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Discussion Starter · #1 ·
i am thinking of running octane booster in my jabba'd agu golf. it is set up to run 97ron at the moment.and anyone know if its any good?
 

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I believe the ECU will only retard, not advance.
Adding octane booster will only help you if your ECU is already pulling timing.

How about manually advancing with Lemmiwinks or Custom Settings?
A laptop and a serial vagcom cable is needed though.
 

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Discussion Starter · #3 ·
gary is this poss on an agu engine. also whats lemmiwinks? would a dealer be able to advance it if so by how much?
 

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gary is this poss on an agu engine. also whats lemmiwinks?
Good question regarding working with AGU, anybody??

Lemmiwinks is a small program written by Revo but not supported by them as it was never meant to be released.
Its used for changing a few parameters.

If your ECU wont support it then you may need to get Jabba to alter your map.
 

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Discussion Starter · #5 ·
ok thanks gary, any one know if lemmiwinks will work with agu? also gary it it worth doing ie, power gains and power delivery?
 

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That really depends on your current map.

If timing is conservative then it would be in your interests (power wise) to advance if you use BP Ultimate, Optimax or Octane Booster.
It would be a good idea to log your timing CF's (Block 020) and knock sensors (026) with vagcom to see where you stand at present.

I can certainly feel the difference when I advance and retard timing, as James (JBS) says, its not all about boost.
 

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I wouldn't bother going to all that... just lob a couple of bottles of millers CVL Turbo or Pro Blend Nitro Power in and fill up with 98 octaine gas! it does make a difference.... my Jabba'd motor responds really well to octaine booster... I have the Jabba varible boost controller thou which I make sure is turned up fully.... octaine booster is great once in a while but soon gives my wallet the right hump! extra 16-18 odd quid every fill up is a right drag....
 

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Discussion Starter · #10 ·
its only about ?3 a tank so im not botherd about the money if i can squeez a bit mone out of it....its the nos stuff thats expensive[:O]
 

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From a techinical side. As i work in a garage.(Mercedes-Benz) If you change your fuel it will take a few tankfuls before the ECU adapts to it's new fuel octane.

Basically the timing is always being advanced by the ECU till it detects pinking(detination) from the knock sensor then it retards the timing to a safe point. say 5degrees from pinking then starts advancing again. This is so it's always running at it's optimum performance.

With a higher RON fuel detination occurs later on so the timing advances further giving more power output.

I think thats right but will have to double check at work by looking up a few things in a tech manual or on the pc as it all is now.
 

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Hmmm... at ?3 a tank I cant see it being upto much to be honest! the only ones I've bought and noticed a difference is CVL Turbo and Pro Blend and to fully dose a tank with ether is 16-18 odd quid... I'd save the 3 quid stuff for the Halfords shelf and have another pint instead....
 

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Lemmiwinks and custom settings won't work the AGU ECU.

As for the timing advancing it must be different on mercs because on VW's it starts at the default settings and can only retard from there not advance, so as Gary says you'll only see an improvement if it's retarding at the moment. You really need to log with vagcom so you can see what's going on.
 

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Discussion Starter · #15 ·
i have the use of vagcom. what do i need to be setting the timeing to and will vagcom tell me how far advanced my timming is?
 

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Discussion Starter · #16 ·
Hmmm... at ?3 a tank I cant see it being upto much to be honest! the only ones I've bought and noticed a difference is CVL Turbo and Pro Blend and to fully dose a tank with ether is 16-18 odd quid... I'd save the 3 quid stuff for the Halfords shelf and have another pint instead....
all the boosters ive seen are around ?3/?4 per tank, thats millers(+2 octanes) visco(+3 octanes) and some more that i cant remember there names. the only ones i could see at ?16/18 per tank are the nos ones but i dont know how they work. i belive gary uses millers and is very happy with it, from what i remember on an old post.
 

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I think Eddy H is right. Trying to remeber back to the days i was at college about 4 years ago! But what he says does sound about right. The ECU will only do what it's been told to do by programming
 

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What needs to be understood is that it won't advance but the fact you might already be being retatrded slightly means that using octane booster means as adaptation learns you can be in a more advanced state than you were previously, make sense?
 

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Discussion Starter · #19 ·
surely if im retatrded now and the ecu cant advance then it will make no differance. do you mean if im already advanced a little it may make a differance? sorry if im missing something but im not up on timeing ect.
 

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You will be more advanced after addition of octane boosters and an ECU reset, if your map is currently retarding, if it isnt then octane boosters will be of no benefit.
If thats the case then you need your timing map advancing.
 
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