scholesy

I'm having my blob STI mapped tomorrow by ZEN performance and I'm looking for some advice on fuel selection, in the town I live the best fuel I can get is BP ultimate, I'd have to drive about 20 miles round trip to get v power.

Would there be a big difference between having the car mapped on BP ultimate and V power in driveability and outright power?

Thanks in advance guys

Tidgy

is tesco near you? they do 99 ron

scholesy

nope even further away than the shell garage!

Tidgy

bummer

will loose power and responce but needs must

the shreksta

iTrader: (20)

20 mile round trip...............thats an excuse to go out for a weekend blast and fill up

brendy76

iTrader: (6)

Id dare say the difference wouldnt be felt by the **** dyno.

scholesy

Just filled up with v power ready for tomorrow. Have to say I felt a definite difference in smoothness compared with bp ultimate. I'll just have to use vpower in future to suit the map!

trevsjwood

iTrader: (2)

you must live out in the sticks, there are 6 Shell garages selling V-power in the Peterborough area:- PE1 5YB, PE2 8RL,PE3 9TX, PE4 6AX, PE7 3UQ, PE8 6HA. info from the Shell station locator on their website.
Trev

rb5 stu

You should never use bp ultimate in an impreza, its not suited to the impreza engine.

stevemoir

iTrader: (24)

V power only

BP, tesco only in an emergency only ever ran my cars on shell as above 20 miles away is a good sprint back fill up a few jerry cans and your sorted

V power was pricy (now down to 120p)where I am couldn't be happier

Steve

brendy76

iTrader: (6)

I should bin my wrx engine now then? ive mapped it for 95...the horrors!!! Oddly still goes well, must be a freak occurrance?

rb5 stu

Yours isnt that old bug that goes about bangor is it?

rb5 stu

It will run perfect on 50 ron if its mapped for it. lol

stevemoir

iTrader: (24)

Well if it's been mapped for It then it's going to be okay

What people are trying to say the best fuel to get it mapped on is shell v power

Steve

brendy76

iTrader: (6)

hehe. up yours stu.

rb5 stu

Didnt know you knew this user name. lol

brendy76

iTrader: (6)

lol knew that Aaaaaaaages ago.

drakesnow

Old debate, but a a valid question.

V power hands down, tesco a not too far off second. Our engines love having the highest octane they can get- from both a performance and longevity standpoint.

I used to drive a bit out of my way for v power on both my cars, and trust me, its worth it. Yes you will be able to tell the difference on the dyno !
(But more importantly, check something Duncan's website he has a writeup on it )

bludgod

iTrader: (3)

this one:
http://www.racedynamix.co.uk/remap/f...ke-difference/

and I would take maxol 95 over the BP ultimate we get in NI - the extra cost doesn't seem to justify the drop in timing compared to what I can run with Topaz or Go super.

brendy76

iTrader: (6)

Meh, tescos, asda, sainsburys 95/97 bp etc all the same to me.. Its my daily so no need to wring every last shetland pony out of her and she goes rightly regardless.

euan_r

iTrader: (29)

its a curious one though, outwith subaru forums (can probably class all modern turbo vehicles in this) most tune for lowest ron fuel avaliable as saftey measure rather than try to get all you can out of it.

brendy76

iTrader: (6)

Yea, I set mine for healthy timing rather than aggressive, you can still make up for timing with a little boost etc and still come away with very good results, yes you could make another 5-10hp but really, unless its for bragging ultimate numbers or running quarter miles (which if the need ever arose, I can set the timing higher and fill the tank with the really good stuff), why bother?

bludgod

iTrader: (3)

not just a horsepower gain though, if you tune the map to take advantage of the higher octane fuel you can also get more MPG on a cruise too but if you have to drive 30 miles to get your super unleaded then it's probably not worth it.

better to do what brendy has done and have the car mapped for the fuel you use and be happy with the results.

Zuber

I use Tesco 99 with 3ml of NF Nitros Formula to 1 litre no re map on 6S ECU on V3 Sti and it loves it!

BBB3

iTrader: (7)

Just go to murco

Jonnys3

I've run my WRX wagon on Tesco 99 / Momentum for the past 7 years and it hasn't missed a beat - always get slightly better MPG than V-Power too.

scholesy

I'm just going to go for a map to suit vpower and just fill up the whole tank rather than half as I usually do. Thanks for all the advice and input guys