Quote:
Originally Posted by JD75
Hey mate,
as has already been mentioned an engine running at higher operating temps will be more efficient.
This increased efficiency will lend itself to both improved fuel economy and reduced emissions.
Obviously the above is a win win for the BMW owner.
However if that same owner is intending on tracking the car, I would suspect at a minimum they are running a "tune".
FYI,
on an otherwise stock vehicle (save a Dinan CAI), my car via a Vishnu PROcede "tune" on Map 1 produced 230 rwKw and on Map 2, a not so disappointing 250 rwKw. 
It dynoed up at a 190 rwKw baseline just prior,
so here we have a 60 rwKw gain via just the PROcede, cheers Adrian. 
If you throw on some catless downpipes, which according to Pete at Advan appears to be the "flavour of the month", you would be looking at 260+ without breaking a sweat.
Just to be clear I am talking about the N54 here, I do not have that much experience with the N55 powerplant, but my limited research suggests that the N54 generally responds better to the same mods.
So with a "tune" and "catless" pipes you have bumped up engine output by approximately 37% + or -, depending on how happy the specific N54 is.
Just out of curiosity does anyone know what a 1M dynoes up at?
I suspect it is somewhat South of 260 rwKw and I guess BMW did NOT see fit, to up the cooling capacity of their formidable "track ready" M car. 
I would be a little concerned to say the very least, if I saw my oil temp guage licking 130 degrees Celsius. 
In the short term I suspect you will get away with running operating temps under extreme engine duress intended for a stock vehicle.
However depending on how much power the engine is NOW developing and to what degree you push the car, it could end up being a VERY expensive exercise.
In summary guys,
if you "want to play you have to pay".  |
JD75, thanks so much taking the time to respond mate. Much appreciated.
Firstly, the numbers your car puts down is just insane and hats off to you and Advan gents for some amazing work and development.
Definitely agree with your summary and I do believe any 'tune' or power upgrades should always be met with corresponding upgrades to cooling, breaks and suspension. Ultimately I think it's down to what people want from their cars.
For me personally, the 1M is mostly a DD. It does the task remarkably well with just over 10K kms! I'm not really interested in modding it and the occasions I do take it on the track - the cars capabilities exceed my own greatly. My concern with the temperature was that 130C seemed extremely high but the car seemed very happy doing this. I pulled in after 2 laps at this temp but guys in the US seemed to have run all day with no issues.
My car is completely stock except for track wheels. I think Sparoz's dyno came in and just north of 200rwkw - so a long way off what you are doing. I think it supposedly has an extra cooler, but it's effect is hard to say.
I know this particular thing will next be 'track monster' but it's great fun. So, I now have a GT3 to try and be a hero in!
Thanks again.