OK this is to dispel the myths and disinformation out there about O/R H pipes
1. The car has a deeper tone but not alot louder at Idle maybe 5% louder
2. Under normal accelleration the car is 5-10% louder inside the car at most
3. Under hard acceleration the car is 10% louder and deeper
4. At highway cruising 65-75 MPH the car is not louder at all only a deeper sound.
So in the interest of giving people honest and truthful info I am going to change my mind with regards to H pipes.
If you have flow thru mufflers Dynomax Ultraflows, Magnaflows, Borla's or GT mufflers you will not really be much louder or and definately not ricey
If you have Chambered or baffled mufflers like Flowmasters, MAC flowpath, Spintech you will be louder because of the exhaust pulses hitting the baffles and chambers harder without the cats causing a louder drumming effect.
On the Corey Scale or 1 to 10, 10 being the best I give the mod and sound a "9"