My 3" custom exhaust with spring loaded flapper valve
#32
The popular quiet 3" muffler seems to be the 22x5x11 Magnaflow, but I like the flapper idea. All the Dynomax VT Mufflers are of the smaller variety except for the 17963:
If a Dynomax 17963 were to be installed on a miata I would envision that the dual 2.5" outlets would have gradual 90° turndowns, rotated 45° to the rear. The flapper may not last a long time, but these mufflers are relatively cheap if they need replacement in a few years.
Pro's?
Con's?
If a Dynomax 17963 were to be installed on a miata I would envision that the dual 2.5" outlets would have gradual 90° turndowns, rotated 45° to the rear. The flapper may not last a long time, but these mufflers are relatively cheap if they need replacement in a few years.
Pro's?
Con's?
#40
My research on these VT mufflers hasn't shown much promise. Apparently they are really bad for boxer engines (boo for my Forester) and cars with cams. Apparently the flapper and rattle at idle and other situations. Also, it seems the flapper starts to wear over time and loses some performance, for the Evo guys it was after ~ 1 year.
Honestly, I wish somebody would run with this idea but do a better job engineering it. The Dynomax VT muffler is pretty affordable but it seems to have some serious flaws. Personally I would rather pay $200 for the muffler if it worked 100% as advertised. Versus paying ~$100 for a muffler that sort of works but also rattles like hell at idle...
Honestly, I wish somebody would run with this idea but do a better job engineering it. The Dynomax VT muffler is pretty affordable but it seems to have some serious flaws. Personally I would rather pay $200 for the muffler if it worked 100% as advertised. Versus paying ~$100 for a muffler that sort of works but also rattles like hell at idle...