BMW 335i Coupe Review

[RetardedBuddy]

Salman

Underrating power outputs for turbocharged engines might be done to take into account the quality of fuel. I remember chatting with a colleague of mine about tuning cars for the Russian market, and it's horrible over there. Fuel is bad, no maintenance, etc.. So they had to underrate their cars so that they could survive.

I have studied about tolerances so i got the previous post, but this one i don't understand...

[Bilaltq]

Sami bhai:
His lease ends this December and he'll probably be getting the M3 next!

BTW here's the video for that launch. Seek it to 0:20- the rest of it is all us waiting to get the traffic to clear.

//youtu.be/http://www.youtube.com/watch?v=ihYE4qBlhUM&rel=1

[sami_voodoo]

Salman

Underrating power outputs for turbocharged engines might be done to take into account the quality of fuel. I remember chatting with a colleague of mine about tuning cars for the Russian market, and it's horrible over there. Fuel is bad, no maintenance, etc.. So they had to underrate their cars so that they could survive.

I have studied about tolerances so i got the previous post, but this one i don't understand...

[/quote]

I wasn't clear enough. What I meant to say was that the manufacturers probably underrate their cars slightly to take into account the variation of fuel quality. This variation is much more noticeable in turbocharged cars than in NA cars. Then there is the question of atmospheric conditions, higher temperatures also cause turbo cars to lose power.

So, if someone goes on the dyno with their new car, they can't be "unhappy" with the manufacturers for misrepresentation. Also, these days, having so much BHP in a car is anti-social, so they might tone it down a bit. In any case, all you're concerned with is acceleration and speed. So if a car of 2 tons advertises 10 BHP, but does the 60 in 5 seconds and 155 mph on the limiter, who are we to argue right?

p.s. My comments are guesstimated hypotheses based on social norms and manufacturer's issues with marketing, so take them with a grain of salt if you wish...

[SLR]

The cars which use hand built engines have different power outputs.
That is why magazine times are quite different.
This problem is with the Nissan GT-R and other high-end cars which use hand built engines.
It includes AMG-Mercedes too

[RetardedBuddy]

Sami

(Y)

[SLR]

Sorry i forgot
Nice Review !!! (Y)(Y)

[salman_ksa]

Sami bhai, Those are the facts which I never denied. But, some cars are really underrated by their manufacturers. e.g, E55 was advertised as 470hp but every second E55 was dynoed at 500 or close to 500. GM is famous for underrating their engines, most notably is LS1 engine in the F-body cars. I can provide numerous dyno sheets for them. In these engines the formula of tolerance of the parts doesn't apply, IMO.

In modern FI engines, there always been a difference between SAE/DIN/JIN net horsepower and advertised horsepower.

Underrating power outputs for turbocharged engines might be done to take into account the quality of fuel. I remember chatting with a colleague of mine about tuning cars for the Russian market, and it's horrible over there. Fuel is bad, no maintenance, etc.. So they had to underrate their cars so that they could survive.

Indeed possible. Hence I said..

It's actually for their customer to save them from insurance and other purposes.

PS: Are you in touch with Kamran bhai? It's been a while since he posted here.

[sami_voodoo]

Sami bhai, Those are the facts which I never denied. But, some cars are really underrated by their manufacturers. e.g, E55 was advertised as 470hp but every second E55 was dynoed at 500 or close to 500. GM is famous for underrating their engines, most notably is LS1 engine in the F-body cars. I can provide numerous dyno sheets for them. In these engines the formula of tolerance of the parts doesn't apply, IMO.

When you say dynoed, on what dyno was it measured? Chassis or engine? The only reliable way to really measure power is on a crank dyno. And I do not think any owner would like to have his car stripped to measure actual horsepower. Can it be that the gas-guzzler tax got something to do with the advertised power outputs as for the "Skip-Shift" in the GM cars?

[ToofaneBatameezi]

It's a funny thing handbuilding, I visited Millat Tractors in 2003 or so and all the engines were handbuilt, yet no one was shouting about it, so was the case for all CG-125 engines

LOL....That should be more like..In your face Ferrari!!

When you say dynoed, on what dyno was it measured? Chassis or engine? The only reliable way to really measure power is on a crank dyno. And I do not think any owner would like to have his car stripped to measure actual horsepower. Can it be that the gas-guzzler tax got something to do with the advertised power outputs as for the "Skip-Shift" in the GM cars?

Then there are going to be 1 one more HP numbers as how much does it make on the crank!! But this doesnt matter a lot to Magazines or consumers...they want to know how much fast their car is from their neighbour bioth in numbers and on road!!

It's actually for their customer to save them from insurance and other purposes.

Maybe or maybe not!! Can also be done to evade possible attack by the 'Greener Earth' folks!!

[salman_ksa]

Yes, on Chassis at my friend's workshop.

