remap? octane?
#1
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remap? octane?
going for remap tomorrow with JGM, 95% of the time i do fill the car with super/momentum etc.
have read about people getting cars mapped for super or unleaded?
whats the deal? basically i'd only ever put in unleaded 95 RON in an emergency like on the mway,
have read about people getting cars mapped for super or unleaded?
whats the deal? basically i'd only ever put in unleaded 95 RON in an emergency like on the mway,
#6
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Map it on 97 ron, which you can pretty much get anywhere, but put in 99ron when you can so when running the car hard there is no need to worry about early detenation. This is also good for a tracked car as you don't ever need to worry about putting octane booster in the car.
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Mention this when setting up on your car as depending on the car I may be able to do two maps.
If mapped for 99ron and you cant get it using 95 and driving off boost wont harm it.
Depends on the mods and the car 95 re 99 can make a big or a little power difference.
Also find that 95ron returns less mpg so you nearly get same cost difference.
Simon
If mapped for 99ron and you cant get it using 95 and driving off boost wont harm it.
Depends on the mods and the car 95 re 99 can make a big or a little power difference.
Also find that 95ron returns less mpg so you nearly get same cost difference.
Simon
#13
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Simon, just a thought, is it possible to use Methanol as a octane booster, and if so how does this work in terms of % ?
In the past I have ran allsorts of fuel dependant on the car and map, and when I have used 99Ron with 20% Methanol. I’m guessing I increase the octane to around 106Ron for the 20% mix ?!?!
So if Methanol is around 108.5Ron, then is it not a case that someone could add 4% Methanol to 95Ron to act as an octane booster which should lift the cotane to 99Ron +?
The only reason I ask is because (as already said above) I also struggle for local Shell or Tesco garages, so if this is an option then I may consider keeping a container of say 2 Litres of Methanol in the boot that can be used if I become Vpowerless. 2 Litres of Methanol to 48 Litres of 95Ron should work out at 99+Ron ?!??!
Bloody hell I’m loosing myself…!
This may also help the OP.....
Rob
In the past I have ran allsorts of fuel dependant on the car and map, and when I have used 99Ron with 20% Methanol. I’m guessing I increase the octane to around 106Ron for the 20% mix ?!?!
So if Methanol is around 108.5Ron, then is it not a case that someone could add 4% Methanol to 95Ron to act as an octane booster which should lift the cotane to 99Ron +?
The only reason I ask is because (as already said above) I also struggle for local Shell or Tesco garages, so if this is an option then I may consider keeping a container of say 2 Litres of Methanol in the boot that can be used if I become Vpowerless. 2 Litres of Methanol to 48 Litres of 95Ron should work out at 99+Ron ?!??!
Bloody hell I’m loosing myself…!
This may also help the OP.....
Rob
#17
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They didn’t map the engine to each fuel on the Subaru before each run, so not optimised for each. You may find the difference will be much less than that. That’s what I was told by Martyn @ Enginetuner when we were last talking about this. He suggested we might see 7bhp-ish drop.
Last edited by BrownPantsRacing; 23 March 2012 at 12:06 AM. Reason: edited for accuracy
#22
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NF Race Formula is considered a good octane booster, a lot of the others are not particularly good at increasing octane.
Interesting website http://www.fueltechexperts.com/2008/...which-is-best/
NF Race Formula available from importcarparts.co.uk
PS. I'm not on comission
Interesting website http://www.fueltechexperts.com/2008/...which-is-best/
NF Race Formula available from importcarparts.co.uk
PS. I'm not on comission
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