http://www.bmwblog.com/2009/02/15/driving-a-twin-turbo-6-cylinder-get-the-software-update/ News And Rumors Covering The Auto Industry Sun, 22 Nov 2009 04:26:46 +0000 http://wordpress.org/?v=2.8.4 hourly 1 http://www.bmwblog.com/2009/02/15/driving-a-twin-turbo-6-cylinder-get-the-software-update/comment-page-1/#comment-98421 Horatiu B. Wed, 18 Feb 2009 05:33:38 +0000 http://www.bmwblog.com/?p=9572#comment-98421 @bmwtechal, Thanks Al, I think we should let you explain better in an article, the difference between these software upgrades. @bmwtechal, Thanks Al, I think we should let you explain better in an article, the difference between these software upgrades.

]]> http://www.bmwblog.com/2009/02/15/driving-a-twin-turbo-6-cylinder-get-the-software-update/comment-page-1/#comment-97691 bmwtechal Mon, 16 Feb 2009 04:04:54 +0000 http://www.bmwblog.com/?p=9572#comment-97691 yes it is amazing what the software program can do. basically the program is a trade off. we had 2 problems with the N54. one being the slight turbo lag felt by the most expierence drivers, and another was you avg. mom complaint of noise from the engine bay. actually a rattling noise in the turbocharger area. this noise was contributed to the wastgate valves hanging up. think of the wastegate valve like your avg cyl. head valve. not only does it recipricate up and down, but also from natural mechanical motions engineered into the valve train the valve also rotates around during the opening and closing phases. its not alot of rotation relativley speaking but this rotation of the face of the valve (any valve) is important in developing a good matched fit. over time the face of the valve and the seat the valve compresses against wear with each other. rotation helps even wear by not keeping only one space in contact with another space forever. there was a program initally to fix this complaint however one of the results was found out to be slightly increased turbo lag. the newsest software now is just a tune slightly between the 2. the goal in being trying to achieve the least amount of lag with the least amount of noise. but this isnt a perfect world. the can be anoticedable noise after this software program. this is totally normal and some people like it. turbo engines are naturally a little louder than N/A eninges anyway, and whats better than the sound of a loud engine? not just in the exhaust but when you hear all the rotating and recipricating mechanical sounds! yes it is amazing what the software program can do. basically the program is a trade off. we had 2 problems with the N54. one being the slight turbo lag felt by the most expierence drivers, and another was you avg. mom complaint of noise from the engine bay. actually a rattling noise in the turbocharger area. this noise was contributed to the wastgate valves hanging up. think of the wastegate valve like your avg cyl. head valve. not only does it recipricate up and down, but also from natural mechanical motions engineered into the valve train the valve also rotates around during the opening and closing phases. its not alot of rotation relativley speaking but this rotation of the face of the valve (any valve) is important in developing a good matched fit. over time the face of the valve and the seat the valve compresses against wear with each other. rotation helps even wear by not keeping only one space in contact with another space forever. there was a program initally to fix this complaint however one of the results was found out to be slightly increased turbo lag. the newsest software now is just a tune slightly between the 2. the goal in being trying to achieve the least amount of lag with the least amount of noise. but this isnt a perfect world. the can be anoticedable noise after this software program. this is totally normal and some people like it. turbo engines are naturally a little louder than N/A eninges anyway, and whats better than the sound of a loud engine? not just in the exhaust but when you hear all the rotating and recipricating mechanical sounds!

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