[enrita]

Originally Posted by I3ossman

Im having the same stuttering under load on stage 1. What are the best performance plugs to put in these cars?

OEM ones.
NGK of the mini cooper S work as well apparently but would not use those on such low boost and power.

[COBB Tuning]

The v203 and v301 maps make the exact same power. We've been busy doing some other testing this week, but hopefully we'll have a dyno plot soon to illustrate this! Most likely the feel difference is related to the throttle mapping.

For those that prefer the feel of the v203 maps, are your cars auto or manual?

Ian

[mithiral67]

Hey Ian, can we get an status update on what you guys are working on and how its coming along?

[ssm3nyc]

Originally Posted by COBB Tuning

The v203 and v301 maps make the exact same power. We've been busy doing some other testing this week, but hopefully we'll have a dyno plot soon to illustrate this! Most likely the feel difference is related to the throttle mapping.

For those that prefer the feel of the v203 maps, are your cars auto or manual?

Ian

mine is auto and i prefer the v203 v1 map. ive switched over to v301 v1 map thinking its the same mapping but it just doesnt feel the same.

is 203v1 throttle mapping any different from v301 v1? ive also tried the 301 linear map but its too sluggish for auto so im probably going back to v203 unless you guys come up with new maps

[JStang]

Originally Posted by COBB Tuning

The v203 and v301 maps make the exact same power. We've been busy doing some other testing this week, but hopefully we'll have a dyno plot soon to illustrate this! Most likely the feel difference is related to the throttle mapping.

For those that prefer the feel of the v203 maps, are your cars auto or manual?

Ian

I am running the V203 standard throttle map and my car is an auto.

[Z3->WRX->335]

Originally Posted by JStang

I was just thinking this same thing the other day. I used to be able to make the traction control indicator light up in 2nd and sometimes in third gear from a roll with the V203 maps. Since I've switched to V301 maps I haven't broken the tires loose from a roll yet with the exception of into a turn.

I'm going to switch back to V203 today to compare. I will check back in.

maybe its the cold weather here or maybe my tires just suck but my traction control light was flashing like crazy last night with 3.01

[rader1]

Originally Posted by COBB Tuning

The v203 and v301 maps make the exact same power. We've been busy doing some other testing this week, but hopefully we'll have a dyno plot soon to illustrate this! Most likely the feel difference is related to the throttle mapping.

For those that prefer the feel of the v203 maps, are your cars auto or manual?

Ian

Manual. On v203: on a cool night if i am at 3000rpm in second gear and plant the throttle into the floor board the car spins the rear tires with ease. On v301: in the same scenerio the car just pulls with very little wheel spin. I know you're thinking "one instance doesnt prove anything," but this is consistant(ie everytime.) Im not talking about modulating the throttle, im saying the car is slower/and or makes less power in v301 when you just plant your food. Ive had several passengers(and the TC light) confirm this.

In no way, shape or form am i bashing Cobb or the tune, i love everything they've done so far and am eagerly awaiting future development, but i also want the "old" stock throttle map back. Rob or Ian, please test drive 203 and 301 stock throttle maps and then come back and try say there is no difference between the throttle maps.

[tomob63]

+1 on having Cobb compare v203 to v301 stock throttle. They are very different tunes. Do like v301 for predictability, smoothness, less jerkiness, lurching, however there is a huge difference in raw power off the line on an AT car against v203. I keep going back and forth and keep getting the same result.

[805beemer]

I thought v203 was an update of v201-202 for auto cars to shift smoother?

[nitehawk]

So, I would like to try out the dyno simulation tool using the AP. I don't see it listed in the Performance section (only 0-60 mph and 1/4 mi are there)...Am I looking in the wrong area?

I'm currently on the latest beta firmware.

[LAE92]

@ ROB: Will our BMW COBB AP ever have on the fly map switching like the nissan GTR?

[nwn54]

If you are running the stage II/stage II+ maps should you be running the BETA Firmware updates? Or are the maps working fine with the 301 Firmware?

[nitehawk]

Originally Posted by nwn54

If you are running the stage II/stage II+ maps should you be running the BETA Firmware updates? Or are the maps working fine with the 301 Firmware?

I believe you need the latest beta firmware if you have a 2007 335i...

[Dark9T]

Originally Posted by LAE92

@ ROB: Will our BMW COBB AP ever have on the fly map switching like the nissan GTR?

you have to wait till the ATR or ATP come out for that..

[Brey335i]

If you ever need a local test car for ATR or ATP let me know... just sayin'

[ajsalida]

Just installed a Cobb on a 2009 e92 xi AT. BMS DCI. Running 91 octane + 1/2 can octane boost. v301 sport stock. Really enjoying it. I was playing with data display and got a peak boost of 17.9 PSI, at low RPM's. Car was warmed up (oil temp over 200) but not hot. Was not logging but I will try to replicate this.

So my Q's:

1) Does the boost target PSI above ambient, or is the actual quantity targeted MAP, and then boost displayed derived from MAP-ambient? The point is at my altitude (7500 ft up to 12k ft) ambient is 25% or more lower than sea level. So just about 3 lbs....

Issue here is turbos must work much harder at altitude to create a target MAP....not so hard to target boost above ambient.

Perhaps related but I also took a run up to the top of a local pass, ambient @ 7500 ft was 60 deg F, at 11k it was 50 deg F. Got into the gas a little but not a lot (loads of cops and construction), anyway oil temps were approaching 250 at the top, has NEVER gotten past 240 before even with spirited driving at these altitudes, in summer temps. Also the car ticks up on oil temp much faster warming up even before getting into boost, just tooling around @ 50 deg F ambient.

2) So the Q here is has anything been done in the tune to thermostat logic for the oil cooler? I don't know if it can be. It may also be the DCI. Oh and I think an FMIC is next mod, obviously.

[zeenon53]

So with stage 2 out, are the stage 1 maps perfect? It may be time to get one...

[ModBargains.com]

Originally Posted by zeenon53

So with stage 2 out, are the stage 1 maps perfect? It may be time to get one...

I do believe that the Stage 1 maps are as near perfect as they possibly can be. You do have a few choices of different stage 1 maps to play with and you can choose the one that suites your driving habits best!

[EthanM386]

Does anyone know what is the peak boost i should see for running v301 sport map?

[enrita]

Originally Posted by sleepyyuan

Does anyone know what is the peak boost i should see for running v301 sport map?

its load based so depends a lot on the conditions while driving.

[EthanM386]

Originally Posted by enrita

its load based so depends a lot on the conditions while driving.

i see..thanks! i'm still very new to this, how different should the actual boost compared to the requested boost?

[BMWsky]

Like others, I'm stuck on the "updating" screen. I tried the Shift+F11 key, but I have a Mac. I tried Command+F11, no dice.


...anyone with a Mac know how to shut this thing off so I can continue?