octane

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Had a question for california drivers. I got my honda hatch sport with the TSP stage 1 Ktuner flash and have been just running 91 premium since that's the highest octane we got, but have been tempted to mix a couple gallons of e85 or 100 unleaded with the 91 to make a 93 octane. I don't have an...

So im heavily considering buying the Ktunerv1.2 with the TSP flash for my Honda sport hatch CVT. I wanted to see if I could get some input from people running this tune and specifically here in cali, being that the highest octane we have is 91. How are you knock control levels, and which map do...

Hello everyone! I would just like to say, I'll be driving in the mountains later this week for US 129 (Deals Gap). I sadly can't go when Civicx will be going, so I've decided to go during spring break. I understand that the engine struggles to get air due to the pressure and altitude. Is there...

Does this Civic have variable ignition timing so when I use 89 Octane or 91 I will recieve a performance improvement? (I fell like 89 does when I use it)

Purchased Si last Friday. I asked my salesman what they filled it with and he said regular, which around here is 89 AKI (Anti-knock Index) calculated here as (RON + MON)/2. Owner's manual recommends 91 Octane, so I'm going to try filling it with 91 at the next fill up to see if I notice any...

I have a K&N drop in filter in my Sport Hatch. Got the flashpro and I am about to flash. I'm a total tuning noob so I was wondering if the base 6 psi flash is fine or if there is anything to consider with the supposed additional air flow gained from the K&N. Everything else is stock. Also, after...