I plan to keep stock exhaust and air filter
To get a "Minnor Noticeable" difference with a tuner ( Both Exhaust & Air Filter Need to be Opened Up.)
With Dynojet you will notice a slightly Different <>Shift Pattern <> Mid Range RPM & will run a little Cooler ( Does use More Fuel )
When the Tracks are On <> Most Noticeable
ZERO experience with Dobeck
If your looking for a Big Noticable Difference YOU WILL BE DISAPOINTED. ( Its NOT There to HAVE in a 1cylendar )