Lozic TCU and ECU Questions

[mitep]

I have seen a few people do the Lozic TCU and ECU tune. They ship you a completely new ECU and TCU when you buy it from my understanding. I really like this because I'm guessing you can swap back to stock if you need to go to the dealer? Please correct me if I am wrong there. Got a few more questions listed out. Greatly appreciated if you have any experience here.

1. I have a JB4 that I keep on map1 or 2. The website recommends -5% shift pattern. I have a feeling that is for map 3 or 4 but maybe I am wrong. Should I go with -5%?
2. What is "like brake snip"? It says "like brake snip_start torque limit is always off". I can't find what this means online.
3. Since I am considering getting the ECU tune, do I need to keep my JB4? Some numbers I have seen suggest that I won't need the JB4 at all if I have the ECU. I am not looking to get crazy power.

Thank you for any help!

 

[Thomby]

1. I believe this is upshifting at a lower rpm to better straddle the power curve, since it drops off near redline. Maps 1/2/3 all taper boost up high, which might increase the case for a lower shift point, but I think most tuners recommend it regardless of tune.

2. Brake snip is the DIY mod to let you build pre-launch boost by interrupting the signal that tells the car you're holding the brake. With a true flash tune, you can modify the launch control rules the car has stock. So I think it's just asking if you want to remove the torque limit when you use launch control, and then separately if you want "brake snip" behavior to be like that too (remove torque limit when you just floor it while braking).

3. You can keep the JB4 but set it to Map 0 and use it for monitoring+logging. You can also use Map 6 to stack custom settings on top of the flash, but that's a bit more advanced. And you might be on your own since you're mixing two systems (vs. stacking JB4 custom maps on a JB4 tune, which is probably more typical).