[AlexC2er]

Originally Posted by Bee Pee

Agreed, 98 can vary but fortunately we also get 99 RON (

Does that make a big difference. I’m no chemist so I have no idea?

[hufington]

We may wanna keep these great increases a little more quiet as to not spook BMW and cause them give us cars with the real advertised horsepower and not underrated figures like right now.

[mattssi]

BM3 platform?

[M_Torx]

710 to the wheels ??? every dyno so different and is this even to the tire ?

[Bee Pee]

Originally Posted by aerobod

We have 94 AKI readily available here in Canada, that is equivalent to a bit above 99 RON.

Sorry to burst yr bubble but 94AKI in Canada has higher Ethanol %age ie 10+% to boost octane of a lower quality base fuel. Much already written about inconsistency of Canadian 94 compared to Shell 91 (and moreso 93) by 911 and GTR owners.

UK 99 RON with max 5% ethanol content (Tesco m99 and Shell V Power) are more dependable being higher grade fuels, period. So, in combination with OPF. delete, no wonder why s58 thrives and responds so well with a tune and even moreso when a splash of Ethanol is added to for a blend ca 104/105 RON with relatively low eXX numbers 😉

[G MONEY]

Originally Posted by M_Torx

710 to the wheels ??? every dyno so different and is this even to the tire ?

Need some 60-130 times and not lame ass dyno numbers.

[aerobod]

Originally Posted by Bee Pee

Sorry to burst yr bubble but 94AKI in Canada has higher Ethanol %age ie 10+% to boost octane of a lower quality base fuel. Much already written about inconsistency of Canadian 94 compared to Shell 91 (and moreso 93) by 911 and GTR owners.

UK 99 RON with max 5% ethanol content (Tesco m99 and Shell V Power) are more dependable being higher grade fuels, period. So, in combination with OPF. delete, no wonder why s58 thrives and responds so well with a tune and even moreso when a splash of Ethanol is added to for a blend ca 104/105 RON with relatively low eXX numbers ��

Petro Can 94AKI consistently tests to RON 101.5 and MON 88. The issue is that people don’t adjust their tunes in terms of the open loop full throttle fuel maps to take into account the increased fuel flow required for the ethanol content.

From my Caterham dyno sessions Petro Can 94 can take a degree or so more advance than Shell 93 (which now typically tests to 10% ethanol anyway), I do ensure my target Lambda is hit (0.86 at torque peak and tapering off somewhat either side) by adjusting fuel flow to the relevant ethanol content, though. This is on a 2.0 litre naturally aspirated engine making 260bhp at 8,000RPM (212bhp at the wheels), so detonation is an important factor. I have the current timing set to use 93AKI, so I can run Shell 93 or Petro Can 94, neither have given any issues with 2,000km of hard track use this summer, with the plugs pulled after every track day.

[akkando]

Originally Posted by M_Torx

710 to the wheels ??? every dyno so different and is this even to the tire ?

The video showed stock at 490 wheel on that Dyno so the delta was 220hp.

Perhaps intercooler won't keep up though at that boost level without upgrade?

[M_Torx]

fuck wouldn't want a tune like that...get some bad ⛽️ and boom lol like safe tunes would be happy 670-680 wheel and not risk it

[T-Rexx]

Originally Posted by spuntyb

why leave it if ur already throwing in DPs is the better question

Pulling out OPF’s in Australia is a big no no.
If the police see that it has been removed then you could get a $22000 AUD fine.
And having owned many significantly modifies cars in the past, I would just rather not have the hassles of being defected by the police or my car impounded, or diving nervously always looking in my mirrors.

Given that the M2 is a $135,000 car, I am trying to have the reliability and usability of a prestigious sports car, but tune/modify it just to get a bit more out of it without running the risk of significant penalties.

So I will be looking at high flow cats, and retain the OPF, some bolt ons and tune for E30/50. Giving me a fast car without the fear of big problems.

[dezzracer]

Originally Posted by Penguino

That’s a lot of power. Reliably? Not sure.

And can you stick it? Probably not. So what’s the point?

[spuntyb]

Originally Posted by T-Rexx

Pulling out OPF’s in Australia is a big no no.
If the police see that it has been removed then you could get a $22000 AUD fine.
And having owned many significantly modifies cars in the past, I would just rather not have the hassles of being defected by the police or my car impounded, or diving nervously always looking in my mirrors.

Given that the M2 is a $135,000 car, I am trying to have the reliability and usability of a prestigious sports car, but tune/modify it just to get a bit more out of it without running the risk of significant penalties.

