|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
AccessPORT Tuning Discussion - hosted by COBB Calibration Team
|
|
01-12-2011, 04:33 PM | #24 | ||
Major
233
Rep 1,051
Posts |
Quote:
Quote:
The data is presented in a similar fashion but the underlying logic is much different than a Subaru. Adding parts will increase pumping efficiency but should not increase the actual load values being targeted or reached; taking advantage of the extra breathing capacity will mean rescaling to stay out of no-man's land though Best regards, Lance |
||
Appreciate
0
|
01-12-2011, 04:37 PM | #25 | |
Major
233
Rep 1,051
Posts |
Quote:
Regards, Lance |
|
Appreciate
0
|
01-12-2011, 04:40 PM | #26 | |
Brigadier General
102
Rep 3,460
Posts |
Quote:
Safe to assume the 11-12 guys, despite lower timing, are actually running higher load with less knock. Reason I state this, some piggy back manufactures are bent out of shape about claiming to run stock timing (read, higher is better) as proof the car is running knock free and safe... |
|
Appreciate
0
|
01-12-2011, 04:55 PM | #27 |
Brigadier General
102
Rep 3,460
Posts |
|
Appreciate
0
|
01-12-2011, 05:03 PM | #28 |
Second Lieutenant
4
Rep 216
Posts
Drives: 2008 - 335i - Cobb stg 1
Join Date: May 2008
Location: Very Hot, Humid, Southeast
|
Great stuff. This is one of the most transparent and helpful posts on tuning internals I've seen here. IMO, the product and participation here set a new standard for n54... I'm finally ready for a tune.
|
Appreciate
0
|
01-12-2011, 05:05 PM | #29 | |
Second Lieutenant
56
Rep 219
Posts |
Quote:
I haven't kept up much with your company for the past year or so, but is Trey still involved with things, or has he stepped away/taken more of a managerial/ownership role? Sorry, I know it's pretty off topic, I was just curious haha.
__________________
2008 Honda S2000 (weekend/former autoX) - 1996 Acura Integra GS-R (occasional autoX) - 2008 BMW 128i 6MT (track/time attack) - 2008 Nissan Xterra (winter beater)
|
|
Appreciate
0
|
01-12-2011, 05:10 PM | #30 | |
Major General
177
Rep 6,631
Posts |
Quote:
__________________
E90 LCI N54 6AT
|
|
Appreciate
0
|
01-12-2011, 05:11 PM | #31 | |
Private
4
Rep 83
Posts |
Quote:
Trey is still very involved with tasks as well, plays a crucial part to the R&D and reverse engineering items he's well known for.
__________________
BMW AccessPORT FAQ - Your question may have already been asked by fellow members and answered by COBB Tuning. Check here for quickest answers!
Call us at 866.922.3059 - Website - AccessPORT - Forums - Mailing List - Blog - Facebook - Twitter - YouTube - |
|
Appreciate
0
|
01-12-2011, 05:12 PM | #32 | |
Brigadier General
102
Rep 3,460
Posts |
Quote:
Clean slate, yes. However the ecu dropped load for a reason, and will drop it again for that same reason, knock. so what you are doing, is basically making your knock again untill it levels off to whatever load it chooses? |
|
Appreciate
0
|
01-12-2011, 05:18 PM | #33 | |
Major General
177
Rep 6,631
Posts |
Quote:
It might even help, at least in theory based on the information provided, to reset the adaptations after autotune (on the Procede side) has stabilized.
__________________
E90 LCI N54 6AT
|
|
Appreciate
0
|
01-12-2011, 06:28 PM | #34 |
Lieutenant Colonel
151
Rep 1,677
Posts |
I got a question. As far as the "stock" map is concerned, does it follow the same timing table as OEM map? Or does it have any efficiencies or enhancements from stage 1 OTS?
|
Appreciate
0
|
01-12-2011, 06:37 PM | #35 | |
Major
233
Rep 1,051
Posts |
Quote:
Regards, Lance |
|
Appreciate
0
|
01-12-2011, 09:27 PM | #36 |
Major
233
Rep 1,051
Posts |
So, what other topics would you like to hear about? I know that Tim is preparing a post about our software's logging capabilities and show some of the information we have to work with from the tuning side of things, so keep an eye out for that. Tuning cars is definitely 1 part art and 1 part science, so please don't hesitate to ask if you'd like to know more about a certain aspect of what goes in to the tuning process around here
|
Appreciate
0
|
01-12-2011, 09:31 PM | #38 | |
Major General
177
Rep 6,631
Posts |
Quote:
I want to see the ECU load limit defeated and how that would benefit those of us looking to convert from piggybacks.
__________________
E90 LCI N54 6AT
|
|
Appreciate
0
|
01-12-2011, 09:54 PM | #39 | |
Major
233
Rep 1,051
Posts |
Quote:
Best regards, Lance |
|
Appreciate
0
|
01-12-2011, 09:56 PM | #40 |
My X5d tows my spec miata to the track.
74
Rep 1,254
Posts |
I'd like some insight on the afr targets chosen. BMW saw fit to run near stoich under boost for the midrange. You dramatically richening in that area while also pulling timing makes me wonder if the rich afr is actually necessary. Would appreciate the facts about how the fueling targets were selected. Thanks.
|
Appreciate
0
|
01-12-2011, 10:01 PM | #41 | ||
Major
233
Rep 1,051
Posts |
Quote:
Quote:
Regards, Lance |
||
Appreciate
0
|
01-12-2011, 10:09 PM | #42 | |
Major
233
Rep 1,051
Posts |
Quote:
Yes, I did find that richening AFRs was beneficial to reducing/eliminating detonation. It did not have a significant affect on power output though AFR's in the 11's and below did seem to begin measurably reducing power. The OTS maps are richer than was necessary to quiet the knock control system as a measure of safety. AFR will always be up for debate and I am completely upfront -- there is more than one way to get the job done and I happily allow for the fact that someone else may prefer a different AFR curve. Thanks to our forthcoming AccessTUNER software, tuners will be able to achieve just that Thanks again for the good question! Regards, Lance |
|
Appreciate
0
|
01-12-2011, 10:28 PM | #43 | |
Lieutenant
41
Rep 468
Posts |
Quote:
Cheers, Rob |
|
Appreciate
0
|
01-12-2011, 10:32 PM | #44 |
Major General
177
Rep 6,631
Posts |
Not concerned with a specific load limit, just the theory that the piggybacks are limited by the stock load target. Some more clarification would be appreciated!
__________________
E90 LCI N54 6AT
|
Appreciate
0
|
Bookmarks |
|
|