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Cobb AP not what I expected.....Comments?
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03-19-2011, 09:51 AM | #1 |
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Cobb AP not what I expected.....Comments?
I received my AP 2 days ago, and was pleased with the build quality of the product. Installation went smooth took about 20 minutes to instal map 1 91 octane. (exactly as advertised). Started up the car, got an error code (unrecognized software) used the AP to clear the code, no problems. Car is actually idling smoother than before. Pull out of the parking garage, feels about the same as stock. I drive around for a bit to let the oil temp come up and head on to the highway to see what my butt dyno thinks. First impression is great! definately pulls hard, very smooth no hiccups. 150 kph comes in a hurry. After a few WOT runs in 3rd 4th and 5th I'm impressed with the extra power. The tires actually spun in 3rd!
So here's my issue............. after I settle down a bit and start to really get a feel for the drivability I'm noticing that even at 1/3 throttle the car is pulling like a freight train. I plugged the AP into the port to get some live read outs and see that even at 1/3 throttle the boost is shooting up to 14.4. and when I back off the throttle a bit the boost drops with a noticeable lurch. Increased throttle response is nice, but this seems excessive. The extra power is great, but if I can't modulate that power, whats the point? I track my car quite a bit (which was my main reason for the tune) but I'm concerned about the overall driveability. I don't want to be in a high speed corner and spin out when the boost kicks in because my toe twitched. I've read that some people feel the tune gets better as it adapts to your driving, is this true? Has anyone else had similar issues? or am I just crazy? Do other tunes have a similar throttle response? Are my expectations too high? I sent Cobb tech an email with no response so far. |
03-19-2011, 09:58 AM | #2 | |
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I would assume you would get used to it but i'm not sure b/c I am waiting for my Cobb AP later. |
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03-19-2011, 09:58 AM | #3 |
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I'm hoping they will eventually offer tunes with different throttle mapping. I had an AP for my JCW MINI and there were a bunch of different throttle maps available including a linear map that made modulation great. I'd love to get an option like that for the 335.
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03-19-2011, 10:14 AM | #4 | |
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Since you are local to me we can always put a JB4 in your car and you can compare the different feel and then decide what you like better. There is nothing better then hands on comparison, especially in terms of driving feel as its very subjective. Mike |
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03-19-2011, 10:17 AM | #5 | |
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03-19-2011, 10:54 AM | #6 |
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If its any consolation with ATR coming out you will be able to adjust that. You will be able to re-write the boost tables for your liking.
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03-19-2011, 10:55 AM | #7 |
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i dont have that kind of response with mine. i drove mine normally for a good 40 miles before opening up WOT after i flashed stage 1 map. I pulled 2-3 times, then returned to normal driving for another 50 miles or so.
I'm a conservative driver overall, but every once in a while i let it rip. When i drive normally, I don't fell any extreme sensitivities with the throttle. Could be due to the way the ECU has adapted to my driving. Maybe you can reset the ECU and let it re-adapt to a more conservative driving style. |
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03-19-2011, 10:58 AM | #8 | |
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03-19-2011, 11:08 AM | #10 |
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03-19-2011, 11:17 AM | #11 | |
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2.01 was advertised as fixing something with automatics on map 93 I believe. I have a 6MT and they changed the throttle reponse from 2.0 to 2.01. The difference is huge. I like it personally. |
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03-19-2011, 11:19 AM | #12 | |
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03-19-2011, 11:31 AM | #13 |
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Edit: I changed my mind, I want more linear power through the whole pedal
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2015 - Cayman GTS - Stock
2011 - 335is e92 - Cobb PTF E40/Rob - Beck/AR/Helix (458 rwtq and 479 rwhp) - Retired 2007 - 911 Turbo - EP1/AMS (617 awtq and 500 awhp) - Retired 2008 - 335i e92 - Cobb/AR/Helix/OSS (384 rwtq and 356 rwhp) - Retired Last edited by mithiral67; 03-19-2011 at 12:29 PM.. |
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03-19-2011, 11:34 AM | #14 |
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ive had my ap for little over a month now and there has never been any issues with my throttle, power was always smooth all the way to redline. heel and toe perfectly around corners. maybe try resetting the ecu to see if it that helps.
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08 335i | Space Gray | Burl Walnut Wood Trim | Sport pkg | Premium Pkg | LOGIC7 | Navi | Comfort Access
| COBB | Injen DCI | Active Autowerke | Sonic Tuning | E92 Lighting | ER | HKS | BMS | Ground Control | Vortex Tuning | |
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03-19-2011, 11:45 AM | #15 | |
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Maybe the solution is to provide different throttle response maps to allow for different driving styles (as another member has suggested). |
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03-19-2011, 11:49 AM | #16 |
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Sounds like some tuning related complaints piggys use to have years ago. Now of course cured and even can be set by the end user of where full boost comes on in relation to the pedal position. IMHO Linear>burst. Maybe something COBB can work on, shoot them an email.
I dont also think many users here are comprehending exactly what you are talking about. |
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03-19-2011, 11:56 AM | #17 |
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Edit: I changed my mind, I want more linear power through the whole pedal
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2015 - Cayman GTS - Stock
2011 - 335is e92 - Cobb PTF E40/Rob - Beck/AR/Helix (458 rwtq and 479 rwhp) - Retired 2007 - 911 Turbo - EP1/AMS (617 awtq and 500 awhp) - Retired 2008 - 335i e92 - Cobb/AR/Helix/OSS (384 rwtq and 356 rwhp) - Retired Last edited by mithiral67; 03-19-2011 at 12:29 PM.. |
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03-19-2011, 12:03 PM | #18 | |
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Increased throttle response does not = decreased pedal movement |
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03-19-2011, 12:05 PM | #19 |
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my Cobb only did that when i got PROTuned by a tuner here in Houston.
i drove it down the street and was about 4 miles from the shop when i physically turned around to go back. i pulled up and said "dude, this is INCREDIBLY too sensitive". and he said "so you don't like the boost coming on too fast" i said "hell NO !!!! not when i go 1/4 throttle from a stop light or stop sign and my car feels as if it's trying to shoot for the best sixty foot in the world" he dialed it down and it felt MUCH better. i like going half throttle and only getting 3 or 4 psi from that. I like to delegate how fast i go by how hard i go into the throttle, not by how sensitive the tune is. |
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03-19-2011, 12:12 PM | #20 | |
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03-19-2011, 12:19 PM | #22 | |
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Give it some time; you should get used to it. In my opinion, I'm very happy with the aggressive throttle response and immediate rush of torque. It's just enough to keep me satisfied on the street without getting into too much trouble and a feel I was used to coming from several high-performance V8 cars prior to my 335i. |
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cobb, cobb 335i, cobb n54, cobb tuning bmw, cobb tuning n54 |
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