[smack]

So stage one 91 octane on ACN91 is fine at this moment? Would the 100 octane map be availible now or have to wait for the stage 2 release?

[mithiral67]

Originally Posted by smack

So stage one 91 octane on ACN91 is fine at this moment? Would the 100 octane map be availible now or have to wait for the stage 2 release?

they have discussed releasing higher octane maps, but not time frame. I would guess a combo meth/race gas map would be an option for them

[MikesBMW]

Originally Posted by Shellacked135i

Who buys a tune for performance and worries about gas mileage

I put about 25k miles on my car a year so the 5mpg difference I'm seeing between the same map just one for 91 and the other for 93 actually really adds up. I put 93 gas in it, and yes the 93 mapping is fast as hell but the 91 mapping is probably 95% as strong, good enough for me and my daily commute.

[Proper Motion LLC]

Originally Posted by smack

My 335i is my toy car and I dont put many miles on it anymore so the price of fuel isnt of much concern for my toy. I wonder how much more gain would be possible running 100 octane on the 93 map as apposed to just 93 octane on its map?
We have shell V power but its only 91 octane.

Just run 2 gallons of 91 octane for every one gallon of 100 u run to get a 94 octane blend for the 93 octane map. That's what I do when I want to run the 93 octane map and the difference is very noticeable.

[acdHQK713K]

Originally Posted by Rysandro

Just run 2 gallons of 91 octane for every one gallon of 100 u run to get a 94 octane blend for the 93 octane map. That's what I do when I want to run the 93 octane map and the difference is very noticeable.

A 1 to 3 ratio is fine as well. 1:2 is good an safe though.

[kpblade]

Also posted this on the Cobb Forum, but wanted to see if anyone else has had this inconvenience. I have a 2008 e93 convertible with Auto and was able to install the Copp AP tune 202 v1. I also have the Mods4cars Smart Top convertible top control module. Ever since the re-flash, the Smart Top is no longer functional, none of the functions work at all. Is is turned on according to the Smart Top codes, it's almost like the ECU no longer recognizes the commands. Anyone else have this problem and any ideas other than losing one or the other.

[JB335]

Originally Posted by Stangorang

A 1 to 3 ratio is fine as well. 1:2 is good an safe though.

Even 4:1 will give you 93.25 octane. I used to run this in my old e92 with good results.

[acdHQK713K]

Originally Posted by JB335

Even 4:1 will give you 93.25 octane. I used to run this in my old e92 with good results.

I think 4:1 is the exact ratio.

[Glowin]

Originally Posted by kpblade

Also posted this on the Cobb Forum, but wanted to see if anyone else has had this inconvenience. I have a 2008 e93 convertible with Auto and was able to install the Copp AP tune 202 v1. I also have the Mods4cars Smart Top convertible top control module. Ever since the re-flash, the Smart Top is no longer functional, none of the functions work at all. Is is turned on according to the Smart Top codes, it's almost like the ECU no longer recognizes the commands. Anyone else have this problem and any ideas other than losing one or the other.

Mega bummer. I've got an E93 too with a SmartTop... PLEASE post an update.

Have you contacted SmartTop also to get their thoughts? The guy (Stefan) is awesome and really helpful. If you need his email, PM me.

It would be really odd that a flash would make their product inoperable. Dinan has been out for years, and you'd think they'd run into the same issue if that was the case...

[smack]

Originally Posted by Jeff@topgearsolutions

Running 100 octane on stage 1 maps wont do much but limit any chance of knock.

You would need a custom tune to increase ignition and boost to reap all the benefits of race gas.

Originally Posted by mithiral67

they have discussed releasing higher octane maps, but not time frame. I would guess a combo meth/race gas map would be an option for them

Originally Posted by Rysandro

Just run 2 gallons of 91 octane for every one gallon of 100 u run to get a 94 octane blend for the 93 octane map. That's what I do when I want to run the 93 octane map and the difference is very noticeable.

Originally Posted by Stangorang

A 1 to 3 ratio is fine as well. 1:2 is good an safe though.

Originally Posted by JB335

Even 4:1 will give you 93.25 octane. I used to run this in my old e92 with good results.

Originally Posted by Stangorang

I think 4:1 is the exact ratio.

Thanks fellas. What about an octane booster at every fill up on 91 octane? Would it be worth it or am I just wasting my time/money?

[acdHQK713K]

Originally Posted by smack

Thanks fellas. What about an octane booster at every fill up on 91 octane? Would it be worth it or am I just wasting my time/money?

If it was my car I would be using 100 octane mixed with 91. Not octane boosters.

[vasillalov]

Originally Posted by mke135i

I tried the v2 maps and boy, the car felt like an old dog... Not sure why anyone would want such slow throttle response. Back on standard maps.

Because when you go to an autox event, you want to have as linear throttle response as possible. With the standard maps you'll end up getting 100% power output at just 20% pedal travel. The results of that is that it will be extremely difficult to modulate the throttle around a long bend or simply exit one without spinning out of control.

[mke135i]

Originally Posted by vasillalov

Because when you go to an autox event, you want to have as linear throttle response as possible. With the standard maps you'll end up getting 100% power output at just 20% pedal travel. The results of that is that it will be extremely difficult to modulate the throttle around a long bend or simply exit one without spinning out of control.

Thanks, that makes sense.

[mke135i]

So I was bored and went and did a few more logs. First is with standard v202 and second is with v2 alt.throttle maps.

Looks like a tiny throttle closure at ~4200 rpm but no timing drop.


There's a timing drop here at 4313 rpm but no throttle closure

[Jeff@TopGearSolutions]

Originally Posted by mke135i

So I was bored and went and did a few more logs. First is with standard v202 and second is with v2 alt.throttle maps.

Looks like a tiny throttle closure at ~4200 rpm but no timing drop.


There's a timing drop here at 4313 rpm but no throttle closure

Throttle closure has to do with overboosting. Timing drops have to do with knock.

Your logs look solid nonetheless. Dont fret.

[Bleep]

It seems like the timing for the V2 map increases in more frequent, smaller increments, which is what I guess you would expect considering the power is more linear?

Or is this just a coincidence? Shouldn't the linear throttle response be directly related to the throttle position so it should be the same between both maps since he's flooring it, right?

[mithiral67]

Cobb was mentioned on autoblogs 6/14 podcast. I got a little excited, wasn't about the n54 though

[VelvetElf]

can't wait for my cobb!

[dyezak]

Saw a post yesterday by Cobb for the first time with THEM mentioning Stage 2! They just said they are working on it though.

[mithiral67]

the also threw out the word soon if I remember correctly. It made me happy.

[Shellacked135i]

I'll be getting a girl in the bed, soon.

[Magic-Man]

Installed my Cobb AP tonight. Wow, what a difference over the JB+. Can't wait to get to the track. It said my 0 to 60 was 4.4 w/a garbage 2.0 60'. Only other mod is BMS DCI.

I tried all four 93 octane maps. I did not like the throttle response on 202 v1 or 202 v2 under normal driving (My car is auto trans). I'm going to run map 201 for a few days & then try 202 standard again & make a final decision. Map 201 throttle response is a ton better than stock IMO.

Time to follow the DIY on logging data.