I have an 08 Mustang GT/CS and I added Pypes O/R H pipe, MAC axlebacks and bamachips tunes. They sound awsome outside the car but the drone and trumpeting at certain RPMs are starting to get on my nerves.

I'm thinking about going back to the factory H pipe with cats and leaving the MAC axlebacks or maybe changing to Boomtubes.

My question is, since Doug configured the tunes for an O/R H pipe, does that mean I need to get him to change my tunes since I'm gonna go back to the stock cats or can I just put them back on and not worry about changing the tunes?

Thanks for helping.

 

Can't help you with the tune part of the question but the Mac's are probably most of your problem. They drone like crazy and will continue to do so even with the stock H pipe. I'd try swapping them out before anything else.

 

Sell macs, buy stingers.

 

Beautiful ride, thats the CA red, isn't it?
You will most likely need your tune reworked if you go back with the stock H. Call your tuner & ask him about that.
Re-installing the cats will reduce or eliminate the trumpeting, but not the drone. Do a little reading on the various axle-backs before you buy again.

 

take your mufflers off and see how you like the sound.... i would do this first cause its free. if you dont like it no loss