Downpipe-Back Exhaust
Just wondering if a tune is needed for basically a 3" cat and muffler delete. I know you don't need one for a CBE and in some cases a TBE but I wasn't sure about this one. 
Apologies if this is a repost.
Apologies if this is a repost.
yes tune will be needed due to test pipe andmuffler delete. Even after you have a tune on a HFC and switch it is possible to cause issues, so even a re tune then is reccommended.

In all honesty I just want a CBE so my X at least sounds good until I eventually sell it and get a IX. I don't plan on keeping the X too long.
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