Toluene, Xylene, methanol and thinners. Octane boosters!
24 December 2014 | 10:38 AM
#31
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From: harlow
Read it carefully again though. He isn't saying 20% of either, he's saying 20% of both otherwise known as Scottimax 
He turned away from it long ago and now uses proper race fuel in his car, that really says it all. If he still rated it as highly he'd still be using it as it's far cheaper
In my experience 20% meth added to Vpower or Tesco 99 yields approx 10% more power from most setups assuming they are knock limited on pump fuel alone.
It isn't all about the octane content either, don't get hung up on that as meth has more to offer in terms of it's cooling properties over toluene or xylene.
I like that you're always looking left field and admire greatly your work on the Audi gearbox, but when it comes to fuel additives it isn't necessary to experiment when everything you're trying has been done to death.
He turned away from it long ago and now uses proper race fuel in his car, that really says it all. If he still rated it as highly he'd still be using it as it's far cheaper
In my experience 20% meth added to Vpower or Tesco 99 yields approx 10% more power from most setups assuming they are knock limited on pump fuel alone.
It isn't all about the octane content either, don't get hung up on that as meth has more to offer in terms of it's cooling properties over toluene or xylene.
I like that you're always looking left field and admire greatly your work on the Audi gearbox, but when it comes to fuel additives it isn't necessary to experiment when everything you're trying has been done to death.
Certainly going to try out fuel additives in the near future once I start pushing my fresh engine.
I can get methanol fairly easy, of that's the best route then I have no problem trying it out.
24 December 2014 | 11:03 AM
#32
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From: harlow
If running 20% methanol mix I take it you are looking to richen up the fuel map as more methanol is required for the same AFR?
How much more are you looking to inject? Say my car is tuned to 11.5:1 on v power and I then put 20% methanol in it, using the wideband as AFR (therefore it doesn't know any different) what would I expect my AFR to drop to without adjustment? 12.5:1?
Just re tune to 11.5 and save that map as the 20% meth map
How much more are you looking to inject? Say my car is tuned to 11.5:1 on v power and I then put 20% methanol in it, using the wideband as AFR (therefore it doesn't know any different) what would I expect my AFR to drop to without adjustment? 12.5:1?
Just re tune to 11.5 and save that map as the 20% meth map
24 December 2014 | 12:21 PM
#33
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From: Enginetuner Plymouth for 4wd RR Mapping Apexi Ecutek Alcatek Proper Garage More than just a laptop!
Yes you'll have to richen it up a fair bit, if you only have on overall map adjust try 1.1 as a multiplier to start with, it'll be in the ball park.
24 December 2014 | 02:20 PM
#34
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From: harlow
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