So i have an 04.5 lly just put a twin over stock set up on it noticed afterwards it was kinda sluggish after installing twins but the tricky part is it would come and go sometime it would be just fine then others it would be a sluggish pig figured that was cause of stock tuning had it tuned and now its a dog all the time until the 475 lights but if i unhook the maf no sluggish is gone and truck runs like a champ any suggestion ???