so much knowledge here!

well XDl is comming up and i took my powerless (not bogging) motor out of my 2001 f4i
and put my powerful snappy 2002 f4i motor in the 01 frame.
well when i ride now the bike has power spurts then dangerous boggging issues, (very twitchy)

funny thing is, that powerless 01 motor is running strong in my 02 f4i?????!

so now i need to figure what is up is it
vaccum?
electrical?
fuel?
bad (old) part^

I am going to sync the TB's
then imma check all conections
then imma even try a stock airflter...

any other ideas?

my bike has a stock header with A 9 INCH YOSH CAN
k&n filter
60 rear sprocket 15 front

i need to get this straight i havent rode my bike for close to a month now!!!

but i did go ride the bike once to ffind that my bike is running crappy!
my combos got crappy do to power loss!!!!!

my stalls got better cause i have to stay on the clutch to save my as*

i have a mechaninc helping me through this but he doesent seem to know f4i's
so any mech. lingo i can send to him will be great,

 

is the power loss in mid range or high rpms cause i know when i put cut my d&d down to 7 inchs my bike ran like a peice of *** in the low and mid range it was real spurty and i had to rev the **** outta it so it didnt bog when starting out. i have heard of this problem ocuring due to there isnt enough back pressure in the exhaust try getting a normal can again and see if it helps if it does then you spent 20$ wisely if not i would still try a custom map for the power commander