How many of you have found no difference by using Optimax
#1
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As it says, how many of you have found that Optimax made little or no difference (sorry to dig up another Optimax thread)? I tried it a few months ago, reset the ECU and used it for a few weeks but didn't seem to notice any difference .Thinking of giving it another go ,but thought I would see what you lot think .
Standard UK MY99
Thanks
Dave.
[Edited by IN THE STICKS - 6/6/2003 10:15:27 AM]
Standard UK MY99
Thanks
Dave.
[Edited by IN THE STICKS - 6/6/2003 10:15:27 AM]
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I think the MY99 ECU does (but I stand to be corrected ) but I did do the famous ECU reset at the time .
Dave.
Dave.
#5
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Dave, doing an ecu reset will only put your ecu back to the factory settings i.e 95Ron, hence prob why your getting no gain?? but if it is capable off learning upwards, then maybe given time....
you might gain
you might gain
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Thanks Andy , so perhaps I'll give it another go and stick with it without a reset and see if it 'learns'
Thanks chaps
But it still seems a few of you notice no change though !
[Edited by IN THE STICKS - 6/6/2003 10:44:25 AM]
Thanks chaps
But it still seems a few of you notice no change though !
[Edited by IN THE STICKS - 6/6/2003 10:44:25 AM]
#11
I should have said that while I cant notice any difference performance-wise I definitely get better mpg running SUL or optimax so presumably the engine is running more efficiently.
Steve
Steve
#12
found sul worse mpg than nul and no performance difference - test done as scientifically as poss - same route, same driving style, enough fuel between the switch for the ecu to learn:-
http://www.riftzone.fsnet.co.uk/scoobown.xls
http://www.riftzone.fsnet.co.uk/scoobown.xls
#17
There may be no great benefit noticeable benefit when driving, but for those owners running more boost or modding the extra octane rating does make a difference.
Thats why cars that are mapped to run optimax only and large doses of booster get better results than those not, bob rawle will confirm that running optimax (and booster) will allow him to increase ignition advance far beyond running nul (which he would probably not map for!).
Think of it as a safety measure not necessarily a performance increasing one.
[Edited by ptholt - 6/6/2003 1:43:38 PM]
Thats why cars that are mapped to run optimax only and large doses of booster get better results than those not, bob rawle will confirm that running optimax (and booster) will allow him to increase ignition advance far beyond running nul (which he would probably not map for!).
Think of it as a safety measure not necessarily a performance increasing one.
[Edited by ptholt - 6/6/2003 1:43:38 PM]
#18
pt,
I have to agree with that but the problem is that that is not how Shell are marketing Optimax though.
Shell appear to be marketing it more along the lines of it will clean up your engine and provide better responsivness from the cleaning effect rather than from the octane rating but most 'performance car enthusiasts' tend to expect the increase in performance to come from the higher octane which may not be the case.
I've asked Shell quite a few questions about this and I am still awaiting a few responses.
Andy
I have to agree with that but the problem is that that is not how Shell are marketing Optimax though.
Shell appear to be marketing it more along the lines of it will clean up your engine and provide better responsivness from the cleaning effect rather than from the octane rating but most 'performance car enthusiasts' tend to expect the increase in performance to come from the higher octane which may not be the case.
I've asked Shell quite a few questions about this and I am still awaiting a few responses.
Andy
#19
ahhh im with you now, i took the above the wrong way.
admittedly in my own sti5 there was not much noticable difference in the driving seat, the only time any obvious improvement coming from the increased advance it allowed the car to run.
admittedly in my own sti5 there was not much noticable difference in the driving seat, the only time any obvious improvement coming from the increased advance it allowed the car to run.
#22
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No noticeable difference between SUL & Optimax, I stick to Optimax, as its a lot cheaper round these parts
in my old MY99 Sport, I noticed quite a difference between SUL & NUL tho
in my old MY99 Sport, I noticed quite a difference between SUL & NUL tho
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I don't think anyone would chance mapping a punters car to run on 100 ron in this country.
Too risky.
You may just forget to put that octane booster in.Go for a Razzz.
Pop goes the weasel.
Too risky.
You may just forget to put that octane booster in.Go for a Razzz.
Pop goes the weasel.