Your above comment shows that you know nothing about Saudis. A Saudi would go crazy when he find out that his car is making more power than AbdulRahman Al-Zahrani bin Abdul Aziz bin...'s car.

Actually here people don't care much about how much power their cars are making. They just like to have more..

I don't think that it has anything to do with gas-guzzler tax. Since, all GM cars (not sure about ZR1) can succesfully avoide the gas-guzzling tax.

[RetardedBuddy]

Yeah i think you are spot on with thegreener earth folks

[salman_ksa]

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Maybe or maybe not!! Can also be done to evade possible attack by the 'Greener Earth' folks!!

Toffee, I said insurance AND other purposes.

[RetardedBuddy]

Salman
You're so right about the arabs, i remember this documentary in which some arab was showing his rides and said that he swapped the engine of an SLR into an SLK (or it was another Merc SL maybe) because its faster like that....

[Clubshaker_UK]

Nice video

[salman_ksa]

Salman You're so right about the arabs, i remember this documentary in which some arab was showing his rides and said that he swapped the engine of an SLR into an SLK (or it was another Merc SL maybe) because its faster like that....

Yeah it was an SLK. The same guy also own an E-Class with SLR motor. Even the rims are stock. Ultimate sleeper, I'd say.

[ToofaneBatameezi]

Slman: Indeed yes.. Accept my apologies!!

RB: Yes, I remember the dude is from UAE!! And has an white SLK which he raced with an ENZO and left the Enzo to race with the birds only!!

[salman_ksa]

Slman: Indeed yes.. Accept my apologies!!

Rejected.

[sunny234]

nice review.

[sami_voodoo]

Yes, on Chassis at my friend's workshop.

Your above comment shows that you know nothing about Saudis. A Saudi would go crazy when he find out that his car is making more power than AbdulRahman Al-Zahrani bin Abdul Aziz bin...'s car.

Actually here people don't care much about how much power their cars are making. They just like to have more..

I don't think that it has anything to do with gas-guzzler tax. Since, all GM cars (not sure about ZR1) can succesfully avoide the gas-guzzling tax.

LOL! If I could have a penny for each time I saw or heard someone say "1000 horse Civic", "1000 horse GTR", 1000 horse Supra" I'd be comfortably retired already. Manufacturers prove their point with blistering acceleration and top speeds. Then to keep the green party happy and other manufacturers guessing or to follow some other idiotic gentleman's agreement, they say their car makes a certain power figure - witness what happened when Lotus came up with the 360 BHP / 177 mph Carlton. Everyone was disturbed by the fact that a British company would have the cheek to launch a 4 door saloon that was within breating distance of 300 km/h. How many German hyper-saloons actually stop accelerating at 155mph? The FD2 Civic was dynoed by Litchfield motorsports and it came out producing 237 instead of 222 BHP. Sure, it's not a big increase, but would you buy an S2K if you knew a 4 door saloon produced the same figure? The marketing guys at Honda didn't think so.

I suppose we can have all the reasons under the sun why some manufacturers understate power figures and some overstate. I think what can be agreed upon is that there is always some marketing force that makes them do this.

[ToofaneBatameezi]

Yes, on Chassis at my friend's workshop.

Your above comment shows that you know nothing about Saudis. A Saudi would go crazy when he find out that his car is making more power than AbdulRahman Al-Zahrani bin Abdul Aziz bin...'s car.

Actually here people don't care much about how much power their cars are making. They just like to have more..

I don't think that it has anything to do with gas-guzzler tax. Since, all GM cars (not sure about ZR1) can succesfully avoide the gas-guzzling tax.

LOL! If I could have a penny for each time I saw or heard someone say "1000 horse Civic", "1000 horse GTR", 1000 horse Supra" I'd be comfortably retired already. Manufacturers prove their point with blistering acceleration and top speeds. Then to keep the green party happy and other manufacturers guessing or to follow some other idiotic gentleman's agreement, they say their car makes a certain power figure - witness what happened when Lotus came up with the 360 BHP / 177 mph Carlton. Everyone was disturbed by the fact that a British company would have the cheek to launch a 4 door saloon that was within breating distance of 300 km/h. How many German hyper-saloons actually stop accelerating at 155mph? The FD2 Civic was dynoed by Litchfield motorsports and it came out producing 237 instead of 222 BHP. Sure, it's not a big increase, but would you buy an S2K if you knew a 4 door saloon produced the same figure? The marketing guys at Honda didn't think so.

I suppose we can have all the reasons under the sun why some manufacturers understate power figures and some overstate. I think what can be agreed upon is that there is always some marketing force that makes them do this.

[/quote]

Agreed!! And the funny fact according to me is...They keep that above top-secret!!

I have yet to see someone from the press raise this matter to them!! Maybe they already undertsand the point Dr. Sami just made!! (Y)