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Old 03-12-2018, 09:30 AM
kyle_farias kyle_farias is offline
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2016 BMW 320i horsepower with twin turbo

So I'm looking into my cars specs and realize that my BMW 320i only outputs 180 horsepower. Is the 180hp output with the twin turbo, or is it 180hp + twin turbo power? Reason why i am asking is because i also have a 2012 Jetta SE 2.5 that has an output of 170hp and when i compare the 2, the bmw is way more powerful, and i dont mean by a 10hp difference... How much more HP will me stock twin turbo add to my BMW's 180hp engine (If this is the case)?
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Old 03-12-2018, 09:33 AM
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Quote:
Originally Posted by kyle_farias View Post
So I'm looking into my cars specs and realize that my BMW 320i only outputs 180 horsepower. Is the 180hp output with the twin turbo, or is it 180hp + twin turbo power? Reason why i am asking is because i also have a 2012 Jetta SE 2.5 that has an output of 170hp and when i compare the 2, the bmw is way more powerful, and i dont mean by a 10hp difference... How much more HP will me stock twin turbo add to my BMW's 180hp engine (If this is the case)?
None 180 is all there is for a 320 2 liter turbo.
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Old 03-12-2018, 10:05 AM
Our BMW Our BMW is offline
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Also I don't think it has twin turbos as in 2. It's twin scroll as in 1 turbo but a split exhaust input.
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Old 03-12-2018, 10:13 AM
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bear-avhistory bear-avhistory is offline
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Yeah the twin turbo thing is a marketing department invention. They did not want to give up the words when the N54 with 2 individual turbos went into history with release of the N55.
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Old 03-12-2018, 10:13 AM
kyle_farias kyle_farias is offline
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Originally Posted by Our BMW View Post
Also I don't think it has twin turbos as in 2. It's twin scroll as in 1 turbo but a split exhaust input.
Mine does not have a split exhaust.
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Old 03-12-2018, 10:16 AM
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Quote:
Originally Posted by kyle_farias View Post
So I'm looking into my cars specs and realize that my BMW 320i only outputs 180 horsepower. Is the 180hp output with the twin turbo, or is it 180hp + twin turbo power? Reason why i am asking is because i also have a 2012 Jetta SE 2.5 that has an output of 170hp and when i compare the 2, the bmw is way more powerful, and i dont mean by a 10hp difference... How much more HP will me stock twin turbo add to my BMW's 180hp engine (If this is the case)?
If you look at your engine cover it says, Twin Power doesn't say Twin Turbo. People need to stop reading into things that aren't there. BTW, the power of that Jetta might be 170 hp it's still slow.
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Old 03-12-2018, 10:28 AM
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On paper it is 180hp with the twin (scroll) turbo, except BMW is known to underrate these figures. As an example, BMW rates the 340i at 326 at the crank, but it has been dyno'd stock 330+ at the wheels.
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Old 03-12-2018, 11:02 AM
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Quote:
Originally Posted by kyle_farias View Post
Mine does not have a split exhaust.
Exhaust into the turbocharger; not your tailpipe.
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Old 03-12-2018, 11:03 AM
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Originally Posted by argh View Post
On paper it is 180hp with the twin (scroll) turbo, except BMW is known to underrate these figures. As an example, BMW rates the 340i at 326 at the crank, but it has been dyno'd stock 330+ at the wheels.
The HP figures that BMW publish's are at the rear wheels, not at the crank.

328i
http://www.burgertuning.com/images/n...328i_dyno.jpeg

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http://www.burgertuning.com/images/b...tage1_dyno.jpg

340i
http://www.burgertuning.com/images/d...Jb_jb_plus.jpg
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Old 03-12-2018, 11:03 AM
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Quote:
Originally Posted by kyle_farias View Post
So I'm looking into my cars specs and realize that my BMW 320i only outputs 180 horsepower. Is the 180hp output with the twin turbo, or is it 180hp + twin turbo power? Reason why i am asking is because i also have a 2012 Jetta SE 2.5 that has an output of 170hp and when i compare the 2, the bmw is way more powerful, and i dont mean by a 10hp difference... How much more HP will me stock twin turbo add to my BMW's 180hp engine (If this is the case)?

Engine timing, ecu programming and gearing play a big part in how the car performs. The torque curve for your car probably shows lots of low end torque going to the wheels. And I understand the twin turbo is fairly efficient and spins up fairly quickly.
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Old 03-12-2018, 11:54 AM
N52 Moistenor N52 Moistenor is offline
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Engine timing, ecu programming and gearing play a big part in how the car performs. The torque curve for your car probably shows lots of low end torque going to the wheels. And I understand the twin turbo is fairly efficient and spins up fairly quickly.
the 320i is not twin turbo! it is a SINGLE twin scroll turbo. jesus christ, I swear we get members on this forum mistaking twin power for two turbos every single day.

HP means nothing out in the real world. Torque and good transmission gearing does and this is where BMW excels.
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Old 03-12-2018, 01:12 PM
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the 320i is not twin turbo! it is a SINGLE twin scroll turbo. jesus christ, I swear we get members on this forum mistaking twin power for two turbos every single day.

