bike:
I'm getting ready to swap in larger injectors and throttle body(and a/c).

throttle body:
OE 46mm Cable Drive (2P) > SE 58mm Cable Drive (2P), [and matching a/c]

injectors:
27625-06 3.91 g/s > 27797-07 4.9 g/s

i'm updating the tune's injector size (3.91>4.90). is there anything else i need to do in the tune before taking it out for auto tune runs?



i will take it in for a new dyno but, want to do the work myself.

 

You may want to change the engine size to 110 or bigger ....so the VE's will tune up better ...and not peg out so fast ...
if i remember correctly ...under Limits and Switchs ...maybe ....

 

already been switched. I had the bike dynod after i built the engine. It's sitting at 110 already.

 

Well let's see....
You increase the available air to the engine with a bigger T/B. You also increase the fuel injector output.
You can correct the injector size BUT you do not have a clue as to what the ACTUAL air increase is to effectively modify the VEs to compensate.
For the above reason the only way to properly recalibrate the ECM for the changes is to get it tuned. You will drive yourself crazy trying to figure how and why fueling is not linear to the air increase because the engine will not be able to use all the available air in all rpms and loads.
Hope this helps,
Bob