No, you just bypass the current limiting resistors, the modes still work, and there is enough resistance everywhere, in this driver and your flashlight, to keep the current limited to a few amps anyway.
My has lost its next mode memory all on its own! I dont know how, been using it for about 2 weeks on a mix of high and low and it has lost the next mode memory. It always starts on high now.
Great info Guys! And thanks for the pictures with all the added instruction…hand holding needed here. 
Guess I will be finding out if the fasttech version is anything like this soon...I have one inbound
Awesome mod photos by the way...thanks!
Exactly like Ultrafire SG-8 CREE XM-L T6 1000LM 5 Modes Zoomable Flashlight (even cheaper)
Compared to my XR-E Q5 EZ-900 SA-9, that emitter footprint looks big! 
I’m beginning to understand how emitter size matters in a zoomie!
Great photos & review!
Cheers
Very cheap machining in those product pics.
I found if I take a pencil and scrub across the capacitor (brown resistor above the MCU) a few times and make a heavy thick line, the next mode memory goes to a "reset back to high" after 5-10 seconds after turn off.
I am going to get some of those 20mm adapter boards from FT and put a 4*7135 in mine w/ STAR custom firmware (mine has the hollow pill too which means no go on driving it really hard, I did put some artic silver on the ledge where the emitter base sits, and a tiny bit of NOALOX on the threads to help wick the heat away but a solid pill would be MUCH better!)
nice price, just bought one off tmart!!