Burned at the lights by a new 335i!
- Thread starter Motto
- Start date
So we should really separate comparing modified cars to ours and standard cars to ours. Of course there is no way a standard 3.0, 3.0Si or Z4M could keep up with a modified 335 / 135 if they're running 370+ bhp along with the torque from the turbo.
However, the 335 as standard has come is anywhere between mid to high 5's to 60 - pretty much the same as a 3.0Si Z4, and much slower than a Z4M. I've managed to keep up with a 335i saloon giving it the beans from about 10mph - we kept on going to about 80ish when I backed off - nothing much in it. To be fair, he was probably having an easier time in his car with all that torque - but nevertheless, I was pretty happy with that.
Now - for the American readers, something I have never understood... the US magazines seem to be able to extract much better acceleration times that the European mags, generally I seem to see a 0.5s faster 0 - 60 time for example... then you start seeing 335i's with 0 - 60 in 4.x and even the 3.0Si getting down to 5 dead. Could anyone explain???
However, the 335 as standard has come is anywhere between mid to high 5's to 60 - pretty much the same as a 3.0Si Z4, and much slower than a Z4M. I've managed to keep up with a 335i saloon giving it the beans from about 10mph - we kept on going to about 80ish when I backed off - nothing much in it. To be fair, he was probably having an easier time in his car with all that torque - but nevertheless, I was pretty happy with that.
Now - for the American readers, something I have never understood... the US magazines seem to be able to extract much better acceleration times that the European mags, generally I seem to see a 0.5s faster 0 - 60 time for example... then you start seeing 335i's with 0 - 60 in 4.x and even the 3.0Si getting down to 5 dead. Could anyone explain???
Edmund's Insideline test 0-60 from a standstill and also with a 1 foot rollout which will give a lower 0-60 time. Perhaps this is what the magazines are quoting. Also US magazines tend to get off a lot with figures and exact tests and everything and so im guessing they have the equipment to measure 0-60 or 0-100 times. Most UK mags usually quote the manufacturer figures.
ga41 said:
That is almost entirely it, rollout.
Why they apply rollout used for drag times to 0-60mph times is beyond me, but it makes things look quicker
All said and done, you could blow a 335i into the weeds with a tuned up a bit Evo VIII or something for less than the price of a 3.0i Z4.
Speed is kinda irrelevant really. It's about how fun it is at any speed. The 335i is faster, wow, a car with more power to weight is faster. Shock!
Give me £20,000 to spend on a fast saloon and as said, you'd have an Evo or something playing with F430's and pissing all over a 335i!
Dave
Motto said:
If you had an automatic transmission then (from what those with the auto & Sport button say) pressing it would make a difference. However with your manual transmission it wouldn't have made any difference as the sport button doesn't provide any addition engine power.
Ha ha, press the sport button! As we all know even the starship enterprise fears the sport button in a drag race! 
The twin turbo setup is hugely powerfull. And i guess if you were to replace the turbos with bigger units, bigger intercooler, remap etc etc you could go for any power figure you like. All turbo'd cars are highly tuneable, the only dependant is the availabilty of parts and the strength of the engine internals.
The twin turbo setup is hugely powerfull. And i guess if you were to replace the turbos with bigger units, bigger intercooler, remap etc etc you could go for any power figure you like. All turbo'd cars are highly tuneable, the only dependant is the availabilty of parts and the strength of the engine internals.
Dreamer said:
Not quite true....
....the displacement of the engine limits the size of the turbo you can apply.... if you dont have the exhaust mass flow to power a larger turbine, then putting a bigger turbo in will destroy your performance. Operating the turbine at such low RPM will obviously give you very little boost from the compressor. If you want a turbo with a large compressor and small turbine then you are also limited... the mismatch between turbine and compressor inertia leads to terrible shaft motion which will destroy the bearing system... The turbos used in the 35i engine will be of the latest technology, this means very efficient comp/turb wheels, low friction bearing system, and they are probably variable turbine geometry... any turbo u replace it with aftermarket will tend to be of an older generation, probably wastegated and will probably give a lot of lag......
By the way, Im an Application Engineer for Honeywell Turbo Technology (Garrett).
The 335i just uses two small fixed geometry vacuum actuated wastegated turbos.
Probably just very very well matched small turbo's to give that flat output and good response etc. They still seem to remap to about 380/400bhp or so, but clearly they will feel more laggy because of the higher boost requested.
I guess the next step is like the 997 Turbo's turbos, with VNT turbines, then you could run a better compressor/turbine combo but still retain good low-end response/torque BUT get the top-end power
Still, I just say fit a bigger engine, or a supercharger
Dave
Probably just very very well matched small turbo's to give that flat output and good response etc. They still seem to remap to about 380/400bhp or so, but clearly they will feel more laggy because of the higher boost requested.
I guess the next step is like the 997 Turbo's turbos, with VNT turbines, then you could run a better compressor/turbine combo but still retain good low-end response/torque BUT get the top-end power
Still, I just say fit a bigger engine, or a supercharger
Dave
Mr Whippy said:I'd have just folded the roof down and then blipped the throttle a few times to bask in the instant responding NA motor soundtrack direct to your ears
If they don't get why their turbo lardy coupe is inferior after that, then there is no helping them:lol:
Too bad the 335I shows very few disadvantages of a turbo. There is almost no lag to speak with and there is just insane amounts of power to be had from this engine. The n54 is very, VERY capable and I am not surprised that OP was smoked by one. Thats even if it was stock.
It's disadvantages will be seen when they are at 100,000 miles and expensive components associated with them start going wrong (maybe)... the M54 has proven itself as a fairly bullet proof long-term engine
That said, yes, the N54 is proving why a GOOD turbo setup (twin small ones) can almost feel like a 3.5 or 4.0 V8 NA in most respects... just that ever so soft throttle response, and I guess, fairly high expense to buy...
I'd certainly have one in the 1 series Coupe... just not sure I'd want one in an out and out sports car for enjoying simply for driving at all.
Dave
That said, yes, the N54 is proving why a GOOD turbo setup (twin small ones) can almost feel like a 3.5 or 4.0 V8 NA in most respects... just that ever so soft throttle response, and I guess, fairly high expense to buy...
I'd certainly have one in the 1 series Coupe... just not sure I'd want one in an out and out sports car for enjoying simply for driving at all.
Dave