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The mkiv Supra Owners Club

Custom Map for 95 Octane


Jellybean

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Just use maxol e5, they claim 99 octain with it.

 

I always use this with the supra & the old evo 7. I have evo scan & plugged it into the evo with the maxol fuel, drove the nuts out of it & kept an eye on the live data & it was 100%. It also had an octain counter on evo scan which read 100% i think on a really hot day in top gear & full load it went to 99% then back up.

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Just use maxol e5, they claim 99 octain with it.

 

I always use this with the supra & the old evo 7. I have evo scan & plugged it into the evo with the maxol fuel, drove the nuts out of it & kept an eye on the live data & it was 100%. It also had an octain counter on evo scan which read 100% i think on a really hot day in top gear & full load it went to 99% then back up.

 

I tried this before and reset the ECU(disconnect the battery for a few mins) ; I find she runs best on Texaco ; just sluggish on Maxol , the 99 octane claim I would put money on it ; it is bogus

 

Ethanol has an octane of 113. This means that E5 (5% ethanol, 95% RON95) has an octane of only 96. You need E20 to get an octane of 99

 

What I was considering was, mixing with Sunoco Supreme 114 @ 25% minimum

 

In Ireland, €130 all in per 25 litre drum but carriage is 80+ vat :(

 

http://www.aaoil.co.uk/racing-Sunoco-Supreme-leaded-racing-fuel

 

Full tank is 60 liters at 25% is 15 liters Sunoco and remainder 95 ron pump fuel ;so you are talking 78 euro per tank to have use 15 liters of Sunoco ; very $$$$$

Edited by Jellybean (see edit history)
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I tried this before and reset the ECU(disconnect the battery for a few mins) ; I find she runs best on Texaco ; just sluggish on Maxol , the 99 octane claim I would put money on it ; it is bogus

 

Ethanol has an octane of 113. This means that E5 (5% ethanol, 95% RON95) has an octane of only 96. You need E20 to get an octane of 99

 

What I was considering was, mixing with Sunoco Supreme 114 @ 25% minimum

 

In Ireland, €130 all in per 25 litre drum but carriage is 80+ vat :(

 

http://www.aaoil.co.uk/racing-Sunoco-Supreme-leaded-racing-fuel

 

Full tank is 60 liters at 25% is 15 liters Sunoco and remainder 95 ron pump fuel ;so you are talking 78 euro per tank to have use 15 liters of Sunoco ; very $$$$$

 

Hmmm that's strange it would be sluggish as if anything it should be better than texaco. I tried a few different places with the evoscan & the evo much prefered the e5 but then again cars are funny with fuel, just a shame shell pulled out from ireland. If your worried about knock though you could try running lucas octain booster which gets good results.

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I tried this before and reset the ECU(disconnect the battery for a few mins) ; I find she runs best on Texaco ; just sluggish on Maxol , the 99 octane claim I would put money on it ; it is bogus

 

Did you get E5? Links for stations here. Also if your ECU is a sard it could be mapped for a higher again octane as mentioned previously. My Jspec runs fine on E5, its closer to 98 then 99 afaik though. Hopefully it'll be fine with BPU as well.

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Hmmm that's strange it would be sluggish as if anything it should be better than texaco. I tried a few different places with the evoscan & the evo much prefered the e5 but then again cars are funny with fuel, just a shame shell pulled out from ireland. If your worried about knock though you could try running lucas octain booster which gets good results.

 

I had a look into Octane boosters, if you go by their Octane rating (if it is to be belived) I would need to use 3 bottles per full tank, most of the octane boosters cost 12 euro a pop so 36 euro on top of a full tank starts to get very $$$$$

 

Thats why I was looking at Sunoco, at least you are sure of the octane rating

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Did you get E5? Links for stations here. Also if your ECU is a sard it could be mapped for a higher again octane as mentioned previously. My Jspec runs fine on E5, its closer to 98 then 99 afaik though. Hopefully it'll be fine with BPU as well.

 

I used the one in Baldoyle Road Baldoyle Dublin 13 a few times , she runs better on Texaco ; same with Simons Skyline

 

I know Robbie (TDP) did try the E5 when mapping cars; from what I remember they had inconsistant fuel batchs

 

They recommended sticking to Texaco and Esso for consistancy, they found these to be the most stable

 

I will try it again! But I definetly dont think it is even 98 octane; I think the AA did a test on the fuel , I will see if I can find it

 

A few of the guys here were mixing X % of E85 and Petrol to up the Octane

Edited by Jellybean (see edit history)
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