Lol! STR owners, Be rest assured that I'll eventually pull the trigger on an ETG ECU tune. Mina sent a 1.7 lb pulley as a means to satisfy the parameters of ETG. The owner of the fastest 5L XFR says he has data showing that the 4.2 s/c can handle the ETG tune very well with the 3 lb pulley...that the ECU monitors boost, timing, and fuel, blowing off boost as a means to maintain perfect stochiometry and safe level of operation.
At the present, we are admits building a $250,000 2000 sq. ft 5 bedroom 3 bath addition to our existing home. If it weren't for this, there would be a 650 chp Avos TS 07 XKR sitting proudly next to a 475 chp ETG ecu tuned 2003 STR. Give me some more time...it'll happen ( ETG ECU tune).