[vincechase]

is it me or does anybody else notice that throttle response lag on the g20 330 when you need to pass some one or accelerate at some point

I fee like bmw severely under powered the bmw 330 to make more money on the 340 and I am not having it lol.

I felt like even my e90 330 was quicker from the step on.

Anybody know how I can fix this but still stay in warranty with my lease.

Thanks

[upsidedownfunnel]

It's most likely an issue with the boost threshold that you're feeling. The "throttle response" issue you're feeling might also have to do with emissions control that gradually opens the throttle plate to prevent running lean and more emissions.

Either way, your new 330i is almost definitely faster than your E90 330i. Your old car just didn't have the problems with boost threshold and turbo lag your current car does.

By the numbers, your old car did 0-60 in 6.2s and the new car does 0-60 in 5.2. Even more, the G20 330i does 5-60 in 6.4s. I couldn't find 5-60 figures for the E90 330i, but it is probably around the 7 second range. So even without spooling up the turbos, the G20 is still faster.

I'm not sure where you get the idea that BMW is "severely under powering" the B48. It's consistently one of the faster cars in its class (2.0T 4 cylinder compact luxury cars). If you want more acceleration, you would have had to go with the more powerful car. I don't know any 4 cylinder car in this class that goes any significant amount faster than the 330i.

[premier3is]

There's literally no noticeable throttle response lag. If so it's incredible minor.

Also, your e90 330i was not quicker lol, not sure where you are getting that from.

And for your last question, there's no 'fix'. Did you not test drive the car prior to purchasing?

[VipinLJ]

Originally Posted by premier3is

And for your last question, there's no 'fix'. Did you not test drive the car prior to purchasing?

The only fix I can think of is a pedal box like sprint booster or something that alters the throttle map. Not sure if one is available for the G20 but yea.

[A6bullet]

are you in eco-PRO?>
Theres a lot of lag int hat mode for obvious reasons.
Comfort and Adaptive are pretty good I would say with Sport obv being the best out of them.

It hasnt bothered me on my personal car.

[premier3is]

Originally Posted by A6bullet

are you in eco-PRO?>
Theres a lot of lag int hat mode for obvious reasons.
Comfort and Adaptive are pretty good I would say with Sport obv being the best out of them.

It hasnt bothered me on my personal car.

Totally forgot about eco pro lol. You're right this could be leading to OPs frustration, as Eco pro does have a major lag.

[vincechase]

Thanks guys, perhaps I'm being a bit dramatic lol.

I've just been blipping down using the pedal to get more instant throttle response and helps. Or being in sport. But my gf gets mad cause of the minor jerks but I don't notice it.

Is jb+ worthy ?

[chenry]

Originally Posted by vincechase

Thanks guys, perhaps I'm being a bit dramatic lol.

I've just been blipping down using the pedal to get more instant throttle response and helps. Or being in sport. But my gf gets mad cause of the minor jerks but I don't notice it.

Is jb+ worthy ?

JB+ or any other piggyback is not going to help you achieve what you are after. Options are a flash tune that also addresses throttle tip-in or something like a pedal commander or sprint booster. IMHO I think a sprint booster is exactly what you are after.

Granted it does not add power - and some will say "just push your pedal faster etc..." based on my first had experience it will absolutely address what you are talking about here.

Again pedal commander may be an option as well - just not as familiar with them.

Perhaps find a sponsor or amazon/ebay seller that offer refunds if you don't like the results....that said I don't think you'll be returning :-)

[alpinewhite3]

Virtually no lag here. This is the quickest transmission i've encountered out of any prior 3 series. Car *feels* much quicker than my old F30 328i in any gear / every speed.

Want to see what real lag feels like? Test drive a Volvo s60.

[ksd4aadg]

I remember noticing the lag when I bought the car initially when 1) mashing the gas from a complete stop or 2) when rolling under 10mph and mashing it to cross long intersections with cars coming in all directions. My last car was a naturally aspirated v6 so the engine build up was more progressive. This car's way faster even with the lag once the turbo kicks in. When at speeds above 10 mph, the response is pretty quick. This is one of the best transmissions I've had. I test drove the A5 and it was uninspiring. No engine note and definitely felt more ordinary.

