95 plus ulp in a vt?

[vtdan]

Meh, I only ever run E10 in my VT. Have done for at least 40,000k's and no problems.

I still manage to get 450-550k's around town dependent on my driving style. A long freeway trip will see me getting about 700k's + to a tank.

 

[Brett_jjj]

doesn't the knock sensor etc. detect its running on 95 and advance timing?

Yes it does. The ECU will take full advantage of the higher octane fuel, and will let the ignition timing advance further. I always use 98 octane fuels in my VSV6, it starts and runs better,and I get better fuel economy. Getting a tune done will let the ECU take even more advantage of higher octane fuels, and will allow the ECU to advance the ignition timing even further still, but even the standard tune will take advantage and run better on higher octane fuels. Some people say that they dont notice any difference from running higher octane fuels. Id say that their car is probably not running 100% to begin with if they cant notice any difference.

 

[Not_An_Abba_Fan]

The ECU can't detect octane. It has a set of timing maps that it uses, and if it detects knock it will retard the timing, but it can't advance the timing to suit the fuel used. It will only run the maximum advance tuned by the factory. The only benefit the car will see running 95 or 98 will be the cleaning properties of the fuel. The car probably runs better because it has cleaned the injectors.

 

[GTS-Replica]

Dad allways uses e10 for local etc its fine but for long distance he uses premuim or normal un leded. They other week he filled it up with premium and we got lots of extral ks un like e10 so i think premiums the go and it doesent burn as quick.

 

[Full Spectrum]

If anyone thinks a little change in quality of petrol is nothing. Well hear this. My car chugs on shells V ****. Starts ****, runs ****, and basically will jerk and miss out of the blue. Ran that stuff for 2 months. Went back to BP ultimate and second tank it was all back to normal. My car has always had a massive disliking to shells premium fuel and i don't know why that is.

 

[som]

I tow a tinny to Darwin from Brisbane once a year.A few years ago I decided to try Premium unleaded on the way up and 91 on the way back.I've used 91 ever since that trip cos the economy was identical.

 

[bones308]

hi
I've owned and still own a VT1999 S-pack from new (180'000km) and from day one i have run 95 octane
cars runs cleaner , less fuel???????? but have noticed at every service the throttle body has no carbon build up?