How to get more HP out of the 545i

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Jul 19, 2006 | 10:01 AM

#11

vegastrashed

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From: San Diego, CA

My Ride: 2007 E63 AMG | Obsidian Black | Schwarzes Nappa | Black BirdEye Maple | Premium II Package | Electronic Trunk Closer | Parktronic Engine: RPi/Powerchips custom ECU tune, RPi Ram Air Kit (BMC filter, scoops), RennTech Sport exhaust, secondary cats, charcoal and resonator delete, custom AAA x-pipe Exterior: 50% side windows / 35% rear window Formula One Pinnacle Series | Flat AMG hood emblem Suspension: Renntech Lowering Module Wheels/Tires: Radenergie R10, Falken FK452 245/30/20, Yokohama ADVAN Sport 285/25/20 ----------------------------------------- 2005 545i Sport SMG | Ti Grau | Schwarzes Dakota | Anthracite Maple | Logic 7 | Nav Engine: Custom AFE CAI, Superchips ECU remap, Sprint Booster, RDSport Dual Exhaust Conversion with Quad Pipes and X-pipe, 3 resonators deleted, 90mm tips! Exterior: M-Tech Aero kit | M5 Mirrors | M5 Rear Bumper | Trunk Lid Finisher | Vorsteiner decklid spoiler | 50% Formula One Pinnacle Tint Suspension and Brakes: Bilstein PSS9 coilovers, JBT BBK: 16" cross-drilled rotors, 8 piston and 15" cross-drilled rotors, 4 piston Wheels: VIP Modular VR 02 20x9F, 20x10R | Toyo T1R 245/30/20F, 285/25/20R Lights: PIAA 4150K Xtreme White Plus fog lights, AIB v3 MOST IMPORTANT: Hardwired V1; =) ED Date: 4/7/05, Re-delivery date: 5/21/05

Quote:

Originally Posted by aybeesea' post='312685' date='Jul 19 2006, 10:55 AM

Well the fuel in a full tank weighs the same as a sturdy dude.

ABC

ABC, you keep bring up good points!

If you are planning on racing, do so with quarter tank of gas. Like ABC mentioned, gasoline is heavy and a full tank of gas can hurt your chances of winning.

Jul 19, 2006 | 10:01 AM

#12

znod

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From: Austin TX

My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red

Welcome, and you might want to check this thread out. It deals with mods/performance and with warranty issues or non-issues depending on one's view of things.

Jul 19, 2006 | 10:04 AM

#13

vegastrashed

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From: San Diego, CA

Quote:

Originally Posted by Ag229487' post='312687' date='Jul 19 2006, 10:57 AM

Jilo- what do you think of your 545- positives negatives?

Is the SMG smooth?

Negatives - What negatives?

Positives - Powerful. Fast. Beautiful.

SMG is silky smooth only when you have learned how to drive it properly. Otherwise, it is jerky.

Jul 19, 2006 | 10:07 AM

#14

vegastrashed

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From: San Diego, CA

Haha... The "dude" you mentioned about dropping weight just posted to your thread as I knew he would. Hi Znod.

Jul 19, 2006 | 10:17 AM

#15

znod

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My Ride: 2014 X5 xDrive 5.0 M Package Carbon Black Metallic/2008 M Roadster Imola Red

Quote:

Originally Posted by jiio' post='312694' date='Jul 19 2006, 01:07 PM

Haha... The "dude" you mentioned about dropping weight just posted to your thread as I knew he would. Hi Znod.

Hi jiio:

Yep, everyone should get to the gym and to Jenny Craig.

But, if anyone is interested in weight reduction, then just click on the "Mind Candy" link in my sig.

PS: Check out the latest on the "Just for Fun" thread. Pretty interesting.

Jul 19, 2006 | 10:53 AM

#16

Bimmer32

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From: Houston, Texas

My Ride: 2005 BMW 545i, Silver Grey, Sport Package, R. Shades, Cold Pkg, Sat. Rad., Prem. Sound.

Quote:

Originally Posted by Ag229487' post='312680' date='Jul 19 2006, 12:52 PM

Okay cool-

Well has anyone gotten the flywheel that Dinan offers- what kind of gains/improvements has that shown?

I read the one dudes post on dropping weight and he does have some good ideas on there which I may take up- I don't know if I'd want to get new rims though I do like the ones that the 5 sport package comes with

Weight is your best and cheapest friend when it comes to increasing performance. If you can loss about 400 lbs, you've gained about 35 hp in the 545i/550i. Dinan's claim with (with exception to the differential) have not been proven to give HP gains. If I remember correctly, Znod said his Dinan mods didn't help a bit. The bimmer ECU is too smart and will correct any minor "supposed" HP gain mods over time.

Jul 19, 2006 | 11:19 AM

#17

vegastrashed

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From: San Diego, CA

Quote:

Originally Posted by Bimmer32' post='312723' date='Jul 19 2006, 11:53 AM

Bimmer32, you are crushing my beliefs that Dinan engine mods will increase HP.

At least you acknowledge that the differential is the real deal. The diff is definitely in my immediate future.

Jul 19, 2006 | 12:48 PM

#18

znod

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Quote:

Originally Posted by jiio' post='312738' date='Jul 19 2006, 02:19 PM

Bimmer32, you are crushing my beliefs that Dinan engine mods will increase HP.

At least you acknowledge that the differential is the real deal. The diff is definitely in my immediate future.

I like weight loss and diffs since they are, as B32 suggests, the real deals for sure. I also like drag radials if one has spin-control problems. They also are the real deal if one has the spin problem.

I like other kinds of mods too, but, at this point, only when I have seen non-manufacturer proven results based on what I judge to be competent controlled testing using either a meter, a dyno, or a dragstrip. For example, from competent testing, I know that I would get my money's worth out of several kinds of intake plus dyno turning on my Z06. But, for many cars, such test results simply aren't available.

Also, I might be willing to gamble on mods such as the Dinan mods if I was willing to do controlled before and after testing. If my tests did not bear out significant improvements, then I'd take the mods off since the last thing I would want is a modded car that is little, if any, faster than an unmodded one. In this regard, I'd leave a muffler on if I liked its sound since I would not expect any noticeable or measureable performance gains from one in the first place--unless possibly because of its use in connection with other pieces.

Jul 19, 2006 | 01:04 PM

#19

Ag229487

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You guys think its possible to turn the 545 to a 4 second car?

Jul 19, 2006 | 01:07 PM

#20

vegastrashed

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From: San Diego, CA

Yes. With a $9K VF Engineering supercharger and $2K 3.73 differential, you will come close to 4 secs. Most likely around 4.3. Enough to probably beat e60 M5, E55, and CLS55. Not a Vette Z06. Those are sub 4s.

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