Suzuki SV650/S (2007-2008)
Power Commander III USB
(Part No. 337-411)

A Power Commander seemed the ideal way to fix this issue and to this end I purchased a Power Commander III USB (Part # 337-411). Now that I had a way of eliminating my lean spot I also decided at the same time to install a K&N air filter and swap out my stock SV650 snorkel with the larger SV1000 snorkel (see image below). The map I used for the present time was downloaded from powercommander.com and is the M337-004.djm. This map is for a 2007-2008 SV650/S with M4 hi-mount slip-on, K&N air filter and de-snorkeled. My setup is a M4 lo-mount, K&N air filter and SV1000/S snorkel so its pretty darn close. Of course best results are to get your bike on a dyno and a custom map installed. Seeing the nearest dyno and PC service center is three hours away I am going to use the downloaded generic map and see how it goes.

The instructions say you can disconnect the FI connectors with the airbox still in place but it may be easier if you take the airbox off. If you can get to the FI connectors and remove them with the airbox still in place you are a better man than I, my friend. I can honestly say those connectors are a bitch to get off without removing the airbox and even with the airbox off there is not much room. But once the FI connectors are off the rest of the install is a walk in the park.

The end result is exactly what I wanted, NO MORE lean spot at 3500 RPM and it feels smoother all the way through the rev range also. How this will effect fuel consumption remains to be seen but this whole exercise is worth it to eradicate that pesky lean spot.

UPDATE as of 4/1/10: With the standard stock map downloaded from Dynajet I have only lost approximately 2-3 mpg, getting around the 48 mpg mark. When touring I just load a slightly richer map before I head off.