Jamesy Posted November 11, 2007 Share Posted November 11, 2007 hiya! i am hoping to replace my superdragger backbox for a Boost logic one...thing is i have been told it may not be possible to just swap the back box as the BL is a 4" bore???? when people say full cat back exhaust....does this basically mean you keep the existing downpipe with the 1st (de)cat in, but the 2nd decat pipe and backbox is all replaced with the new system?? i have just had new 1st and 2nd envy decats fitted 8 days ago so didnt wanna remove these already, so is it possible to fit a BL backbox to my current system??? thanx in advance! Quote Link to comment Share on other sites More sharing options...
Steve Posted November 11, 2007 Share Posted November 11, 2007 The Boostlogic is a 4" system from where the 2nd decat finishes. ( ie. catback system). So you will keep both Envy Decats. So you will need the BL Catback system, and a 3" to 4" v-band adaptor, so this will then mate up to your decats. Hope that makes some sense This is the adaptor http://www.mkivsupra.net/vbb/showthread.php?t=113642 Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 11, 2007 Author Share Posted November 11, 2007 cheers mate - so the BL exhaust is not a massive long pipe that runs from the 1st decat pipe near the engine...... so the cat back bit means from the end of the 2nd decat pipe to the back box?? thanx a lot fella...... Quote Link to comment Share on other sites More sharing options...
Steve Posted November 11, 2007 Share Posted November 11, 2007 Yes Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 11, 2007 Author Share Posted November 11, 2007 Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 12, 2007 Author Share Posted November 12, 2007 just a thought - how will the 4" BL system fit my 3" envy 2nd decat pipe???? Quote Link to comment Share on other sites More sharing options...
Steve Posted November 12, 2007 Share Posted November 12, 2007 just a thought - how will the 4" BL system fit my 3" envy 2nd decat pipe???? With the adaptor that i posted about in post 2. With a 4" V band clamp aswell. Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 12, 2007 Author Share Posted November 12, 2007 swap yours for my Superdragger Quote Link to comment Share on other sites More sharing options...
Steve Posted November 12, 2007 Share Posted November 12, 2007 swap yours for my Superdragger But then that wouldnt fit my 4" Downpipe and 4" midpipe Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 12, 2007 Author Share Posted November 12, 2007 get a reverse adaptor thingymablobby???? so even tho i have a 3" downpipe and mid pipe, will the BL backbox still be as loud as it sounds on other cars?? Quote Link to comment Share on other sites More sharing options...
Steve Posted November 12, 2007 Share Posted November 12, 2007 get a reverse adaptor thingymablobby???? so even tho i have a 3" downpipe and mid pipe, will the BL backbox still be as loud as it sounds on other cars?? Mine was loud with a set of 2.5" decats Although it should be louder with the single on Quote Link to comment Share on other sites More sharing options...
Jamesy Posted November 13, 2007 Author Share Posted November 13, 2007 sure will - enjoy dude!! Quote Link to comment Share on other sites More sharing options...
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