rominl

iTrader: (4)

i have an account on m5board just fine and i had a e93 m3 so i know very well how these engines work. if we come down to normal driving then all these are just bs talk. the lag is there period.

and i guess your butt and my butt feel very differently. the new 328 i have driven and that thing doesn't feel that fast at all and in order to try to be fast, it is loud, compared to any of the v8 cars i have owned.

ISFPOWER

iTrader: (20)

the 2013 328i does not feel quick to you at all? whaaaaa? you are the first person so far ive read that said that. the n20 motor in the f30 13 328i is quiet and feels quick as hell. funny that is coming from someone that owned the e9x m3 which feels torqueless down low. i was going to buy that but what a disappointment compared to the e46 m3 throttle response

. although the 328i doesn't have good engine sounds and cool noises, the torque on that car feels amazing when you are getting 35mpg. it also has one of the most powerful 4 cylinder motors right now. i suggest another test drive with the sport mode on

you are right, our butts feel differently. what are cars TO YOU that you driven and feels fast?

SteVTEC

I've had a couple of BMW loaner cars with that 2.0L N20 turbo engine and I've been quite impressed. I'm completely hung up on the smoothness and character of the Inline-6 engines so I don't think I'd ever buy one, but it's without a doubt the best 4-cylinder engine I've ever driven. It still sounds like a 4-banger, but it's sporty and engaging and has beautiful power delivery, and doesn't have bad NVH issues or make any nasty sounds. There's definitely a bit of turbo lag but very brief, and once it gets going it pulls nicely. In an X3 with the extra weight, drag, and AWD bogging it down, you can feel the engine start to wheeze as you're getting up to higher speeds (80+), but it's a perfectly good engine for the majority of people. It's definitely better than the outgoing N52 3.0L NA I-6 (230hp/200tq), but that engine was factory de-tuned and probably not the best comparison. A better comparison would be full-spec N52 or N53 with 255-260hp and 220-230tq. I test drove a 2011 BMW 528i F10 with the 240hp/230tq NA I-6, the last NA I-6 in a 5er, and it was a beautiful engine, much more engaging to drive and a whole lot better sounding than the N20. Throttle response is definitely sharper and more crisp on the NA Bimmer engines than any of the turbos, but most of the time I don't really notice or care.

BNR34

iTrader: (1)

I believe the LFA felt fast to rominl, if his blood was boiling, it must meant it felt fast

BNR34

iTrader: (1)

Let me get this straight, you feel the E9x M3's V8 have worse throttle response then the E46 M3's Inline 6?

BNR34

iTrader: (1)

You just proved there is no replacement for displacement, even comparing turbo to turbo, displacement always helps.

BNR34

iTrader: (1)

If you are gonna talk crazy, go all the way.............16.4 should satisfy most people on power and delivery

BNR34

iTrader: (1)

8.0L with 4 tiny turbos must not have much lag

THAT torque curve should be pretty flat.............lol.

ISFPOWER

iTrader: (20)

throttle response and low end torque. doesn't have that same "feel". i was quite dissapointed with the e92 m3 i test drove. WOT, felt good but driving around the strip, doesn't even feel like a v8 motor, had no grunt at all. that's why i went with lexus

BNR34

iTrader: (1)

I meant comparing to the E46 M3's motor, you think the E9X V8 feels worse?

ISFPOWER

iTrader: (20)

no, it doesn't feel worse. maybe i was just hoping it was a drastic difference. but the e46 had instant throttle response and felt torque'r down low but the e9x is the stronger motor between the two.

Infra

iTrader: (1)

Displacement does not refer to cylinder count...

But yes, there's no replacement. FI is simply increasing effective displacement. It's the amount of air.

n = PV/zRT

Increase pressure, increase the number of O2 molcules, increase power per combustion cycle.

fly2low

For power only, of course displacement helps. For overal car characteristic, displacement could hurt. Big engine is more weight and is more momentum to carry. Hence, some automakers prefer to use forced induction: you can achieve more power without disturbing the balance. So, yes, displacement is somewhat replacable but one still can't dodge this: speed costs money.

fly2low

On separate issue, maybe it is the age thing. I m getting old. I used to like the idea of muscle car: stuff the biggest engine possible in the chassis. Now i am looking more for balance. A couple last test drives confirm this. For the same chassis, i prefer the more balanced offering despite the reduction of power. For example, Audi A6 2.0t quattro vs 3.0t, jaguar xf 2.4t than 3.0t. They are more fun to flock around.

Outrage

All of the plumbing for a turbocharger, plus an intercooler, often times weighs more than a larger engine block would.