Hondata

Hondatas website has a manual on how to install a wide band for an 8th gen civic si.

So I will start there.

Thats what Im asking. Ive been told by multiple tuners I need an aftermarket wideband installed before they will tune it.
(No other car have I had to do this)

I called speed factory before ordering the e-tune and was told the same thing.

I have a 2010 civic si with a hks dry filter and q300 catback on 92 octane. I recently picked up a flashpro and tried the "base tuned map"
I picked up over 40 knocks driving around the block.

So immediately I reached out to a few different tuners looking for an etune. No one will tune with me ...