It's worth it IMO, like mentioned it come with Cipher data logging software ($400 by itself).
I was reading a thread where someone had to sell their VK Pro due to the fact that where he work there was no 91 octane, he didn't feel like taking the thing off all the time. With Up Rev MAP switching it take 2 seconds to switch back to stock MAP if you can't find higher octane gas.
I was reading a thread where someone had to sell their VK Pro due to the fact that where he work there was no 91 octane, he didn't feel like taking the thing off all the time. With Up Rev MAP switching it take 2 seconds to switch back to stock MAP if you can't find higher octane gas.