Um, JST, this might be a problem...
 

http://www.bimmerfest.com/forums/sho...d.php?t=182384

I hope this isn't the '01 330i scenario all over again.

Sounds like typical (non M) BMW :dunno:

Turbo engines typically have soggy throttle response compared to non-turbo cars. It is mostly because of the huge restriction in the exhaust system called the turbine. Not really any way to work around it.

That said, every throttle by wire BMW I've driven had very lazy throttle response compared to my cable-throttle E36 M3. Maybe when you combine the two contributors, bad things happen.

Presumably Josh test drove the 335 and doesn't have an issue with it.

With my '01 330i, it was something that became more apparent over time. Even if I had test-driven that car before signing the papers (I got one of the first 330s, I had test-driven an '00 328i which still had a partially-mechanical throttle), I doubt I would have really noted the lag.

That said, my '06 330i has virtually no lag, even coming straight from the E36 M3. There is a trace. But nothing like my '01 had.

I'm almost convinced my next new BMW will be either leased or a lightly used CPO.

Just too much uncertainty in all apects of their products to give me the warm and fuzzies.

It's the Microsoft syndrome. Rush new technology to the market without fully debugging it and then patch it as problems are discovered.

My uncle's '07 525i, same deal. Almost no throttle lag. They really improved the DBW on the recent models.

I've driven a couple of 335s and didn't notice an issue with the throttle response. In fact, both seemed noticeably better in this regard than my current car. Of course, the E90 330 might have even better response--dunno. We'll have to try them back to back and see.

BTW, I took the clutch stop out of my car the other night. What a difference (and not in a good way). The bizarrely long clutch pedal travel coupled with a short engagement zone really demands an aftermarket clutch stop. I didn't notice this issue with the 335, either.

Re: clutch stop

I still have my UUC stop and when I went to install it in my E90 I realized that there is no stop of any sort in it and, hence, no threaded hole to attach an aftermarket one to.

Very true. The e46 330i clutch REALLY needs a stop (I used rogue both times I had this car) while the e90 330i clutch doesn't.

I have a clutch stop on the ZHP and still feel that if I depress the clutch all the way to the stop, the shifts are still not smooth. I usually don't get to the clutch stop on regular driving. :dunno: The switch to start the car is too far back to make the clutch stop work well for me.

That sounds like your engagement is a bit high. The rogue stop has double plates so is height adjustable. If I put it at highest possible (to allow ignition), I found the travel too short.

You're either not adjusting the stop precisely OR
Your ignition cutoff is weirdly high OR
Your clutch engages too high even for a e46 (is wearing out :dunno:).

The various reports of problems with the N54 is what would put me off from purchasing the first model year of the 335.

There were a lot of people that had trouble with using clutch stops on the e46 b/c of the ignition switch. Someone designed an electrical work around iirc. I doubt it's Fernando's car or clutch.

I like the guy that complained about throttle lag. "do you think it's so great that it can't have anything wrong with it?" :lol:

And this reply: http://www.bimmerfest.com/forums/sho...7&postcount=20

:rolleyes:

I circumvented the issue on my '01. It involved drilling a hole in the clutch arm and putting a bolt through that would depress the switch earleir than the arm itself would.

Sometime thereafter cars no longer came with that pressure switch. There must still be a switch of course, but it is not easily accessible to fiddle with. The concensus as I remember it, was to install the clutch so that it would just barely allow the car to start and learn to live with whatever extra slop.

I would no tbe surprised AT ALL if the amount of travel required to activate the switch varies considerably from car to car since, from a design POV, given the long clutch pedal travel, allowing a sloppy margin could make assembly easier. After all, since they did not design for a cluch stop, the understanding is that the driver will simply push the clutch in all the way. In OEM form, that would work even if there were a varaince of over 1" in the travel required to activate the switch.

FWIW, it's not as if my clutch stop doesn't help. It does help tremendously. It's just not perfect. But I am still very glad I have it.;)

You may remember that I used to have an '01 325Ci...

I never put a clutch stop in it -- even though the excessively long clutch throw and high engagement point was very annoying. I eventually got used to it, but still never liked it. Probably about 2% of 1st gear starts were very bumpy because the clutch feel was so bad.

I now have an '03 530i -- while it still has a relatively long clutch throw, the clutch engagement point is much closer to the floor and has a better feel to it. I very rarely have problems in this car.

:lol:

Fernando, I know for certain that the switch point varied dramatically from car to car. I was lucky and had a decent stop spot. Friends . . . were not so lucky.

Of course, on the M3, I had the clutch stop set so the slightest movement engaged the clutch. Now that was a set up. (Everyone, and I mean everyone with one exception, stalled the car the first time they drove it b/c the pressure point was so close, even when I warned them.) I wish I could do that in my current car, not that it's bad in stock form.

I had an 87 Integra a long time ago that was like that. Took a long time to get used to it, but once you did, it was great. That's how a clutch should be.

I agree.

March production, 2001. The "fix" was to retrofit the old plunger.

Ther you have it folks.;)

My "spot" is not too bad, so I don't want to mess with retrofitting the plunger. I'm happy enough the way it is. Heck, I've yet to do a CDV-ectomy, and I've had the part for a while. Too busy.