Hi, new to this stuff. I thought my V6 wasn't as powerful as it should be. I had a rolling road test carried out today and guess what? The standard bhp should be 204bhp mine came out at 165.3bhp. The tester told me that this is very bad as most cars do lose a bit of bhp but not as much as 36bhp!!! He told me everything else was ok e.g the fuel and the torque. The figures as follows: CONNECTED POWER 172.9BHP ENGINE POWER 165.3BHP WHEEL POWER 101.0 BHP DRAG POWER 64.3 BHP MAX. POWER at 5175RPM TORQUE 256.9Nm Does anybody else have this issue? Are VW lying about the power of the V6 or is my car just weird? The tester did not know what the issue could be. Does anyone know of any checks or fixes? Thanks
a place called Street Racers (www.streetracersgd.co.uk) in Leicester - they state they can test upto 1000bhp
nice name. dynos vary from place to place with the figures they give out, some are optimistic, some read low. ideally youll need to know what other cars have put out down there. the wheel bhp is particularly low, nearly 50% tranny losses if the engine is meant to have 200bhp. ever had the car put on vagcom? does the car feel like its running odd? if a sensor is dead it may be in some sort of limp mode what did the torque plot look like?
Wheel power 101bhp?!? 4WD trany losses aren't that bad! Certainly something wrong. Get the car on the diagnostics to see if the ECU is complaining about any sensors like lambda or crank position sensor or whatever. Might be running in safe mode, though you'd expect a warning lamp on the dash if that was the case.
here's the graph - www.myspace.com/gunx10 the tester did have a problem with the rear offside wheel - he asked a couple of us to sit in the back while he did the run?? Oh and also he only had another read out from a R32 which read a BHP of 244 which sounds about right - the rest were all skylines and cosworths
I know that some 4motions have less power than you would expect. You might of got one of the lower power ones. They are slightly more powerful than a standard 1.8T unit.
Quote: The simple formula for calculating bhp is based on 33,000ft lbs of work being done in one minute. This amount of work is regarded as one horsepower. The formula is: HP = Torque x rpm 5252 From this you can see that when the rpm is at 5252 the HP and the torque are the same. If the power and torque lines do not cross here on the graph then someone is telling you porkies! We use the term "Brake" horsepower because the engine torque is measured on a device called an Engine Brake, or dynamometer as it is more correctly known. Dynos measure torque at a given rpm and then we calculate the bhp from there. With an engine bolted to a dynamometer we take the torque reading directly from the flywheel and without any form of gearbox ....... I can not expand your plot to check the above statement ...
i think you have to be a member of www.myspace.com (its free and only takes 2 mins) to expand the graph - sorry but as i'm new to this i don't know of any other way to show a picture of the graph I can tell you that the norm power and the Nm lines do cross The air con was off
no but i'm gonna try and get it hooked up now so i'll post the results as soon as it is done had any look looking at the graph?? (www.myspace.com/gunx10)
you need to get that VAG COM'd. 4motions aren't that much slower than R32's. I think you miught have a dodgy air flow meter or something. sounds like it's running in limp mode.
i know the V5s have two different outputs but whats a lower power V6 4motion? i thought the V6 had 204hp as standard?? was not aware there was different V6's.
I was getting confused the V5 has different power outputs. If BHP is low it doesn't matter a great deal as it all about torque in an engine.
