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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > How Much Hp does a 335i coupe really have?



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      11-13-2006, 09:41 PM   #1
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How Much Hp does a 335i coupe really have?

they say 300hp but i believe its more right??...
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      11-13-2006, 09:51 PM   #2
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according to most dynos that I have seen its more like >330 hp, most are putting down like 295 to the wheels
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      11-13-2006, 09:53 PM   #3
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Please keep the answers on-topic and serious. Sarcastic/non-helpful posts will be removed (I've seen the type of posts this topic produces).
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      11-13-2006, 10:06 PM   #4
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330hp

well i drove it couple days ago this car was really fast and did not feel like 300hp felt like more thank's...:rocks:
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      11-13-2006, 10:35 PM   #5
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I would tend to belive that the factory numbers are pretty spot on


some magazine dyno'd some number that would translate to more than 300 hp at the flywheel, but that was 1 time, 1 car.


don't buy the car because you think it has more HP than it actually does
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      11-13-2006, 10:43 PM   #6
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Quote:
Originally Posted by ward
some magazine dyno'd some number that would translate to more than 300 hp at the flywheel, but that was 1 time, 1 car.
1 time, 1 car? I think not... every dyno so far (i have seen at least 5) has showed whp numbers between 265 and 300 WHP... most of this can be atributed to difference in dynos, and conditions.

Whats funny is, that 90% of people that have spent any amount of real time in the 335i state that its underrated... and people that dont want to beleive it, havent really spent much time, and dont really have any valid arguments(like the post above, show some proof!)... but there has been so much proof of it being underrated...

Multiple dynos have been posted that show the car close within the same wheel horsepower results as an m3, shiv even said the cars were only 10WHP apart... so 285whp on an m3 = 333bhp...

if you do the math, saying the 335i is only 300bhp, and a conservitive dyno puts it at 275 WHP... that means bmw must have managed to make a driveline that has only ~6% loss???

Either way, the numbers dont lie... so you have 2 options...
1. BMW worked miracles and created a driveline to end all drivelines, that only has 6% power loss!!!
2. BMW decided to underrate the 335i engine as not to hurt current m3 sales.

I pick #2, and think it has between 320-330 bhp

Last edited by RiXst3r; 11-13-2006 at 11:02 PM..
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      11-13-2006, 10:47 PM   #7
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if that's true, then BMW had built a helluva engine.
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      11-13-2006, 10:53 PM   #8
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Quote:
Originally Posted by Chesmu
if that's true, then BMW had built a helluva engine.
Ya, its a great engine, but if you think about it, the e46 made 333 hp without the help of any turbos... and that was a 3.2 litre engine...

The 335i engine has 2 turbos, direct injection, and a few other tweaks, and is 3.0 litre... but yet, it makes very close to the same hp/litre as the N/A m3 engine? This is why the tuning potential of this engine is HUGE.
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      11-14-2006, 06:23 PM   #9
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there's been no effort spent to publish if there's any underratedness of the 328... i'm curious about that.
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      11-14-2006, 06:35 PM   #10
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I dont think anyone has made 300whp with car. I suspect the 300whp figure is in reference to the test automobile magazine did a couple of months ago. PLEASE note that this is during dynamic testing conditions (running up the gears). This is NOT a standard testing procedure. So please DO NOT qoute this. Their car, IIRC, put down around 280-285whp under NORMAL testing conditions. So PLEASE file this 300whp number in the folklore catagory.

Phew... ok i'm done.


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      11-14-2006, 07:27 PM   #11
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i dont know why everyone gets hung up on whether its a 330 hp engine with normal driveline loss or a 300 hp engine with low driveline loss or whatever. who cares. what matters is the power it puts to the ground. you feel wheel horsepower. whether its a 400 hp engine putting 300 whp down or a 305 hp engine putting 300 whp down it will perform the same. if i had to put money down though, i would say it is underrated. by how much? who knows
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      11-14-2006, 07:47 PM   #12
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Quote:
Originally Posted by kingbriani
i dont know why everyone gets hung up on whether its a 330 hp engine with normal driveline loss or a 300 hp engine with low driveline loss or whatever. who cares. what matters is the power it puts to the ground. you feel wheel horsepower. whether its a 400 hp engine putting 300 whp down or a 305 hp engine putting 300 whp down it will perform the same. if i had to put money down though, i would say it is underrated. by how much? who knows

I think you mean 280 whp...

