Last post on Nov 14, 2010 at 5:56 AM
You are in the BMW 3-Series
What is this discussion about?
BMW 3 Series, Sedan
#3762 of 7013 Re: software upgrade [dhanley]
Jul 28, 2005 (7:07 pm)
Do you know what's worse than being called a liar? Being called a liar and then not being able to find the resource that was used as the foundation of the statement in dispute. It seems that since I researched the multi-stage intake manifold issue a couple of months ago, BMW has gone and revamped their web site. Instead of containing content about the M52 and M54 series if I6 engines, it is now focused on the N52 of the E90 and E60. Anyway, I did a little web work and came up with the following links to support my previous statement regarding the two stage intake setup for the old 2.8 liter mill.
"The inlet system was provided with two technical refinements in 1998. One was a flap valve in the inlet plenum chamber that cut off the inlet passages of the front three cylinders from the rear three. The differentiated intake system, known as DISA, optimized the engine's running under full load. The other refinement was a dedicated system of tubes of very small diameters through which the inlet air was drawn during idling or when running at low loads. The increased turbulence that this achieved improved the combustion process and thus reduced exhaust emissions."
Said another way, a two stage manifold.
http://www.machinedesign.com/ASP/strArticleID/56809/strSite/MDSite/viewSelectedArticle.asp- is a link that discusses the 2004 530i, which has an engine which is a direct descendant of the 2.8 liter mill in question states:
"The rear-wheel-drive 530i carries a 3.0-liter in-line six-cylinder engine, boasting a healthy 225 hp and 214 lb-ft of torque. The aluminum powerplant features dual overhead cams, four valves per cylinder, variable-valve timing, and a two-stage intake manifold. A flap mechanism switches between two paths for air entering the engine. One path is tuned for low to medium speeds for improved torque and response, the other for high speeds to maximize top-end power."
http://www.basf.com/businesses/polymers/plastics/pdfs/fischer.pdf contains an undated discussion of the M52 engine that states:
"The resonance flap is located in plenum three. When this flap is closed, it divides plenum three into two halves, thus providing a long runner length for high torque. When the flap is in the open position, only the short runner length from plenum three to the cylinder is provided for high power."
Still don't believe me? Still think you can inexpensively breathe on a 325i so that it will generate 330i like power? All I can say is, "It's you money, do with it what makes you happy."
#3763 of 7013 Re: illuminated rocker panels [div2]
Jul 28, 2005 (7:20 pm)
they are nice aren't they, my dealer said they a rent available for the 3 yet...oh well, we'll see what happens.
on another note- how does the runflat monitoring system work in the e90 330i. are there sensors in the wheels? i was wondering because i might put on aftermarket rims on my 330i and curious to see what wheels i would need to get.
#3764 of 7013 Re: 06' 3 series ipod [wstevec]
Jul 28, 2005 (7:39 pm)
Well I have the $5.00 cable from radio shack and I think it would be a better bet. The reason is any equipment I have used be it a cell phone or cd changer where I used fm transmitter modulation always seemed to have distortion over the speakers at least a little. The cable at least gives any Ipod a direct link to your stereo like a factory installed cd changer. You just go to the audio button and select the aux selection and with the ipods headphone jack connected to the cable and the other side of the cable plugged into the aux jack in the armrest you should be good to go. At least you can controll the volume. What item for a bmw ever costed only five bucks anyway?
#3765 of 7013 Re: 06' 3 series ipod [03celica03]
Jul 28, 2005 (7:54 pm)
Think people fiddling with their iPods while driving may be more prone to accidents?
Got to be as bad as trying to dial a phone.
#3766 of 7013 Re: illuminated rocker panels [michaeln1]
Jul 28, 2005 (8:06 pm)
I mat be wrong but I have heard that they are connected to the DSC ststem. Therefore, you can get whatever wheels you want and just put them on with no problems.
#3767 of 7013 Re: 06' 3 series ipod [wco81]
Jul 28, 2005 (8:10 pm)
I strongly recommend getting an RF remote for the IPod. There are a couple of these available. I picked mine up for about $40 at the Apple store. I put the ipod on random shuffle and use the remote to skip songs I'm not interested in. Saves me from having to constantly open the arm rest. Just be sure you get an RF remote, not IR remote. The RF remotes don't need line-of-sight and will work with the armrest closed.
Also, someone mentioned having to have the iPod's volume all the way up. Biggest problem it created for me was that switching from AUX to Radio sometimes meant a huge leap in volume. But, their is an aux input volume adjustment setting buried in the stereo that resolves this issue.
#3768 of 7013 Re: random thread awhile back [dhanley]
Jul 28, 2005 (8:47 pm)
I bought two e46's when i was in my twenties..now that i'm in my thirties, i added an LR3 (for my bigger, older, more sensible car)
#3769 of 7013 Re: illuminated rocker panels [michaeln1]
Jul 29, 2005 (4:39 pm)
I was told by dealer that runflat monitoring is by checking wheel rpm with respect to other wheels. I wonder what happens if all four go flat at same time ?
No need for run flat winter tires if you mount them on separate, dedicated wheels - could use one of regular wheels as spare in the trunk.
My 325 will reach dealer this weekend - can't wait to take delivery.
#3770 of 7013 Re: 06' 3 series ipod [jimroos]
Jul 29, 2005 (11:37 pm)
Sorry jimroos , i am the one who said to have the volume on the ipod all the way up so you can use the radio or steering wheels aux imput volume to control the real volume of the ipod. I always do this because if you turn the volume up on the wheel or the radio and you are driving you can not safely go back to the ipod to make its volume higher. Just thought it was safer but if you do forget that huge leap in volume might make you make a huge leap in your seat and or into the next lane, my bad. Anyway onto another subject: could the 325 have only 215hp/185torq and the 330 really have 255hp/220 torq out of the same 3.0 liter engine.I drove both and believe that they are a little closer in numbers. Maybe bmw did not want to under sell the 330 by the numbers seeming too close.The torque I am inclined to believe is about 15-20lbs of torque in difference based on my driving of the cars.they have different mechanical workings which I understand can improve hp but in my opinion I think the torque is closer.After all 0-60 times 6.1 and 6.7 dont seem like those hp/torq numbers are true. Maybe im crazy but the old 325 and 330 were way different in power but not the new ones , at least for my family has owned a 94'325,95'325,96'M-3,98'328,00'328,03'330,06' for now.