this is just a some comparisons of my ptf v204 91 octane etune running flash only vs running with the jb4 installed set to map 4. the v204 log is from a few months ago, the v204 test 3 the log it took on december 13, 2015, and is one day after the log with v204 running as the back end to JB4. running the tune as flash only is much better in both of the flash only logs. boost is almost 2 psi greater at 5500rpm (15.X vs 13.x) and the avg ignition (less than 1 vs 4.5) is much better on the flash only. not sure why, but for my car this particular tune is much stronger without the jb4 than with the jb4. furthermore, the flash only logs are much stronger then the jb4 running the BMS BEF on either 01 or E50, which is impressive.