March 15, 201510 yr Im thinking about using 95, since I will be using the car for working mainly and its quite cheaper :P Would anything wrong happen to the car if I start using 95? Thanks! :D
March 16, 201510 yr The only time you can run 95 in a turbo car is in emergency. And then you should try to keep the car off boost otherwise you will damage your car.
March 16, 201510 yr i have always run super on mine, but i did notice the other day on the inside of the fuel flap it says to run on 95ron
March 16, 201510 yr I put normal unleaded in mine 1 day from morrisons just to get to the shell station were I fill up,all most straight away you could feel difference,it was real lumpy,a don't no if it just cause supermarkets get the **** petrol to sell it cheap.a allways use shell,bit more expencive but can feel the dirrence in my opinion.
March 16, 201510 yr in the manual it states to use 98, the only way i was told by a mapper to run 95 is if you have it remapped for it, but you loose bhp.
March 16, 201510 yr Because the impreza run hotter than the average car 95 Ron is less stable in the chamber. This is what causes knock or pinking. the engine picks up on this and retards the timing. (Basic picture borrowed from Google) excessive knock can cause damage. [emoji4]
March 16, 201510 yr I run mine on 98 but it's say 95 minimum in the book. I have seen on 5th gear they did a test and am impreza had a 15bhp gain over supermarket fuel if I remember correctly. It's about £5 a tank more so got to work out if it's worth it to you. I have thought about using shell basic fuel to see if I can feel a difference. All cars sold in the UK must run on 95 so I guess it will work but who wants to risk it for a few quid. -- I make Films and Website for people
March 16, 201510 yr Author Yeah, I guess in case of emergency, is fine then... :) Believe it or not, here in Spain not every gas station has 98... just for the record if someone is coming to spain with the scooby :P
March 16, 201510 yr I have to plan my journey around what petrol stations I'll pass and of they have high octane fuel.
March 16, 201510 yr Get it mapped for both ☺ have my vpower standard map and an emergency supermarket/95ron map incase i ever get caught short
March 16, 201510 yr Get it mapped for both [emoji5] have my vpower standard map and an emergency supermarket/95ron map incase i ever get caught shortHow do you switch maps? Or is it use like the standard ecu that just looks at the timing depending on the fuel. -- I make Films and Website for people
March 16, 201510 yr I've an esl board in my ecu so if I want to change map I have to go through a process of turning the ignition on throttling up turning off and releasing the throttle pedal (i think) then the management light will flash once or twice depending on which one I want. Not used it yet as only been running the twin maps for a month and I have half a dozen shell stations with vpower within 5 miles of Leeds City Centre
March 16, 201510 yr This is from my bugeye wrx uk fuel cap,so always used super,now nitro 99ron over previous 97ron No mention of unleaded................95ron
March 16, 201510 yr I'll have a look in morning but I'm sure my UK classic has a sticker saying only to use super.
March 16, 201510 yr I think in the U.S. you get 93 and 95 as super so we should be ok running on 95 if that's the best they get however it should be better running on 98. -- I make Films and Website for people
March 16, 201510 yr The maps are made for the fuel. That's why jap imports have to be run on high octane. Jdm are mapped for it.
March 16, 201510 yr Yes ,iirc jap have 101ron...........maybe higher now as i am going back a good few years. Our petrol is not the best,fuel in the USA is crap at best................but boy is it a lot cheaper :( Not as cheap as Saudi though..........................19p a litre of super!
March 16, 201510 yr Wow we all drive subarus in the wrong part of the world. They must look at us and think w are rich. But yer the yanks think 25+ mpg is very good. -- I make Films and Website for people
March 17, 201510 yr Wow we all drive subarus in the wrong part of the world. They must look at us and think w are rich. But yer the yanks think 25+ mpg is very good. I worked out my average mpg to be about 19.5 so far, 25+ would be incredible! Tesco momentum is 99RON and about the same price as other garages SUL (my local one is only 97). Worth it if you happen to be near one... I think I payed about 114.9 last time and fuel's pretty pricey around my way.
Create an account or sign in to comment