Several guys were running this pulling this year locally. 2 had redline boxes both had 150-180HP injectors. 1 Had edge drag box with BD8(240HP) injectors. The turbo couldn't ever clear up the smoke on the BD8's but the other two it could. One of the first guys said he had terrible surging issues on his especially with the box on, he somehow managed to drive to almost all of the pulls though. The guy with the BD8 said he had no driveability issues. He has since pulled the BD8's out and is running his stock injectors and the drag comp on 2x3 and says the truck drives great.