Anyone on the forum running Borla SS Turbo Mufflers? If so, how do they sound? Their stuff is always very high quality.
I have magnaflows and headman headers with the pipes exiting out the back and I love the sound of my car I think I have 2.5 inch exhaust pipes I like the borla on the 2015 5.0 BUT some of the 14's I CANT STAND the sound of them I dont know if theyre running borla or not but some of them Im thinking what teh hell is that horrible sound
Turbo mufflers definitely sound good, but just looking at the inside of one; common sense tells me it's got to be restrictive. I know any muffler is gonna have some restriction, but some more than others.
Right now, Summit in Talmadge (Akron) has a lot of cat back systems on their demo rack. Unfortunately, I cannot use any of them however, it gives you a good opportunity to compare brand X, Y and Z in regards to quality. The Borla stuff really looks well made and is usually a lot more pricey than the competition. Summit has recently reduced the price of Borla SS Turbo XL mufflers by 20% and they are now $102.99 a piece for the 2.5" inlet and outlet. Not a bad price at all for a Borla product. I'm thinking seriously about buying a couple to use with my Hooker 6901's and an X pipe. I'm an old chit and don't want my car to be too loud.
Ed Keep us posted as to what you do. I am curious myself. Like you, I am a lot older than I would like to admit and I don't want anything that is too loud either. Those days are long gone for me. Allen Small
Have you searched around youtube.. or even the mafgrs site yet? Should be more than a few examples bolted to SBF with sound clips since these mufflers are far from new. I hear dozens and dozens of combo's running these mufflers every year so here's my dirty penny on how these types of "straight" mufflers sound in comparison to each other. Magnaflow, Borla, Corsa, Dynomax, Thrush, Hooker, Jones, Spintech, etc, etc.. ALL have models with straight through perforated tube designs and therefore have fairly similar raspy, brappy, and even give the crackling affect we've all come to love from the old glasspack style mufflers when you abruptly come off the throttle. Where some of these designs slightly differ is the noise cancellation tricks that are utilized.. small internal helmholtz style chambers(IIRC, Corsa used to utilize this design), type of packing, and even cross sectional area changes such as smaller or larger core tubes. Just to be clear.. I'm not trying to impose my own personal standard as to what muffler design sounds best.. or implying bias as to what I like or prefer here.. because I myself usually always prefer higher flow/more power if the application will allow or can utilize it. Most of these types of mufflers will give you that in spades if the inlet/outlet/internal dimensions are compared in similar fashion. Unfortunately, most of the street motors I build have fairly high compression(10.5 - 11.5:1) and these type of designs simply afford less sound reduction by virtue of this design.. which usually forces me to use multiple "pre-mufflers"(short bullets/glasspacks) ahead of and leading towards the standard chassis allowable muffler location. This of course leads to excess weight and drives complexity and $$$ up rather quickly. When boiled right down.. there is VERY VERY little latitude to "reinvent the wheel" within the typically used 14 x 4" muffler case. You can robotically weld and polish them into mirrors(ooohhh shiny!.. I'll take 2 and add next day air please!).. or even make them out of exotic alloys.. but after all is said and done and you strip away the case.. they are still all simple straight through perforated tube glass-packed mufflers in the end. Some potential design variations which can affect sound and performance levels to be aware of here. Core size(different brands with similar inlet/outlet mufflers can have completely different core tube size which affects flow and noise reduction properties).. the inner cores perforation size and total numbers(which affects frictional loss).. and inlet/outlet offset configurations(center/center is best and will be louder due to shorter distance through the packing but flow better than offset mufflers due to frictional losses associated with turning through a pipe with perforations along its interior surface).. and inlet/outlet pipe tapers as they meet up to the case(length and degree of taper affects overall flow). I realize this isn't your first trip around the block with hi-po parts combo's but still hope all the above helps in some way shape or form.
These are fairly loud mufflers and the higher the compression and more power the engine makes?.. the louder and more obnoxious they seem to be on the old ears. Also.. after I wrote the above.. I remembered that I have also seen several street/strip cars using homemade helmholtz chambers simply because the car owners couldn't handle the drone/higher frequency cab tones that can often accompany these types of designs.
The Pro XS is a newer version of the Turbo XL's and are about $12 cheaper per muffler. Are you running them on your Comet or your Mustang? Any pics of your system?
i'm running them in both cars, the mustang is a 6cylinder, though. here's a partial shot of the exhaust. true duals, hooker 6901: http://www.72comet.de/gt/index.php?id=138 a video of the car idling: http://www.72comet.de/gt/index.php?id=139 pretty quiet on the inside: http://www.72comet.de/gt/index.php?id=140 it's not too loud idling and part throttle, but sounds mean and healthy when you stomp on it. absolute NO drone, which makes the flowmaster mufflers so annoying.
I ordered a set of Pro XS's for my car. Thanks so much for the sound clips. I'm curious, how fast do you usually drive your Comet on the Autobahn?
it depends on the speed limit - yes, we do have speed limits over here 120 kph = 75 mph is the most common speed limit. no real challenge for the comet... it's been up to 235 kph = 145 mph on a stretch with no speed limits.
