im getin a suppertrapp mudslinger pipe and my carb rejeted to help turn my 27in outlaws on my 07 400m a little better i was told it would help a good bit am i wastin my time buyin this stuff or will it help?

 

if your adding the pipe youll have to rejet. it will take on the money jetting to make up for those tires. you are ultimately changing the gear ratio of your quad. the pipe will make a difference i put a speedwerx pipe on my 06 400 auto and it made a huge difference. but i had to rejet and it helped im still running stock size so i cant say it will make up for the 27's but it will make a difference. look into reclutching to really make up for those tires. that will solve the oversized tire issue.