Here's my opinion on the three:
1. SLP- Very nice looking 4" dual wall tips. Very aggressive which is what I wanted. Just can't justify paying 350+ for dual walled muffler deletes.
2.
Pypes muff deletes- Very loud; good. I've never heard one in person but all the sound clips sounded like nascar. The noticable "mustang rumble" was absent during decel. A lot of popping and kind of raspy. Again although priced well 220-250 among other AB's, it still seemed a little pricy when a muffler shop can fabricate you some muffler deletes for half the price.
3. Boomtube- I bought these because the mustang rumble was there along with the increase in sound. A lot of people think the welds are cheap, I have no problems. It's a 4" dual wall with a cheese grater looking louvers inside which do not have a packing material that can possibly degrade or blow out, and do there part to reduce drone and limit the popping sound. I got mine for 276 through LastCallRacing (one of our venders). I think they are about 300 right now. I picked mine up from the creater/fabricater in Temecula, CA and he is a good guy who will warranty the set for life if anything goes wrong. He told me he has never had to replace any of the 3K he's made.
Also keep in mind of the sound your choice will make with future mods. Many owners start out with changing the AB, get used to it, and then want louder. A change of the mid pipe or headers then produces an unwelcome drone, rasp, or just too much sound. These noticably louder with the stock midpipe and intake. I personally think any more would be excess as the sound can be easily modulated with keeping your foot out of high rpm. A x pipe is the common midpipe with a straight through muff. H pipe is common for chambered muff's like the
flowmaster and macs.
Consider the SSS terminator AB as well. Well priced at 299.
No popping, very little drone. Quality is not the greatest but there not in the $500- $800 range either. I paid $319 w/free shipping. Look for discount codes on forums.
