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BMW 3-Series (E90 E92) Forum
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All COBB Tuning AccessPORT Flash for N54 335i Discussion Here
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06-19-2012, 08:57 AM | #5501 |
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I don't think we have to argue about hot vs. cold air
But my question is if the corrections the DME performs due to "hot tempreatures" are showing up as Timing Corrections or as something else. In my case when I did the Logfiles it was a pretty hot day. And it hasn't changed ever since. Air Temp was about 30 to 35° C -> 86 to 95° F Charge Air Temp after some pulls were 65° C -> 150° F And I did pull 5th gear, not until Redline but about 6800RPM I think my IC is working good, but still 150° F Charge Temp is hot air. @BMWsky: In 3rd gear at 6650RPM I also had 40°C -> 104° F |
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06-19-2012, 09:06 AM | #5502 |
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What other mods do you have? I ask because my temp at the manifold are typically 15 degrees above ambient regardless of which gear I pull in. I've been at the track and logged during some pretty hot sessions and found that my internal temps stay right there regardless. My car probably hasn't seen temps as high as yours since I added the FMIC and CAI. Even if the temps start creeping up, as soon as I shift they'll drop dramatically.
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06-19-2012, 09:10 AM | #5503 | |
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Quote:
The focus on an FI car should be the least amount of restriction and direction change in the intake tract. If you want cooler charge temps, focus on improving the area that cools the charge (intercooler). Last edited by AWD Addict; 06-19-2012 at 09:20 AM.. |
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06-19-2012, 09:14 AM | #5504 | |
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CAI is a waste of money???? Are you confusing DCI with CAI??? My Stett CAI doesn't pull in heatsoaked engine air. Last edited by BMWsky; 06-19-2012 at 10:15 AM.. |
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06-19-2012, 09:14 AM | #5505 |
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@BMWsky:
Only IC. I haven't found the right Intake for me yet. Yeah the temps are while driving normal always about 15-20°C above Air temp. But If you pull 2nd until 6th gear the temps change dramatically. |
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06-19-2012, 09:41 AM | #5506 |
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06-19-2012, 09:48 AM | #5507 |
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There are corrections for timing based on a few different temperatures. I don't have anything in front of me since I am at work but as temperature increases timing will scale back but will not show as a timing correction it will just adjust timing based on the scalar / new value being implemented from the table and cell when the conditions dictate. These are all things you can change so that they don't happen if you always want to run the same values (simply put 0 change in the appropriate table by making the scalar 0) .but something I would definitely keep as its better to run the right values the first time over letting the engine see KR.
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06-19-2012, 09:54 AM | #5508 |
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@benzy89:
I think that stuff is to expensive. Some plastic for 800$ + in my case Customs and tax here in Germany. Makes ~ 1200$. Thats not worth it. + Police doesn't like those mods very much. U can get in real trouble for something like this. So I need a OEM look intake, that doesn't cost a furtune and is easy to change back to OEM. Seems like an easy task! |
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06-19-2012, 09:55 AM | #5509 | |
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06-19-2012, 10:49 AM | #5513 | |
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2) No. Your CAI becomes a longer, curvier, heatsoaked tunnel for your engine air to run through, negating much or all of the temperature difference from outside to inside the engine bay. It's harder for an engine to draw air through a longer tube than a shorter one, even if there are no additional bends. A T in the track is even worse. The best intake solution for FI is a short, wide, straight pipe. If you could put a cone filter on the turbo inlet, that'd be best. |
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06-19-2012, 10:50 AM | #5514 | |
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Edit: BMW Performance Intake is no longer FS & the Gruppe M is closer to $2.5k. BuraQ has reviewed the aFe Elite in depth, he saw gains after slightly modifying it himself (sealed gaps to make it more "air tight"). If you're picky with materials used & aren't a fan of the aFe's construction, then the Dinan CAI ($1.3k) is probably your best bet. Last edited by benzy89; 06-19-2012 at 11:15 AM.. |
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06-19-2012, 11:13 AM | #5515 | |
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Are you basing this on real world application or conjecture? I ask because my logs taken while on the track at Watkins Glen disagree with your conclusions. The air never sits long enough in the "longer tube" because the engine keeps sucking in the cold air from the lower part of the grill. Again, you seem pretty convinced by your posts; I'll go by what my real world experience has shown me and by the data that my logs provide. |
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06-19-2012, 11:21 AM | #5516 | |
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http://www.e90post.com/forums/showthread.php?t=449339 |
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06-19-2012, 11:59 AM | #5517 |
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not again the CAI-DCI-Stock box discussion .... There are tons of test, please search.
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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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06-19-2012, 01:12 PM | #5518 |
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Hey guys, I just got my Cobb and am throwing P30FF codes every time I give it a good amount of gas. I'm trying to find a leak and I checked the lines behind the oil cooler and they are fine. I'm going to check the DV's tonight. Was wondering if you guys have any other ideas/place to check? I got the first two searching "P30FF" but figured I'd try here since the code/warning "reduced engine power" didn't come until I got the Cobb and flashed it to Cobb Stage 1 Aggressive. Car is an 08' 335xi E92 6MT. Nothing else done to the vehicle; has 32K on it. Also, side note, I've been reading the 4.01 Beta is available and am I just dumb (probably), cause I can't find it on Cobb's site for downloading. Any help is appreciated!
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06-19-2012, 01:21 PM | #5519 | |
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In order to run the beta maps you have to select the red "beta maps" button below the different ROM revisions. http://www.cobbtuning.com/AccessPORT...ps-s/40100.htm |
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06-19-2012, 01:37 PM | #5521 |
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06-19-2012, 02:07 PM | #5522 |
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