when you roll on hard. It will go through the gears faster and very much smoother feeling on Acceleration and Deceleration.
6) the will be absolutley no poping on deceleration. Go ahead wind it up and let it go. Or take on a 6% garde or better and downshift.
7) Finally, you need to be getting better than 40MPG.
I'm not familiar with your pipes. My T-rex 3" true duals were defective and I tossed then while on a road trip. My dealer never understood the problem and because of that could not get a consistent run after 6 hours. You just have to believe in someone. Find a club or group in your area and talk to them. I found my tuner 700 miles from where I live. No one around here could help!
Lastly, I am not an expert by any means. I've asked all the questions and continue to do so. The folks on this forum are awesome. Take the responses and use them as food for thought. Make your own decisions. The above 7 points are what stand out for me after my tune.
Hope this helps [sm=signs003.gif]
ORIGINAL: FLSTCI nut
Thanks for the quick response. Just how will I know if I get a good tune? Other than hopefully the popping on decel quits.