SimonEvoExtreme

NO! you cannot run an Evo on 95 ron. However, if you get a PE remap or a fully programmable ECU such as Gems, then of course you can although you wouldn't want to.

Scoob99

iTrader: (1)

I run My UK 98 model on 95 without any problems asked the dealer what difference it would make and he told me it was a personal thing.........I too would like to know what differance it would make and do I do it straight away or mix half and half.
Cheers
Colin

chrisp

http://www.iwoc.co.uk/modsecu.html

mutant_matt

Jon,

No hard evidence? What about the fact that Prodrive quote higher power figures for new age PPP running on Super than on NUL.....

Also, here is some more hard evidence, Optimax Dyno Thread

Matt

dhorwich

Read this.... just coz you cant feel a differece doesnt mean its crap....

http://www.autospeed.com/A_0429/page1.html?src=suggestions

Dan

ChrisR-C

I use Optimax all the time and also use silkolene octane booster on top the car runs realy clean and accelerates without a glitch my scoob is an MY99 wrx sti type R and all ive done is put a K&N panel filter in dont think it needs much more .

mutant_matt

Autospeed Optimax Dyno Tests

tinydelete

add a bottle of millers octane boost and you will notice the difference then

JKJ2

John, I am of the same opinion, that Optimax is a con, or does not suit my car, but my PPP '98 spec runs alot better on good old SUL, better top end/mid range/mpg.

boultsy

As matt mentioned Prodrive have a graph for the MY01 PPP and the difference between 95RON and 97RON is around 5 bhp (can't remember if this is pre or post PPP) so optimax I'd imagine would be as good if not better.

boultsy

and as chrisp says

it CORNERs better on SUL as well

[Edited by boultsy - 5/5/2002 8:59:59 AM]

stephen emery

so is it better to use sul or optimax with my01 wrx ppp?
steve

MARK MORRIS

i used to run my p1 on super and octane booster, now just optimax, feels the same to me
mark

Turbo_Six

My Puglet likes Optimax, or indeed SUL of any kind. It pulls harder and sounds smoother, perhaps due to a little detonation on 95 unleaded (Heavily skimmed head).

I'm sticking to SUL and Optimax when I can get it - there's not a Shell garage for miles round here [img]images/smilies/mad.gif[/img]

velryba

I have MY95 uk turbo.

1st dyno test - scoobysport b/b, 95RON

227bhp / 202 lbs/ft......6740 rpm

2nd dyno test - scoobyspost b/b, decat center section, Optimax

243bhp / 220 lbs/ft......6600 rpm

the line at the 2nd test is much smoother!!!

if you want I can scan the graphs
(let me know by mail)

robert

mutant_matt

I also just finished reading the Optimax test in this months EVO and they agree that it gives a small amount of performance increase. Have a read, it's very interesting.....

Matt

Jon1T

Read it - I might just give it another try for a longer 'test' period........

mutant_matt

Perhaps your "butt dyno" isn't sensitive enough??

Matt

Jon1T

a few years of biking has given my butt dyno a finely honed precision, and an uncanny ability to pucker up when going round a bend and spotting a large patch of oil....

mutant_matt

M8,

Hopefully a few more years of bike riding will enable you to *not* pucker up at the sight of sharp bends and slippery patches on the road.....it took me a good 10 years to overcome that instinct (along with the nasty instinct to brake when you think you're going too fast into a corner and not closing the throttle when the rear starts to slide/front bars start to "slap")

Matt