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All COBB Tuning AccessPORT Flash for N54 335i Discussion Here
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01-30-2012, 11:14 PM | #3521 | |
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01-31-2012, 03:38 AM | #3522 |
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Could be the gas brand!!!
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01-31-2012, 06:12 AM | #3523 |
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How much of a difference should one feel from stock vs. stage 1? I drove a COBB stage 1 car (BOV, intake, exhaust) and I didn't notice much of a difference. There did seem to be significantly more turbo lag, though. Is it the smoothness that gives it the illusion of there being no change, when, in fact, there's a huge change? I should have done a head to head to really see.
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01-31-2012, 06:45 AM | #3524 | |
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07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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01-31-2012, 07:24 AM | #3525 | |
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01-31-2012, 07:26 AM | #3526 |
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PTF Tuned | RB's | AMS FMIC | AR DP's | HPF Exhaust | CP-E DCI | Apex Arc 8's | 235/275 Star Specs | |
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01-31-2012, 08:17 AM | #3527 |
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I have been bouncing back and fourth between Cobb and PROcede, but i think I'm going to take the plunge and get the Cobb today! Stg 2+FMIC, here I come! :-)
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'07 Space Gray 335i coupe - R.I.P.
COBB ProTuned | AMS | CP-e | BMS | Quaife |
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01-31-2012, 08:38 AM | #3528 |
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01-31-2012, 11:40 AM | #3529 |
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I installed the AP within a week of getting my car - in my mind, it's the most ideal way to tune these cars. I've done the Stage 1, to Stage 2 (linear) to Stage 2+ (stock throttle) and have been really happy overall with each Stage.
My only complaint so far has to do with the flat spot in both the Stage 2 and 2+ tunes in the 3-4k RPM range. The car rockets off since turbo lag is almost non-existent, then the rate of acceleration flattens around 3-4k RPM, then power kicks in again (VTEC, yo!) and the car accelerates aggressively to redline. I've read a post or two about it being VANOS tuning, but either way, it's not the smoothest pulling car at the moment. I hope the v.302 maps solve the problem. Anyone else experiencing this? Did a quick search before posting this response and came up with this thread - http://www.cobbforums.com/forums/sho...om-3-4000-rpms. Sounds like a fix is in the works. |
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01-31-2012, 12:13 PM | #3530 |
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Yup, same thing here. Pulls hard as hell-> then not so much-> then hard as hell
In my data logs the timing flat lines at ~6*(doesn't pull, just levels off) for a bout 1Krpms and then starts increasing up to about 11* or 12*. It seems like a fairly aggresive tune, but the logs look like the car is VERY happy with it and it feels great except for the "lull" in the midrange. |
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01-31-2012, 01:11 PM | #3531 |
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I've experienced similar things, although with my car you can hear the boost fluctuate in the bov and the rev of the exhaust. 3-4k rpm seems to have some boost control issue. I'm hoping new maps fix this.
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01-31-2012, 02:01 PM | #3533 |
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anyone else getting random exhaust note changes?
I have had this issue since day 1, Cobb says it is just the wastegate opening/closing and that it is more noticable due to having an aftermarket exhaust. |
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01-31-2012, 03:41 PM | #3534 | |
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Bump for updates, Cobb has a few hours left in January to drop the new maps on us....
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01-31-2012, 03:45 PM | #3535 |
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01-31-2012, 04:00 PM | #3536 | |
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Last edited by crypticc; 01-31-2012 at 04:44 PM.. |
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01-31-2012, 04:07 PM | #3537 |
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Yes, on another forum Rob mentioned that January would be a very exciting month for cobb tuned n54 owners. This inferred the discussed new maps for stage 1+, revised stage 2/2+, and I was hoping for new on ATR.
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01-31-2012, 05:25 PM | #3538 | |
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Just wanted to give an update...I waited for the car to warm fully and on the way home from work tonight the boost was back to 14psi with a idle vac of 21 compared to 11 psi with an idle vac of 29....so it is definitely fluctuating regardless of engine temp...
Also, I do have one mod...injen intake. If I were to log the car what would be my next step? Thanks for the help. Quote:
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01-31-2012, 05:38 PM | #3539 |
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True. The final post does mention that Rob is working on it. That's obviously not from Rob himself, so who knows.
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01-31-2012, 08:16 PM | #3541 | |
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