Uncategorized Pcv accelerator pump question… September 14, 2016 dstech Just installed my 1040 kit with mav pistons and mav heads with gpp cams. I’m pretty good at tuning with the autotune. But I’m having trouble finding any information on using the accelerator pump feature. Can somebody drop some knowledge on me?! Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related