So I will be looking at high flow cats, and retain the OPF, some bolt ons and tune for E30/50. Giving me a fast car without the fear of big problems.

awesome!

i was referring to the build by AUTOID in the video though, thanks

[///M TOWN]

Originally Posted by Kevin_The_Clean1

Fun stuff & great numbers. Simply wish he had more "readily available" high quality fuel at pumps here all across the US...

Just make room for a gigantic barrel of fuel ⛽️ in your garage…

[///M TOWN]

Originally Posted by aerobod

We have 94 AKI readily available here in Canada, that is equivalent to a bit above 99 RON.

Canadian eh ⁉️

[///M TOWN]

Originally Posted by NewToM

Our 91 in California is the envy of you all I can tell…

It’s just another great reason to move the fuck out of la-la land

It’s a great place to visit…

[NewToM]

Originally Posted by ///M TOWN

It’s just another reason to move the fuck out of there

It’s a great place to visit…

Ehh sorry but I’m staying.

[///M TOWN]

Originally Posted by NewToM

Ehh sorry but I’m staying.

I’m happy for you…

I was just in LA, and had a great time

They need to divide that state in threes

Get rid of that piece of shit governor

[Bee Pee]

Originally Posted by aerobod

Petro Can 94AKI consistently tests to RON 101.5 and MON 88. The issue is that people don’t adjust their tunes in terms of the open loop full throttle fuel maps to take into account the increased fuel flow required for the ethanol content.

From my Caterham dyno sessions Petro Can 94 can take a degree or so more advance than Shell 93 (which now typically tests to 10% ethanol anyway), I do ensure my target Lambda is hit (0.86 at torque peak and tapering off somewhat either side) by adjusting fuel flow to the relevant ethanol content, though. This is on a 2.0 litre naturally aspirated engine making 260bhp at 8,000RPM (212bhp at the wheels), so detonation is an important factor. I have the current timing set to use 93AKI, so I can run Shell 93 or Petro Can 94, neither have given any issues with 2,000km of hard track use this summer, with the plugs pulled after every track day.

Regular PC94 is equivalent to 98RON. Apparently Canadian Ultra 94 is better base fuel and with 10% ethanol no wonder it’s at 101RON !!!!

Like for like adding 5% more ethanol to UK SVP99 would bump it beyond 102 RON.

Anyways, UK ditching OPF blockage in oem exhaust and decent base fuel gets yr s58 to 700+ CHP

[///M TOWN]

Originally Posted by Bee Pee

Regular PC94 is equivalent to 98RON. Apparently Canadian Ultra 94 is better base fuel and with 10% ethanol no wonder it’s at 101RON !!!!

Like for like adding 5% more ethanol to UK SVP99 would bump it beyond 102 RON.

Anyways, UK ditching OPF blockage in oem exhaust and decent base fuel gets yr s58 to 700+ CHP

Yes, whenever I’m in Canada 🇨🇦 I always fill up ⛽️ before I return to the states

[aerobod]

Originally Posted by Bee Pee

Regular PC94 is equivalent to 98RON. Apparently Canadian Ultra 94 is better base fuel and with 10% ethanol no wonder it’s at 101RON !!!!

Like for like adding 5% more ethanol to UK SVP99 would bump it beyond 102 RON

Whatever the fuel spec is, it will be blended with ethanol to reach that spec. 94 AKI E10 does have an equivalent knock / timing capability as 99 or 100 RON E0 when the correct fuel flow is used. Assuming one isn’t messing around doing your own ethanol mix, Petro Can Ultra 94 (E10 always now, since 2022 government “clean fuel” mandate) straight from the pump is fine for track use for any Porsche GT3 or GT4 (we have several in our track club using it).

In the past OEM base fuel maps didn’t take E10 fuel into account and were slow with adaptive mapping to build long term trim maps, causing initial lean mixtures (for example 0.90 lambda instead of optimal 0.86 on an NA engine under full load), leading to timing being pulled when knock was detected. The speed of adaption for different ethanol content (without an ethanol sensor) is a lot better now.

The alternative is to use Alpha-N tuning and open loop for high load sites and add 6% fuel compared with use for E0. This will allow ethanol variation up to E15 without timing being pulled, with trims in closed loop adapting down to E0 if used, instead of adapting up to E10 for E0 base maps.

[MIMISOCKM2]

Not sure what the point of this thread is.

In the UK, as soon as you remove the GPF / OPFs the car isn’t road legal, so kinda useless to anyone unless it’s a dedicated track / race car and trailered to and from the track.

Those number plates need to come off.

[Mr. Jonathan]

Originally Posted by NewToM

Our 91 in California is the envy of you all I can tell…

Ha! Matt Armstrong got a taste of that envey when using CA 91 Oct. in his tuned RS6.