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Welcome to United Bimmer Community - BMW Forum . You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact contact us. |
| E12, E28, E34, E39, E60 General discussion and technical help for all year 5 series cars. |
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02-10-2008, 07:05 AM
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#1 |
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540i BPU Questions...
I should have titled this thread "after the Search" LOL. I'm a new member and got my '97 540I about a year ago. I'd like to do some BPUs to the car with some specific goals in mind. These are: -reasonable expense -nothing that would hurt the car or be overly difficult to return to stock -not be throwing codes or affect the DD-ability of the car -nothing "ricey" ( and I have a ricemobile in the garage) -things to improve fun and driveability as well as tasteful cosmetic mods. I know a lot of the above goals are very subjective  .I've looked for a power primer/upgrade path write-up all over the web and haven't come up with anything..but common things have floated out. ..so this is what I (think) I want to do: IMPROVE AIRFLOW Air intake Q's are should one go for a CAI or do the so called "airbox horn delete" ?? I'm really looking for an improvement in sound as well; some say the stock set-up is not overly restrictive. Exhaust Q's are can you remove the silencer and put on a magnaflow or some other aftermarket muffler without affecting torque or damaging the engine(ie going too lean etc) again looking for a better sound without sounding cheap or like a tractor... Engine management Is there a way to retune the ECU to accept these changes or is the effect negligable? COSMETIC -ordered lights form Habbie: clear led tails, clear sidemarkers,6K HID foglight kit, Depo p39s with 6k lows and 6.5k angel eyes Don't want to lower the car since it's a DD (winter) and need the clearance. DRIVEABILITY -interested in the "clutch dampening valve delete mod "a lot of 5 owners seem to do..will this mod get rid of the small delay or clunk that happens when I let off on the clutch? Lots of questions; I debated having separate threads.  Scott |
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02-10-2008, 08:24 AM
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#2 |
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Rims? |
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02-10-2008, 12:46 PM
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#3 |
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Hmmmm..can you put 18's on the 540 without having it look jacked up and/or lousing up the geometry?? Scott |
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02-10-2008, 02:17 PM
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yeah, 18 fit good.... |
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02-10-2008, 04:02 PM
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...right on; keep the schoolin' flowin' Scott
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