[karonball]

I know what you mean.

I traded my E90 330i with N52B30 engine after owning that car for over 7 years and putting with it 75k miles.

I've done over 2k miles with my G20 330i, EU spec.
When i hit 'gas' pedal hard from the lights i feel that slight deley ( Even in SPORT+ )
E90 was more snappier.

Not trying to say that E90 was faster, but when you pushed it from the still position it felt a bit more responsive.

[stein_325i]

OP is this happening when you push fully on the throttle from a stop? Some cars are inherently designed to have lag from a standstill when "slamming" on the throttle from a standstill, the X2 M35i does this, not sure about 330i.

[vincechase]

Originally Posted by karonball

I know what you mean.

I traded my E90 330i with N52B30 engine after owning that car for over 7 years and putting with it 75k miles.

I've done over 2k miles with my G20 330i, EU spec.
When i hit 'gas' pedal hard from the lights i feel that slight deley ( Even in SPORT+ )
E90 was more snappier.

Not trying to say that E90 was faster, but when you pushed it from the still position it felt a bit more responsive.

Exactly what I was referring to but obviously nothing will help this so

[vincechase]

Originally Posted by jstein55

OP is this happening when you push fully on the throttle from a stop? Some cars are inherently designed to have lag from a standstill when "slamming" on the throttle from a standstill, the X2 M35i does this, not sure about 330i.

Right exactly that. Usually when I'm trying to turn right on a red light and cars are oncoming. Trying to get the buzz going fast enough before they come to close is disappointing at times lol. Like come on 330 I know you got the power, let's bring it on a tad earlier

[stein_325i]

Originally Posted by vincechase

Right exactly that. Usually when I'm trying to turn right on a red light and cars are oncoming. Trying to get the buzz going fast enough before they come to close is disappointing at times lol. Like come on 330 I know you got the power, let's bring it on a tad earlier

Yes that's most likely throttle lag, which you will mainly notice in 5-60 type driving or rolling starts (aka not using launch control and slamming the throttle for maximum power). The X2 M35 loaner I had, had this with terrible turbo lag, which is why the 5-60 numbers are much higher than 0-60.

[Danny Delray]

Originally Posted by vincechase

is it me or does anybody else notice that throttle response lag on the g20 330 when you need to pass some one or accelerate at some point

I fee like bmw severely under powered the bmw 330 to make more money on the 340 and I am not having it lol.

I felt like even my e90 330 was quicker from the step on.

Anybody know how I can fix this but still stay in warranty with my lease.

Thanks

VinceChase you are exactly correct. The dealer today told me that my car shows no issues when diagnosed and it's running properly. I said, "BS!" - I have the same issue with my brand new BMW 330i G20. Same as VinceChase describes and I find this unacceptable. When you "FLOOR" the gas pedal from stop or from any speed point (20, 30, 40, or 60MPH) the car still hesitates / delays for about 1 second before the acceleration is actually felt. That is not a high performance car. Yes, I still does 0-60 in 5.2 seconds, which says a lot for that 4 Cylinder but imagine if it didn't hesitate for that other 1 second. You'd be doing 0-60 in 4.? seconds. It may be something we just have to live with but it's dangerous to not have the power when you're expecting it. Any advice from anyone here is appreciated.

[Benjamin_Nicholas]

It's threads like these that make me wonder if people do any test driving or research into the money they spend on cars

[bavarianride]

I did experience 1-second delay in F30 328i in Comfort mode, but Sport mode had no such issue.

That 1 second felt more like the electronic throttle lag than turbo lag.

In G20, I do switch to Sport + M/S if accelerate from standstill is needed.

Or to pass, I either go 1/2-3/4th throttle or paddle down shift(both to pop rpm) then full throttle.

[AtticusHoy]

I experienced some slight hesitation with my 2018 430i when trying to take off from a stop sign and took it to the dealership. They recommended that they reset the (I can't recall the exact term they used) adaptive transmission memory/cache. That seemed to fix it for me.

I believe, on the F30 at least, there was a series of steps you could perform that would do a sort of "light" version of what the dealership could do. The steps were something like hold the gas down while parked and do some other stuff. Maybe someone here knows more about it, as it's been a while for me.

