is any particular tuner more accustomed to dealing with airbox equipped cars running a map vs alpha-n? most of the racers run alpha N since they're not concerned about low rpm driveability right?
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Last edited by tnord; 04-21-2023, 07:13 AM. -
Not really, the two or three mentioned above have a good amount of experience tuning the airbox setup with various cam and exhaust configurations. There is no MAF option and in case you meant MAP, it is not critical as the CSL is basically running Alpha-N. The only necessary upgrade is having the MSS54HP ECU or converting a MSS54 to HP. There should be no issues with low end drivability.Originally posted by tnord View PostComment
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yeah I meant map.....
years ago when I was doing the research on converting to the carbon airbox, the default easy option was to go alpha-n. that worked just fine in more aggressive driving, but the more seamless implementation was do the map conversion.
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I would say MAP is pretty critical if you plan to drive the car at different altitudes, otherwise it's probably going to drive like shit as it tries to adjust.Originally posted by Slideways View PostInstagram: @logicalconclusionComment
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Whatever happened to Frank Smith? He was a super hot tuner a couple of years back. Just curious to know what happened. I've been on the boards long enough that every couple of years that there is always a new tuner. I do remember Hassan being an active member on the old m3f boards.Last edited by simon_c; 04-21-2023, 09:53 AM.Comment
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Got found out as a hack.DD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
/// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
More info: https://nam3forum.com/forums/forum/m...os-supersprintComment
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The atmospheric pressure sensor is in the ECU itself. CSL tech doc states: "In order to ensure that the engine can run in emergency mode without an air mass flow meter function if a fault such as failure of the throttle-valve potentiometer occurs, the M3 CSL has an additional pressure sensor on the idle-air rail so that the pressure on the engine-side of the throttle valves can be analyzed."Originally posted by EthanolTurbo View Post
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It says it's emergency mode in case of a fault, which means it's probably not used in normal driving is my guess and also the reason a dedicated MAP setup drives much better as elevation changes.Originally posted by Slideways View PostInstagram: @logicalconclusionComment
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The MAP sensor is not measuring elevation change under normal driving. That sensor is in the ECU and is working even on a MAF setup.Originally posted by EthanolTurbo View PostComment
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from my casual tracking of the issue, a handful of motors started popping (from running too lean?). I definitely remember him being the bees knees for a year or two. I think one unfortunate soul even built a brand new badass motor, put a frank smith tune on it and it blew pretty quickly.Comment
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PopOriginally posted by simon_c View PostDD: /// 2011.5 Jerez/bamboo E90 M3 · DCT · Slicktop · Instagram
/// 2004 Silvergrey M3 · Coupe · 6spd · Slicktop · zero options
More info: https://nam3forum.com/forums/forum/m...os-supersprintComment
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Interesting. I guess my question is what does the MAP sensor do in terms of function and effect on drivability?Originally posted by Slideways View PostInstagram: @logicalconclusionComment
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Not much, but it is nice to have on a street car in case of TPS failure as the limp mode is better with it than without it.Originally posted by EthanolTurbo View Post
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I kinda figured it would something like engine go boom boom.Originally posted by Tbonem3 View PostComment
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