Join Date: May 2017
Location: Southern Oklahoma, USA
Mentioned: 10 Post(s)
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Just my 2 cents, but if you put an insert in the muffler, you are likely to have a very even idle. I have m4 headers with a Yoshi Alpha can, and it was very rough until I put the insert in. After that, it idled as good as stock. Dano's tune seems to need a little back pressure to run smoothly.
Of course that quietens it down some, so I took the insert back out and went with a different tuner that got the idle a little smoother than Dano's tune did.