HP means nothing out in the real world. Torque and good transmission gearing does and this is where BMW excels.
You get people who post "I assumed the car had ______ [nav / HIDs / leather / back up cam/ etc etc] standard" without having checked. And you want them to know what type of turbo the car has?
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Old 03-12-2018, 01:15 PM
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Originally Posted by N52 Moistenor View Post
I swear we get members on this forum mistaking twin power for two turbos every single day.
Those members are not necessarily mistaken; BMW does offer "TwinPower Turbo" engines that have two turbos. The "TwinPower Turbo" moniker is very ambiguous, and is applied to engines that have one single-scroll turbo, one twin-scroll turbo, and multiple turbos.

Here's a summary I posted in another thread:

Quote:
Originally Posted by gkr778 View Post
"TwinPower Turbo" is a BMW AG marketing term. "Twin Turbo" usually refers to an engine with two turbochargers from any manufacturer. There are some BMW TwinPower Turbo engines that are Twin Turbo, and others that are not.

BMW claims a TwinPower Turbo powertrain consists of three elements:
  1. Variability
  2. Direct injection
  3. Turbocharging

For TwinPower Turbo gasoline (petrol) engines, these elements are implemented as follows:
  • Variability: Variable valve lift (Valvetronic), cam phasing variable valve timing on both camshafts (Double VANOS)
  • Direct injection: Gasoline direct injection with high pressure fuel pump
  • Turbocharging: various configurations including one single-scroll turbo (B38), one twin-scroll turbo (N16, N20, B48, N55, B58), or two single-scroll turbos (S55)

For TwinPower Turbo diesel engines:
  • Variability: Variable geometry configuration (VGT) used for turbos
  • Direct injection: Common rail diesel direct injection with high pressure fuel pump
  • Turbocharging: various configurations including one single-scroll turbo (B37, lower power variants of N47, B47, N57, B57), two single-scroll turbos (higher power variants of N47, B47, N57, B57), three single-scroll turbos (top level N57), or four (!) single-scroll turbos (top level B57)
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Old 03-12-2018, 02:46 PM
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Personally I would not get all exercised over it...the misconception, misuse, confusion is exactly what the marketeers want.
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Old 03-12-2018, 05:07 PM
tiseminger tiseminger is offline
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OP, I also have a 1.8L VW turbo rated at 170lb. While it is a blast, it takes a bit to spin it up for boost and the gearing is not optimized. So, the BMW drivetrain is much more "lively" and effective than the VW. Not surprised you are sensing a difference. Remember about the 320i, you likely get very good mpg AND a good responsive daily drive. Win-win.

Edit: just re-read your post. You have the NA 2.5L, so while I don't know the torque specs, you likely have less than the turbo 1.8L. Another reason your BMW 2.0 turbo will feel more performance oriented.

Last edited by tiseminger; 03-12-2018 at 05:09 PM.
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Old 03-12-2018, 07:48 PM
N52 Moistenor N52 Moistenor is offline
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Originally Posted by tiseminger View Post
OP, I also have a 1.8L VW turbo rated at 170lb. While it is a blast, it takes a bit to spin it up for boost and the gearing is not optimized. So, the BMW drivetrain is much more "lively" and effective than the VW. Not surprised you are sensing a difference. Remember about the 320i, you likely get very good mpg AND a good responsive daily drive. Win-win.

Edit: just re-read your post. You have the NA 2.5L, so while I don't know the torque specs, you likely have less than the turbo 1.8L. Another reason your BMW 2.0 turbo will feel more performance oriented.
How do you feel the gearing in your VW is not optimal? Try rolling onto the throttle and see how that Improves throttle response. Turbo engines prefer linear, progressive throttle application. Punching the throttle will always result in Lag.
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Old 03-13-2018, 06:53 AM
jparnes1 jparnes1 is offline
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Originally Posted by kyle_farias View Post
So I'm looking into my cars specs and realize that my BMW 320i only outputs 180 horsepower. Is the 180hp output with the twin turbo, or is it 180hp + twin turbo power? Reason why i am asking is because i also have a 2012 Jetta SE 2.5 that has an output of 170hp and when i compare the 2, the bmw is way more powerful, and i dont mean by a 10hp difference... How much more HP will me stock twin turbo add to my BMW's 180hp engine (If this is the case)?


A lot of people confuse hp with torque. Power off the line is all torque. Compare your torque spec with the Jetta.


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Old 03-13-2018, 08:34 AM
John MS John MS is offline
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Quote:
Originally Posted by N52 Moistenor View Post
the 320i is not twin turbo! it is a SINGLE twin scroll turbo. jesus christ, I swear we get members on this forum mistaking twin power for two turbos every single day.

HP means nothing out in the real world. Torque and good transmission gearing does and this is where BMW excels.
Next time you feel a fit of hyper-ventilation coming on over a minor issue please breathe into a brown bag until the tension passes.

BMW clearly describes their turbo as a Twin Power Turbo and most on this thread understand that it does not describe two separate turbo chargers. Nowhere in their advertising do they say two separate turbos are employed. Shorthand name is Twin Turbo. Whether the engine has two separate turbos or twin turbine wheels connected to a single compressor wheel is not nearly as important as results. And the results of a well designed engine, Twin (Power) Turbo, excellent 8 speed trans being married with well designed programming are nothing short of excellent. Lots of low end torque give smooth rapid acceleration as the o.p. mentioned.

Last edited by John MS; 03-13-2018 at 08:36 AM.
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Old 03-13-2018, 08:36 AM
JamesNoBrakes JamesNoBrakes is offline
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More importantly,compare your torque at 1700 rpm.
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Old 03-13-2018, 12:29 PM
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This thread is painful
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