It increases power and improves mpg
How does it increase power unless ya change the whole exhaust system from the catylitic converter all the way back? With the size of exhaust on a stock 'Kick it needs to be opened up all the way back to relieve the exhaust flow restriction to make more power. Or without adding a header for that matter... or without opening the intake air up with say an open element filter?
I took my cherry bomb off. It made the fuel mileage worse on my 16v and it sounded like a fart can honda. Annoying as hell and hides other noises yer rig may make. Barely even hear my stereo over that noise.
I would suggest a header, high flow cat back system and also an open element intake air cleaner. Look into another type of high flow mufler... But thats just my 2 cents.
Remember... the more air flowing in and the faster you can get it out will create more power... Not just a glass pack
Kelly