IMO the 178 gives all the mid range you need. My top end came from 3 items, tune, mani's, and ypipe. The bottom end is there and all the car can give with the current gear ratios. The E55 crowd is just getting caught in the bigger pulley more power phase that we had earlier this year. Let's see if any problems arise or solved for that matter. Most don't datalog and just want to get sub 11.5's. They could be running dangerous AFR's and wouldn't know it. All that matters is the word from the tuners adjusting their cars. I met one person with an E55 that was setup and tuned from a major, major company and trusting it was safe after spending the big bucks. The motor blew shortly after. So before anymore mods invest in a datalogger and take it a safe step at a time.