Jap Imports

What Octane Booster is best, and Do you need to run a import Scooby on them all the time.

gumballer@STI

i use millers power boost on my sti8.

raises the octane about 2ron, so with optimax it should be near 100ron, which helps the cars power and stops it leaning out at the top a bit more.

as far as i know most imports arent mapped to british fuel so may be a good idea. for all it costs.

£2.50-£3.50 depending on who you get it from or who you know

GC8

Some Imprezas need it more than others. An early TDo4-equipped 'Wagon will just about be alright on Optimax; whereas a TD05 car or any car manufactured after the octane rating of Japanese 'Premium' fuel was raised will need octane booster.

Tasberley

i use millers cvl turbo stuff. the best out of the millers range but its also expensive.. i pay £5.20 a bottle for that (special rates ) from a local supplier.. only treats 20litres so need 2 bottles for a tank..

Jap Imports

How Much does the cvl turbo stuff up the octane?

banny sti

iTrader: (68)

It ups it by 4ron according to millers and its good stuff highly recommended.

Jap Imports

so 1 bottle would boost a tank by about 2 octane, If you are ment to use 2 bottle's per tank.

banny sti

iTrader: (68)

Probably, but its recommended that you fill up 25 litres with one bottle of cvl turbo. My brother has the same car as yourself and he uses this stuff and says the car feels awesome.

Jap Imports

Good to get some feedback, cause some of the boosters out there on the market, arnt all that.

screech

nf racing formula octane booster is the strongest booster for a small amount you can get. increases by up to 60 points/6 ron

Jap Imports

So is it safe to use nf racing formula every tank full when using optimax

stockcar

thread in the "group buy" forum that may be of use to you....................

GC8

You dont get a linear increase in RON from octane booster. For example; NF Race adds 2 points per ml/litre. Increasing the dosage to 2ml per litre of fuel adds one further octane point.


Simon

Jap Imports

Sorry , In English Please, Getting late in the night and brain is hard at work

GC8

Twice as much stuff doesnt give twice the benefit.

David_Wallis

I run mine on 106octane race fuel..

its only about 90quid for 25litres

T20Driver

iTrader: (3)

I have a MY05 JDM STi and I do not use octane boosters. Instead, I just had it mapped for UK fuel, although I was recommended to use Optimax (98 RON) or Tesco's (99 RON); and this is what I have done apart from one tankload of Sainsburys (97 RON) ... which didn't seem to affect it all as I was still running it in and not pushing it.

Indeed I was reassured that 97 RON fuel was OK for running about in and getting me home but I should not push the revs/go 'on boost' too much if I did. Something to do with there being intelligent electronics that can work out what fuel is in the car and, to a point, can adjust the timings accordingly.

As a precaution however, I've now bought some Millers Octain Booster through the 'group buy' and have put the bottles with the spare wheel so that if I get caught short at any time I can put practically anything in it with the appropriate number of bottles of booster to ensure that the engine doesn't go 'phut' before I can get some Optimax or Tesco fuel in it.

MarkV

My wagon is 1998 prefacelift May 1998 I think and was imported new - is this TDo4? or too late

Ta

gumballer@STI

i use millers power boost. good stuff

i had to use millers cvl and it was gash IMHO

p1doc

why not get car mapped for optimax,seems to be a lot of faffing about if you need to use octane booster every tank for minimal gains in the real world-apart from david wallis
martin

wide

I am just putting optimax in at the mo but not really caning it , wont let it go over 5k revs (95 wrx). Lots of people say must use booster couple of garages I been to say just use optimax. Dont know what to believe for the best?

flat4_ire

im using 114ron with 95ron, looovely €150 for 25 litres well worth it tho

Nick Read

Or with the way fuel prices are going, why not map for normal 95 octane unleaded and accept that the days of driving our Scoobs around foot to the floor are just over... :-( I'm sure my wagon would still be a pretty decent performer if it was optimised for 95 RON, and it would be a hell of a lot cheaper to run.

Still gutting to have to think like that, but there comes a point where it's mental to be spending £3 or £4 more for a tankful than everyone else just for those occasions when you decide to cane it about!