? about octane and brenspeed

[brad25]

I just recieved my sct-2 back from brenspeed today with some newer tunes. I live in oregon and we only go up to 92 octane and I wrote tthat on the list I sent but on the sct it goes, 87,89 and93. Is it safe to use the 93? I am going to call him tomorrow and see for sure. I had to try it and it was a night and day difference from his original tune from about a year ago. Just wanted some opinions, thanks, Brad.

 

[kooldawg6]

I have seen people on here running the 93 octane tune with the 87 octane gas and they say it makes a world of difference. I have not seen how long they run it like that.

 

[Emay]

Tons of people run the 87 with a 93 tune. What they don't do is drive the card excessively hard while doing so.

Things to watch for when you run your 97 tune on low octane fuel is "pinging" or "detonation". Which is combustion that occurs late. If you have this occurring then you shouldn't push the car hard with that tank of fuel or slide your lower tune in.

You will mostly hear and feel these things when approaching red line. If it occurs, just drive more conservatively.

You can drive all day long on 87 fuel with a 93 tune and be perfectly safe. Just don't push the car when doing so. 3/4 throttle and up, and reaching redline rpm ranges will net you the detonation mentioned.

 

[seattlegt]

I have the Demolet Tunable Induction intake and tune. When I ordered it from Demolet, I told him that we only have 92 octane here in Washinton. He said that I could run the 93 octane tune and would probably be fine. He said to just listen for any detonation and change the tune if needed.

 

[Warlok]

Yes sir!

Tons of people run the 87 with a 93 tune. What they don't do is drive the card excessively hard while doing so.

Things to watch for when you run your 97 tune on low octane fuel is "pinging" or "detonation". Which is combustion that occurs late. If you have this occurring then you shouldn't push the car hard with that tank of fuel or slide your lower tune in.

You will mostly hear and feel these things when approaching red line. If it occurs, just drive more conservatively.

You can drive all day long on 87 fuel with a 93 tune and be perfectly safe. Just don't push the car when doing so. 3/4 throttle and up, and reaching redline rpm ranges will net you the detonation mentioned.

Emay is exactly right.

 

[The Fang]

I run most of the gas out, put in what I want then tune it. When changing the tune it will rattle until it starts to drink the newer gas.