Quote:
Originally Posted by racer_x
Hi Guys,
Please forgive the noob questions. I am new to these turbo BMs.
I test drove my first 135i today and noticed the car was not as smooth as I expected when accelerating. The car is a 2008 model with @ 50,000 kms.
It seemed to me that around 2500 the turbos kick in noticeably. The car did not seem to be down on power or anything but it was not a smooth build up of power as the revs rose. Is this normal? Or does it need tuning?
Please forgive my ignorance but I've not driven a lot of 6 cylinder turbos. I was expecting a power deliver similar to a normally aspirated engine?
Thanks in advance.
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No, it doesn't drive like a N/A - that's the point
of a turbo. You might have it confused with the response is very close to a N/A. However, never got that in my 135i before, but with the 1M stock tune it was noticeable when the overboost kicks in. It almost felt like it is running out of steam and all of a sudden you get more boost.
I had a ESS tune which gives a much more linear delivery of power.
I suspect the example you were driving has a tune and not tuned very well.