[Straight6Dave]

Originally Posted by vincechase

is it me or does anybody else notice that throttle response lag on the g20 330 when you need to pass some one or accelerate at some point

I fee like bmw severely under powered the bmw 330 to make more money on the 340 and I am not having it lol.

I felt like even my e90 330 was quicker from the step on.

Anybody know how I can fix this but still stay in warranty with my lease.

Thanks

This has nothing to do with BMW intentionally hurting the 330 to sell 340s. The 340 does the same thing! It's a result of being turbocharged where your e90 was naturally aspirated. That's the trade off you make with a turbo, if the turbo isn't already spooled your throttle response is going to suck until it gets going.

The solution to this is an anti-lag system which the F80 M3 has some version of but it's not something you're going to use while cruising on the highway, it's more useful to keep the turbos spinning while you come off high throttle for very short periods of time.

Throttle response is one of the things people point at when they say they don't like turbocharged engines. It's a valid criticism, but it's the price you pay for getting 300 horsepower out of a 2.0L I4.

[bavarianride]

Originally Posted by Straight6Dave

This has nothing to do with BMW intentionally hurting the 330 to sell 340s. The 340 does the same thing! It's a result of being turbocharged where your e90 was naturally aspirated. That's the trade off you make with a turbo, if the turbo isn't already spooled your throttle response is going to suck until it gets going.

The solution to this is an anti-lag system which the F80 M3 has some version of but it's not something you're going to use while cruising on the highway, it's more useful to keep the turbos spinning while you come off high throttle for very short periods of time.

Throttle response is one of the things people point at when they say they don't like turbocharged engines. It's a valid criticism, but it's the price you pay for getting 300 horsepower out of a 2.0L I4.

G20 does have launch control from dead stop:

1. Selector@M/S + Sport
2. turn off DSC
3. press brake pedal
4. kickdown throttle
5. wait for destination flag and then launch within 3 secs

The above is high temp transmission maneuver(high stress!) though.

To me just M/S + Sport + 3/4th throttle then full usually works ok.

And for passing with 1-second delay, it usually happens when cruising@8th gear and below 1krpm. It feels like the ECU ignores throttle input for a second or so. Again putting selector@M/S helps, or just paddle downshifts to wake up ECU and ZF.

[upsidedownfunnel]

Originally Posted by Danny Delray

VinceChase you are exactly correct. The dealer today told me that my car shows no issues when diagnosed and it's running properly. I said, "BS!" - I have the same issue with my brand new BMW 330i G20. Same as VinceChase describes and I find this unacceptable. When you "FLOOR" the gas pedal from stop or from any speed point (20, 30, 40, or 60MPH) the car still hesitates / delays for about 1 second before the acceleration is actually felt. That is not a high performance car. Yes, I still does 0-60 in 5.2 seconds, which says a lot for that 4 Cylinder but imagine if it didn't hesitate for that other 1 second. You'd be doing 0-60 in 4.? seconds. It may be something we just have to live with but it's dangerous to not have the power when you're expecting it. Any advice from anyone here is appreciated.

Originally Posted by Danny Delray

VinceChase you are exactly correct. The dealer today told me that my car shows no issues when diagnosed and it's running properly. I said, "BS!" - I have the same issue with my brand new BMW 330i G20. Same as VinceChase describes and I find this unacceptable. When you "FLOOR" the gas pedal from stop or from any speed point (20, 30, 40, or 60MPH) the car still hesitates / delays for about 1 second before the acceleration is actually felt. That is not a high performance car. Yes, I still does 0-60 in 5.2 seconds, which says a lot for that 4 Cylinder but imagine if it didn't hesitate for that other 1 second. You'd be doing 0-60 in 4.? seconds. It may be something we just have to live with but it's dangerous to not have the power when you're expecting it. Any advice from anyone here is appreciated.

That's just how most modern cars are. No one cares about throttle response and fun high RPM engines anymore. Everyone wants big HP numbers and fast 0-60 times.

When you extract 250+HP from a small 2.0L turbo engine you're NOT getting instant throttle response. That's why it took so long for Ferrari and Porsche to incorporate more turbo engines in their lineup. And why BMW made a naturally aspirated V8 and V10 on the E90/60 M cars instead of just going with turbochargers.