moonstone Posted July 28, 2017 Share Posted July 28, 2017 My own supra is a 100% bone stock TT auto, and it's too quiet for my taste. I'm looking for a nice 3-3.75 inch exhaust for bpu and a sportier sound. However I don't want it too loud and absolutely no droning. A lot of the aftermarket exhausts drone with the auto transmission, especially the HKS carbon ti (which is a shame, because I love the sound on a 6spd!). Options I'm currently looking at are: HKS hi power silent (pretty quiet on a larger single of a good friends supra) Apexi N1 or GT spec Whifbitz single or twin box TRD gen2 (if I can find a reasonably priced one) I've never heard any of the Whifbitz exhausts in person, so this will make the decission more difficult for me. I've found some video's of the single box and it does sound good, but maybe too loud in the car? Can't find any decent video's of the twin box though. So I'm hoping you guys can help me out. Looking for an in car and exterior video of the twin box. Any other options would be helpfull: 1) 3-3.75 inch 2) Sportier sound 3) no droning!! Especially on an auto car Quote Link to comment Share on other sites More sharing options...
AC93 Posted July 28, 2017 Share Posted July 28, 2017 I was in the exact same position 5 months ago. My TT auto is stock except the zaust and I needed a new one as it still had the original on and was blowing like a hemi I got the 3" Whifbitz decat pipes new and a catback from the forums here. It's a straight pipe with a backbox and it sounds beautiful! Doesn't drone on motorway trips and just lightly burbles around town ..but oh my it does come alive when the turbos are on boost! Quote Link to comment Share on other sites More sharing options...
samm Posted July 28, 2017 Share Posted July 28, 2017 Is that a whifbitz cat back as well? Quote Link to comment Share on other sites More sharing options...
AC93 Posted July 28, 2017 Share Posted July 28, 2017 No it was a custom stainless 3" catback that I got secondhand on here Quote Link to comment Share on other sites More sharing options...
C12MMO Posted July 28, 2017 Share Posted July 28, 2017 I have a whifbitz twin box on a single turbo auto and it doesn't drone on the motorway and is low enough db for track days but sounds great when the throttles open. Quality is great as well. Quote Link to comment Share on other sites More sharing options...
CarlM Posted July 28, 2017 Share Posted July 28, 2017 I have a whifbitz twin box on a single turbo auto and it doesn't drone on the motorway and is low enough db for track days but sounds great when the throttles open. Quality is great as well. Agree with the comments above I have one on my single turbo auto too Quote Link to comment Share on other sites More sharing options...
moonstone Posted July 29, 2017 Author Share Posted July 29, 2017 C12MMO and CarlM, do you have any vids? Any in car footage would be very helpfull. TIA Verzonden vanaf mijn iPhone met Tapatalk Quote Link to comment Share on other sites More sharing options...
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