Thanks for the help guys, the only mods. that have been done is the stage 1 kit and I have added vance and hines big radius pipes and vance and hines fuel pak, do I still go with the 21 g ????
The V&H Fuel Pak is a very limited tuner. When I upgraded to the 21g I was concerned about fuel management so I called V&H to ask them about the Fuel Pak. (Joe Minton of American Rider magazine had recommended them so I thought I would give them a try.) Well when I called them and told them that I wanted to use their product, told them what my set up would be, 03 Fatboy, 88in stage 1 with basically their q-series double shots(SE 16 gauge double barrel) and the Andrews 21g cam. They told me,"we don't have a map for that combo". The bad thing about that tuner is no one but V&H knows what the buttons do so you can't take it and have it dyno tuned. Even a TFI is better because at least you can adjust it yourself.
I ended up putting the cams in without a tuner, just using the Stage 1 download. it runs ok but I'm sure that if I had a good tuner like the Mastertune TTS it would run even better. You might be ok with the fuel pak and your current stage 1 settings. Many are running the 21's with stage 1 download only.
Also there is a lot of set up involved using gear drive cams. You have to check the run out on your crank and it has to be at .003" or less. Also the camplate itself has to be checked after you put the gears in it because of manufacturing tolerances and sometimes you have to use undersized inner gears as well as undersized outer gears.
It is much easier to use the conversion cams instead. They come with the upgraded oil pump too. You don't have to worry about crank run out or camplate tolerances either.
Here is a good deal if you want to go that way.
GMR Performance | Monthly Specials
$979.95 COMPLETE CONVERSION KIT
Complete Andrews N conversion kit with everything you need to upgrade your early style chain drive cams. We have put this kit together with a few extra items. Torrington inner cam bearings, LMR bypass oil spring installed in cam plate. Andrews EZ install pushrods, new push rod covers to allow ease of pushrod adjustment, loctitie, and torco assembly lube. One stop shopping with every item needed to complete your install at home.
You could also buy it from Herko as many members of this forum have.
HTH,
Randall