Chef's E39 530d

[osiris]

I had a boost leak which made my power quite crap, 112KW and 360nm, but the boost leake was bad! After I fixed it I made 139kw and 451nm, so I think you may have a slight boost leak, I would check the intercooler for any excess build up of greas and muck on either of the corners, as they are notorious for leaking as they are built part plastic and part metal.

 

[ChefDJ]

Howcome bud? You think the figures are bad or what? :fencelook:

 

[XMAX]

I dont think that your car is tuned... but thats alot of torque...

 

[UpNcOmiNg!]

That graph is impressively linear especially if it's not tuned considering he age of the car.

 

[ChefDJ]

But I want to understand why it's like this :fencelook: Me no engine boffin.

 

[ChefDJ]

 

[S1NGH 001]

Have you broke yours :fencelook:

 

[ChefDJ]

No :fencelook: bought the car with the left one cracked, and plastic surrounding missing

 

[Ga-3M]

But I want to understand why it's like this :fencelook: Me no engine boffin.

Basically your engine is still in very good shape considering the age of the car, not that it's that old though(10 years all good), it's been well maintained and is still operating at optimum levels:thumbs:

 

[spawn616]

surround?no clue,goldwagon 600 for the pair

 

[ChefDJ]

surround?no clue,goldwagon 600 for the pair

They told me they don't stock those for the E39

 

[ChefDJ]

But can that cause an engine to perform even better than new? From 410Nm on the flywheel to 430Nm on the wheels? That's a major difference. I'm not sure what standard on the wheels is in terms of torque... But I'm positive it's less than 400Nm if it's 410Nm on the flywheel.

 

[msm]

I don't want to start a debate on numbers, but I think KAR's dyno is quite optimistic too. Here's a stock 330d LCI that made 550nm, which is 30nm more than stock: Dyno Link

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I'd say your car is stock and very healthy :thumbs:

 

[UpNcOmiNg!]

Seems like that the norm, mine made basically 30nm more than stock too

 

[Ga-3M]

KAR's power figures are pretty reliable, I'd say the torque readings are slightly high, but I've noticed this on a couple of dynos where BMW's petrol and diesel turbo motors, especially the 6 cylinders, are recording torque figures much higher than stock!! Think BMW are just under-quoting! I wouldn't be surprised at all with a 330d lci recording that figure of 550NM, they are super strong standard!:thumbs:

 

[ChefDJ]

From 410 on the fly to 430 on the wheels is a bit more than 30Nm. That's what's worrying me

 

[Rolf]

Without another reference graph you can not conclude what power you got.

No info on rated power, temperature, humidity, airpressure nor was the dyno set to Turbo Diesel.... and YES it does make a difference.

 

[Rory]

My seat also made more torque atw than the atf rating at KAR. Don't think you have software already.

 

[Ga-3M]

Yeah bud don't stress too much about the torque rating, dyno is just a tool and not written word the results you get, just gives you an idea. For instance, you may go to another dyno and on that dyno your car may only record 390NM, it's just the way the dynos are setup. What you'd need to do is get someone with a stock E39 530d that you know for sure is stock, and run that car with yours back to back on the same dyno with the same settings, and that would give you a more accurate idea of how your car's performing.:thumbs:

 

[ChefDJ]

I also don't see how the car will have performance software. Previous owner was an oldie. But I'll take it to another dyno. Anyone you can recommend?