Your right though... fact of the matter is, the 335i puts darn close numbers to the rear wheels as an e46 m3...
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      11-14-2006, 07:59 PM   #13
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Quote:
Originally Posted by RiXst3r
I think you mean 280 whp...

Your right though... fact of the matter is, the 335i puts darn close numbers to the rear wheels as an e46 m3...
actually i didnt. i know the dynos have been showing around 280 whp for the 335. i used 300 as an example because it was a good round number. my example had to do with cars in general but its all good.
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      11-14-2006, 09:14 PM   #14
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sorry bout the confusion shiv, mixed up the numbers a little. So 285 to the wheels.
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      11-14-2006, 09:20 PM   #15
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well even if the dynos reveal anywhere from 270+ thats like a 10% loss... which is still pretty damn good.
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      11-14-2006, 11:34 PM   #16
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300bhp is a conservative, but realistic estimate of what the 335i is capable of repeatedly producing.

makes no sense for bmw to underrate their cars. but much better to underrate than to overrate.

think of it this way: the 07 g35 has a claimed 306 bhp. the 335i has a claimed 300 bhp. which car is faster? the 335i. by a significant margin. this is due to alot of factors including weight, drivetrain efficiency etc.. but by "underrating" bmw basically rubs it in to lexus/infiniti. which is cool..
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      11-15-2006, 12:26 AM   #17
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It not all about BHP

OK the 335 produces less peak power than the e46M3.
BUT the peak torque is a lot more, and the torque corve is a lot fatter. Its the area under this curve which is important. The 335 has a final ratio of 3.08, and the M3 is 3.64. Put the same gears in both cars and the 335 will leave the M3 for dead. I think that BMW have just raised the performance bar on their sports coupe, the performance available from the compromised M sports coupe is available from a 'normal' type car which everyone will like. I cant wait to see what the new M3 will be like it will be an animal!
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      11-15-2006, 10:53 AM   #18
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Quote:
Originally Posted by kingbriani
i dont know why everyone gets hung up on whether its a 330 hp engine with normal driveline loss or a 300 hp engine with low driveline loss or whatever. who cares. what matters is the power it puts to the ground. you feel wheel horsepower. whether its a 400 hp engine putting 300 whp down or a 305 hp engine putting 300 whp down it will perform the same. if i had to put money down though, i would say it is underrated. by how much? who knows
Most people drive cars and have no idea how a 4 cycle engine works, others could identify every nut and bolt out of their car.

These people arent arguing, they are trying to determine the true performance of the engine and the car from the factory.
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      11-15-2006, 11:09 AM   #19
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until coming to this site i never realized how many different kinds of HP there were...
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      11-15-2006, 06:45 PM   #20
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So im seeing that general consensus is that this motor is underrated at is probably closer to 330 at the fly. I am pretty suprised at how strong this 6 is. Just coming out of a 05 gto that i put a 403 stroker in and put out 485/475 at the wheels, i cant wait to get into my 335i and try a few things out to see what kind of power this thing can put out.
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      11-17-2006, 01:57 PM   #21
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330-350 crank HP according to various dyno's and 4.8 seconds 0-60
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      11-18-2006, 02:46 PM   #22
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275-285 WHP range seems would be a corrected figure for 335i. Say with 16% drivetrain loss it (275 / .84) = 327 OR (285 / .84) = 339 HP. In fact, that is the same range stock E46 M3 have posted.

However, 335i has 40 ft. lbs TORQUE advantage "at the wheels" over M3. Still, despite that figure M3 runs same numbers with 335i (mag times).

335i extra weight and gearing make a difference
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