How much HP do you think I have? - United Bimmer Community

**dinan540** · 06-30-2006, 03:46 PM

Tomorrow, I am having my car dynoed with the local bmw car club.
How much HP and torque at the wheels do you guys think I have?

I have a 540i sport, 2001, 6 MT.

Here are the mods:
Dinan Stage 4 Engine Software
Dinan High Flow MAF
Dinan Cold Air Intake
Dinan Throttle Bodies
Dinan light flywheel and clutch
Remus exhuast

Paul

**EnvyM3** · 06-30-2006, 04:02 PM

Are you dynoing it with or without the leafblower mod?

craig · 06-30-2006, 04:09 PM

considering i have absolutly no idea what the stock hp is on those, im just gunna guess 400. lol.

**celsdogg** · 06-30-2006, 04:48 PM

^^^ lol. thas E39 M5 range. . . but very probable!

i think stock 540i's have 290hp or somewhere in that range. and i think over 300 lb/ft of torque. . .

craig · 06-30-2006, 04:50 PM

^oh, in that case, i would guess about 350-375. 400 tops.

**xsperf** · 06-30-2006, 04:52 PM

285RWHP, 330ft/lb

**dinan540** · 06-30-2006, 05:15 PM

^^^ I think xperf is right. It will interesting to see tomorrow. I am not sure what kind of dyno machine they have. celsdog, the 540 has 286 HP and 300 lb/ft of torque stock.

**celsdogg** · 06-30-2006, 05:29 PM

close

witeshark · 06-30-2006, 07:25 PM

I'ma guess 295HP and 325 ft-lbs

Rooz · 06-30-2006, 11:11 PM

~300rwhp and easy 350-400 torque...

**doughboyea** · 07-01-2006, 12:08 AM

Just so we're clear...

Stock figures:
HP: 282hp
Torque: 324lbft.

My guess?
Considering that it's kinda hard to pull alot of HP from my car... I'm going with ~300-310hp (crank). But of course I could be way off on that. I'm not too keen on the 4.4L V8.

Dough

Storamin · 07-01-2006, 11:52 AM

300 hp at the engine with about a 11-13% drivetrain loss. The clutch & flywheel will make the car faster but not come out on the dyno.

**Spieluhr** · 07-01-2006, 01:11 PM

Where are you guys dynoing?

**Torque** · 07-01-2006, 03:30 PM

275 rwhp and 330lb.ft

**BMWLotAttendant** · 07-01-2006, 03:55 PM

315hp and 345 lb-ft

Rooz · 07-01-2006, 07:58 PM

Quote:

Originally Posted by BMWLotAttendant

315hp and 345 lb-ft

Is that from a Dyno?

**dinan540** · 07-05-2006, 12:44 PM

I don't have the graph with me, The HP at the wheels was 255 and torque was 282. I am not sure if I should be dissappointed or not. It was hot and a 20 mile drive to the dyno place. If you figure 15-18% loss.

I calculated with 15% loss approx 300 HP and 330 lb-ft of torque. I checked the dinan webpage and they calculate with my mods 315 HP and 340 lb-ft of torque. Maybe they calculate with an 18% loss of power. They burned a CD with the 3 runs and some other tables. I will post it sometime this week.

It was fun to see some of the other cars on the dyno. The new M5, an E39 M5, a 2002, and about 20 other cars. My digital camera is broken, so no pictures. If you haven't dynoed your car, it is fun to do.

**xsperf** · 07-05-2006, 12:50 PM

no you shouldnt be disappointed, thats very good b/c that is rear wheel horsepower, not at the crank, and you know your never actually going to get the exact numbers they give you

**RealBmw 02** · 07-05-2006, 04:13 PM

those are pretty good numbers. No reason to be dissapointed with those. What kind of numbers did the other cars post?

**dinan540** · 07-05-2006, 06:34 PM

The new M5 posted 413 HP to the wheels and I didn't catch the torque. The e39 M5 posted 335 HP and I didn't hear his torque. I will post more later today. I have to get back to work.