97 or 99

[legrat]

hi all ,just a quick question went to tescos to put in my normal 99 to find out they had sold out the next garage available was a esso one and as i was desperate thought i would put anything in as was on my way to work and was running late for night shiftonly to discover they sold 97 octane so put some in and away i went the car is running lovely on it but should i continue using or revert back to the 99 over to the experts

[Gordon]

I use any super unleaded and have not had any bad side effects

[legrat]

cheers gordon i remenber mike saying he runs his 97 so will continue using then ?

[James]

I try and use V-power but, to be honest, if I can't get any I'm happy to put any super in.

[KRISS]

i only use tesco 99 or v-power i think out off 200 tanks of fuel ive only used 97 once.

bit stupid as it shoudl run fine on 97 and im paying 10p / litre more

[Moff]

If you have a standard ECU, it will be expecting 100 ron fuel as thats what they have in Japland, so higher the better. If you have an after market ecu you should use whatever it was mapped on in my book.

[legrat]

cheers moff am running standard ecu at the moment so untill i get that sorted will go back to 99

[ray cee]

Something i noticed on the tesco advert thats on the TV at the moment when advertising the 5p a litre off when you spend £50 on shopping.

They show a picture of 3 fuel pumps , im sure the super unleaded pump has a sticker on it saying 97....

Any body else noticed this or is it just me ??

Ray

[legrat]

i think it must be you mate am sure my tesco says 99

[Jay]

Originally Posted by Moff

If you have a standard ECU, it will be expecting 100 ron fuel as thats what they have in Japland, so higher the better. If you have an after market ecu you should use whatever it was mapped on in my book.

I know it`s all been tried and tested, but surely with the standard ecu`s learning capability and knock sensing it should be able to adjust for other fuel. I`m sure it will run into problems with too many variables ie, breathing mods plus boost raised. But on an engine running basic mods i would have thought it would cope.

Feel free to kick me if i`m wrong.

Obviously i understand the problems with and aftermarket ecu as it can`t adjust for these variables.

[Andy Kain]

97, its the future init!

I have been using it for a long time now and am going to get 97 mapped next Sat at MGT Racing.. cant wait

[legrat]

Originally Posted by Jay

I know it`s all been tried and tested, but surely with the standard ecu`s learning capability and knock sensing it should be able to adjust for other fuel. I`m sure it will run into problems with too many variables ie, breathing mods plus boost raised. But on an engine running basic mods i would have thought it would cope.

Feel free to kick me if i`m wrong.

Obviously i understand the problems with and aftermarket ecu as it can`t adjust for these variables.

cheers for reply mate have had a few minor mods induction changed ,decat and after market exhaust fitted so should happily run on origonal ecu ?

[Bubble]

If the standard ECU detects DET, it switches to another map with less ignition advance and chucks in more fuel to safeguard the engine. The replacement Apexi Power FC does not have this feature, so you have to keep an eye on your DET levels. The HKS F Con pro is a piggy back, so retains the stock ECU DET control.

I use V-Power, or Tesco's 99, which I think is a bit of a con, as it's definitely more than 99p round here

[andybob]

the ecu will only learn from a re-set what type of fuel your running if your gonna swap n change all the time its to much hassle stick to what you commonly use. i re set mine and run on 95ron without problems because of my job situation but i do notice the lack of power

[legrat]

Originally Posted by Bubble

If the standard ECU detects DET, it switches to another map with less ignition advance and chucks in more fuel to safeguard the engine. The replacement Apexi Power FC does not have this feature, so you have to keep an eye on your DET levels. The HKS F Con pro is a piggy back, so retains the stock ECU DET control.

I use V-Power, or Tesco's 99, which I think is a bit of a con, as it's definitely more than 99p round here

somebody please give me a slap but what is DET level