Does anyone have dyno numbers from before and after stock to 58mm throttlebody body change.Just curious to see if real world numbers are worth it.Running 104hp with 114tq now with my 09 sg with 103 kit /ported heads and pro pipe.
just curious
With my new Screamin Eagle 110 performance motor I am running 58mm TB/injectors and yes more air/fuel will make the bike run a lot stronger with larger pistons, head work, bigger cam, high flow oil pump, lifters, pushrods, balanced crank, Boarzilla 2-1 exhaust & Trask high flow a/c...….whatever stock SG 103 motor hp/tq > 119hp/122tq......if I have to do it all over again I would go with Zipper's performance kit.