Gull Force 10 vs BP Ultimate 98

[Guest]

Assuming your car is OK for Ethanol blended fuels, which is better - Gull Force 10 or BP Ultimate 98? Anybody done any tuning on both, or even better, dyno comparisons?

I've read on some forums you can get an extra 2-3 degrees timing on Gull Force 10, but you need to tune to the fuel...

[wrx_lou]

I was told told by my mechanic that the tuner he uses said he got the best dyno results out of force 10. I am assuming it was Dave at Dtech in tga, cause thats who he sent my car to. But I could be wrong. If i remember, i shall ask when i pick my car up.

[Guest Fastfour]

I got warned against getting my car tuned for force 10. They reported that the batches were a little inconsistent compared to normal fuel.

[wrx_lou]

That was my understanding when it first came out, but apparently its good now. again, i will check that out.

[cpt kernow]

Did a couple of tanks of Gul to try it out but got 30-40km's less out of it than Ultilmate.

Always the same kinda driving, so don't it was that

[EJ20T]

thing is ethanol doesnt have as much energy in it per pound as petrol, so you need more of it for any given volume of air. but its got a better knock resistance so you can roll in abit more timing. apples and oranges

[Jammasta]

WB Mixja, is this for the Audi, or you back in a Sub, or something completely new.

[Guest]

on my stagea i got an extra 8kws on force 10.

but the thing i get told is that rubber seals dont last long nor do paper gaskets.

[Koom]

 TURTLE said:

WB Mixja, is this for the Audi, or you back in a Sub, or something completely new.

Do you reckon its the same Mixja from the old forums??

[Guest]

I have also been told that it has produced some good dyno results on cars.

Also that its alot better than when it first came out.

[Joker]

 Koom']

[quote name='TURTLE said:

WB Mixja, is this for the Audi, or you back in a Sub, or something completely new.

/quote]

Do you reckon its the same Mixja from the old forums??

I do

welcome back!

[Guest]

I read somewhere that as the nz rally championship now use pump fuel they tested all the pump fuels.

Gull E10 was the best but higher fuel consumption.

[Koom]

 Qwerty said:

I read somewhere that as the nz rally championship now use pump fuel they tested all the pump fuels.

Gull E10 was the best but higher fuel consumption.

Correct. Especially cause of the amount of boost and timing that the engine's can take with Force 10 over normal 98 octane fuel.

[Guest loren]

so running e10 with a 98 tune will result in leaner mixtures but that won't matter because of more knock resistance?

[Koom]

 loren said:

so running e10 with a 98 tune will result in leaner mixtures but that won't matter because of more knock resistance?

Depends entirely on how much of a "knifeedge" tune you've got.......

Wouldn't take it for granted that it'd be fine and its easy enough to get a power run done on a dyno with Knock Detection setup to make sure.

[Guest DMSREX]

 loren said:

so running e10 with a 98 tune will result in leaner mixtures but that won't matter because of more knock resistance?

Only if you want to live dangerously. Have it dynoed and check mixtures/knock Common sense really.

[Ngarutoa_NZ]

i drive to otherside of town just for Force10, no 98 up north here, & the 95 is like horse pi55 lol

[Guest loren]

I have a wideband O2 sensor... is the stock knock sensor not really up to the task of tuning? not that I intend to try tuning it myself, but just to see if it's safe.

[Koom]

 loren said:

I have a wideband O2 sensor... is the stock knock sensor not really up to the task of tuning? not that I intend to try tuning it myself, but just to see if it's safe.

Really need headphones to be able to listen for knock. You can make knock sensor equipment pretty cheaply, often just a small amplifier circuit from jaycar and possibly with a couple of filters on it.

Or you can buy something like a KnockBlock from Link.

[Guest loren]

oh well. I think I'll stick with 98 for a while. the cars going great with all these freezing cold southerlies anyway