Hey guys I'm kinda new here so i don't know if this in the right thread or not. If not i i'm sorry but i have a quik question. I read in Bruce's exhaust and intake data on the website and decided too wake up my car a little bit. I did the exhaust a couple of weeks ago and installed a cold aire intake yesterday as well as removed the MAF screen.... But no difference!!!!! the only thing i can think of as to why is my exhaust, I bought one V-Force V12 muffler its 2.5 center inlet and dual 2.5 outlet . I put the muffler in the place of the Y pipe installed a performance cat and had tails bent and put on factory tips... is it possible that i lost too much backpressure by elimating a muffler? please help thanx.