performance upgrades

[biggug]

well, ive done a stage one upgrade on my 103". Can anye tell me the pros/cons of maybe putting on a power commander III on?

 

[dbmg]

Dobeck TFI.... Best bang for the buck with infinite adjustabilty and the best in the business for customer satisfaction.
TFI Tuner From Dobeck Discounted (NEW OFFER) - Harley Davidson Community

 

[ajakaitis]

Just keep in mind Piggy Back devices intercept the ECM's signal and modify it, in the event the piggy back device fails your bike goes back to original configuration. Depending on you modifications this can cause problems.

 

[Jack Klarich]

Power Commander Problems - Harley Davidson Community here is some reading on the Power Comander