13' Civic Si. Running Reflash. Tune help.

2012+ US/Canadian Civic Si / 2013+ ILX
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ZoloFG4
Posts: 3
Joined: Mon Oct 05, 2026 7:13 pm

13' Civic Si. Running Reflash. Tune help.

Post by ZoloFG4 »

Received my flash pro today and went ahead and used the US CIVIC SI 2012-2014, Hondata Reflash base calibration from the drop down menu. The "first data log" is from the base tune. The other data log is also from the base tune. I decided to tweak the base tune based off a few parameter changes. Wanted to have someone review that "edited reflash" base tune because i am wanting to use it as a starting point to begin tuning my vehicle. From the data logs it looks that my ecu is pulling too much timing. I will be pulling data logs during the week. Currently only running a cat delete 3" exhaust and a 3" cat back exhaust. Data logs are not from the calibration provided but were captured with the base tune stated at the begging of the post.
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ZoloFG4
Posts: 3
Joined: Mon Oct 05, 2026 7:13 pm

Re: 13' Civic Si. Running Reflash. Tune help.

Post by ZoloFG4 »

When tuning fuel, do I start with the 0 degree timing and then move to the next degree mark? Or do you leave 0 degree alone? Going to be running my modified calibration when I get home and begin tuning that file. It’s the one attached to the post prior. Also would 0 degree mostly be my idle and decal?
ZoloFG4
Posts: 3
Joined: Mon Oct 05, 2026 7:13 pm

Re: 13' Civic Si. Running Reflash. Tune help.

Post by ZoloFG4 »

So, I haven’t enabled MAP tuning. I have instead focused on tuning my MAF calibration, since I’m still fully stock other than my exhaust. It’s been fun learning and. Making adjustments to the MAF calibration table. Almost have it dialed in to +\- 1%. Once I know that is dialed in I want to clean up my ignition tables and start making changes to my VTC tables. I’ve played around with googles AI ask feature to generate cleaned up tables from the images of the stock ignition and VTC tables. I’ m not currently running those tables, but want to make those changes after my MAF calibration and AFR are stable. I’m wondering if I should change over to MAP tuning or wait till I get a CAI? I kind of understand cleaning up fuel tables better now when running MAP based tune vs MAF based tune. Any advice would be greatly appreciated.
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