Are There Possibilities To Boost E39 540i Motor? - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 04-10-2005, 11:54 AM
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Hello!

I'm planning to buy e39 540i and I'd like to know if there are possibilities to boost the motor. The motor itself is quite low-tuned (i don't know if that is said right) so i wonder
if one could get all the horses out.

If somebody has good tips, I'll receive them with pleasure!!

And I'd also like to know something of its nature (what it is to drive it fast or in curves etc...)

Thanks!!

-N.K.
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#2 (permalink) Old 04-10-2005, 08:46 PM
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Quote:
Originally posted by N.K.@Apr 10 2005, 12:54 PM
Hello!

I'm planning to buy e39 540i and I'd like to know if there are possibilities to boost the motor. The motor itself is quite low-tuned (i don't know if that is said right) so i wonder
if one could get all the horses out.

If somebody has good tips, I'll receive them with pleasure!!

And I'd also like to know something of its nature (what it is to drive it fast or in curves etc...)

Thanks!!

-N.K.
[snapback]329446[/snapback]
NK -
You are doing the right thing by doing your research before you buy, and you definitely targeting a truly great car - the E39 540. While I admit that the perception of "power" is somewhat subjective, I disagree with your statement that the 4.4L all-aluminum 4-cam 32V engine is "low-tuned", or underpowered in the E39 at 282hp, at least for its day. Power isn't the whole story, either - there's the table-flat torque curve to consider as well. With the 6-speed manual (55 pounds lighter than the automatic), the 540 is pretty darn quick in stock form, AND returns fair mpg (I get 24mpg daily average).

To answer your question more directly - there are ways to wring more power out of the beast, but compared to some other makes (notably Japanese brands) boosting power isn't cheap, nor do the "usual" methods result in much improvement. Oh, the usual tricks are available - straight-tube intakes, low-restriction exhaust, underdrive pulleys, chips - but they don't provide much power difference and usually cost more, AND create potential dreaded check-engine-light issues.

It's the same old story: "How much power do you want?" = "how much money can you spend?", but even more so because the incremental increases cost more incremental money.

The good news is that there are aftermarket solutions aplenty, so there's lots to look at and consider, even though it is expensive. Also, handling, braking, and cosmetic mods are actually reasonable, especially using aftermarket stuff. One nice feature is that the M5 exists, and so many of its goodies, notably the sway bars, retrofit to the 540 and are available for a reasonable cost from most BMW dealers. I bought an M5 rear sway for $107, while the front one is $111, plus a nominal charge for rubber bushings. The rear is an easy swap-out, whereas the front is more involved.

There are multiple, albeit expensive, supercharging options available, making 450hp and more. But this is no Chevy small-block/LT1/LS1/LS2.

I recommend you check out the following sites:
http://members.roadfly.com/kowached/welcome1.htm
www.540i6.com
http://www.zeckhausen.com/

Join the car club (BMWCCA). Great magazine, plus discounts on parts and labor at many dealers and elsewhere.

That should get you started. Come back if you have any more specific questions.

<span style='colorurple'>Eric S.</span>
2006 Honda Odyssey EXL-RES
2006 Honda Accord V6 EX-L Sedan
1999 BMW 540i 6-Speed (Sold to M3UOND on 9/21/06)
1991 Honda Civic Si - Occasional Beater
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#3 (permalink) Old 04-11-2005, 01:47 PM
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Dinan offers some pretty nifty upgrades and they do have a supercharger available for the E39 540. Check their site out, just google it for the URL.

Hope this helps.

Scott
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#4 (permalink) Old 04-11-2005, 03:48 PM
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Thanks guys for your help!
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#5 (permalink) Old 04-11-2005, 07:51 PM
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Big HP boost will require bigger brakes. Add them to your list.
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#6 (permalink) Old 11-07-2005, 07:38 AM
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Yeah its nice u are buying that but NK if i want to see ur VbPicgallery so how is it possible do tell me ts bye...
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#7 (permalink) Old 11-07-2005, 05:50 PM
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Quote:
Originally Posted by dyami
Do you know by any chance that front and rear sway bars and bushings on a E34 M5 will fit on a E34 540?
of course.

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#8 (permalink) Old 11-07-2005, 05:51 PM
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ok I don't know how my post got put ahead of yours used:
but yeah... read my last post.

Whaaaaat .. AGAIN!?
how is this happening?

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#9 (permalink) Old 11-07-2005, 05:54 PM
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Quote:
Originally Posted by bgwoody
Big HP boost will require bigger brakes. Add them to your list.
not to be picky, but its always a smart idea to add stainless steel brake lines to those bigger brakes. add that to your list.


Eric S. - You mentioned that the M5 front and rear sway bars and bushings fit on the E39 540. Do you know by any chance that front and rear sway bars and bushings on a E34 M5 will fit on a E34 540?

Last edited by dyami; 11-07-2005 at 05:58 PM.
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#10 (permalink) Old 11-07-2005, 06:55 PM
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I have a 2001, 540i with the Dinan stage 4 engine software, CAI, Throttle body and mass meter and a remus exhaust and dinan light weight flywheel and clutch assembly. My car is pretty damn fast and has great torque. Dinan claims that with their upgrades, I should have 340 HP, I would say it is closer to 310-315 HP. I have never Dynoed my car. If you truly want to get a lot more horse power, SC the car or save your money and buy an E39 M5. A lot of the upgrades or mods for the 5 series are expensive and so is the maintenance. www.beastpower.com is a great web page for upgrading a 5 series. PM me with more questions. I attached some pictures of my baby!
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#11 (permalink) Old 11-07-2005, 07:59 PM
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Quote:
Originally Posted by dyami
not to be picky, but its always a smart idea to add stainless steel brake lines to those bigger brakes. add that to your list.


Eric S. - You mentioned that the M5 front and rear sway bars and bushings fit on the E39 540. Do you know by any chance that front and rear sway bars and bushings on a E34 M5 will fit on a E34 540?
Sorry, I am unfamiliar with the E34, so I cannot speak to the M5 to 540 sway bar swap on those!

<span style='colorurple'>Eric S.</span>
2006 Honda Odyssey EXL-RES
2006 Honda Accord V6 EX-L Sedan
1999 BMW 540i 6-Speed (Sold to M3UOND on 9/21/06)
1991 Honda Civic Si - Occasional Beater
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#12 (permalink) Old 12-25-2005, 01:21 AM
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hmm - I wonder how the ESS compares to the VF supercharger kit. I've heard of the ESS kit a lot more.
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