What should i expect?

[Arbee]

Hi Guys,

I will be going to the BMW Car Club Dyno day on Saturday and was just wondering what sort of wheel KW and NM should i expect?

Now, i know that difference dyno's will have different readings and all that jazz but what will be the average or what should i be expecting on the wheels?

On the fly, it should be 170kw and 300nm.
http://www.um.co.za/specifications/bmw_3...04).aspx

Car is a 2004 330i 6 Speed Manual. 110k km on clock. I have a decat and BMC (in the airbox) filter.

Thanks
Arbee

PS: I posted this up in the Engine Performance section a while ago and got no response so im posting it here again, hopefully to get some response.

 

[P1000]

Why the BMC filter? The only thing that goes quicker with that installed is engine wear. The decat will most likely give an improvement, but dynos seem to all have no real calibration and numbers vary so much between them. They are more of a way to measure relative power than absolute power, and thus are invaluable tools for tuning, but not so much for determining power output.

 

[Sankekur]

I would guess around 110-120kW at the wheels and torque around 200N.m

Why the BMC filter? The only thing that goes quicker with that installed is engine wear. The decat will most likely give an improvement, but dynos seem to all have no real calibration and numbers vary so much between them. They are more of a way to measure relative power than absolute power, and thus are invaluable tools for tuning, but not so much for determining power output.

I can't understand why there is no industry standard for calibrating dyno's (as there are with all other measuring equipment)

 

[biofreak]

If it were my car, I would hope for anything over 100wkw.

 

[Arbee]

Why the BMC filter? The only thing that goes quicker with that installed is engine wear. The decat will most likely give an improvement, but dynos seem to all have no real calibration and numbers vary so much between them. They are more of a way to measure relative power than absolute power, and thus are invaluable tools for tuning, but not so much for determining power output.

Really? I thought that this was the case with Cone Filters and not the in airbox filters?

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Sankekur - I guess i could live with that...

Biofreak - Seriously that low? Are you saying that that's what these cars make or RGM is a stingy dyno?

 

[P1000]

There was a link to a thread where they tested a lot of aftermarket filters and compared it to stock on an E46 (drop-ins, not cones). None made an improvement on a clean stock filter. You can also find tests on the internet where they compared how well these filters actually filter . None of them sufficiently filtered out the fine dust that actually kill your engine. Do you really think that if a significant improvement can be made to the output power for such a small investment, that not all OEM car manufacturers would do it? Instead none that I know of use any other filter than good old paper filters. Why? Because they actually filter. If you want performance, change it twice as often. Doing that the filter will pay for itself in fuel easily.

 

[Arbee]

There was a link to a thread where they tested a lot of aftermarket filters and compared it to stock on an E46 (drop-ins, not cones). None made an improvement on a clean stock filter. You can also find tests on the internet where they compared how well these filters actually filter . None of them sufficiently filtered out the fine dust that actually kill your engine. Do you really think that if a significant improvement can be made to the output power for such a small investment, that not all OEM car manufacturers would do it? Instead none that I know of use any other filter than good old paper filters. Why? Because they actually filter. If you want performance, change it twice as often. Doing that the filter will pay for itself in fuel easily.

Cool bud... Thanks for the info. I still have my stock filter, that will be back in before the dyno.

 

[msm]

There was a link to a thread where they tested a lot of aftermarket filters and compared it to stock on an E46 (drop-ins, not cones). None made an improvement on a clean stock filter. You can also find tests on the internet where they compared how well these filters actually filter . None of them sufficiently filtered out the fine dust that actually kill your engine. Do you really think that if a significant improvement can be made to the output power for such a small investment, that not all OEM car manufacturers would do it? Instead none that I know of use any other filter than good old paper filters. Why? Because they actually filter. If you want performance, change it twice as often. Doing that the filter will pay for itself in fuel easily.

+1

Also, certain brand name aftermarket filters have oils that mess up the MAF in BMW's. Can't recall details as I read it some time ago, but I'm sure a quick scan of the US forums should reveal some info.

 

[biofreak]

RGM is stingy... And the NA straight 6's don't make too much power up as it is. I think the E46 M3's last year all made in the 170-180 range with E46's coming in below 150's.

As said, only a guess

 

[speeddemon]

I got the same model with the same mileage as Mr Arbee and also with decat and with a K&N drop in flat filter and got 167kw at the fly on Zeemax's dyno.
Now before i replaced the original filter i hammered the car and then i put in the K&N filter and there was def a difference but wether it was the sound or performance i can't really say:dunno:
But like i said ...defenitely a difference.. just felt quicker
Also my Nm is 298Nm:thumbsup:
The before dyno showed 157kw and 278Nm

 

[netercol]

Also, certain brand name aftermarket filters have oils that mess up the MAF in BMW's. Can't recall details as I read it some time ago, but I'm sure a quick scan of the US forums should reveal some info.

all cotton gauze filters fall into this category, as they need to be oiled to filter, the oil gets onto the MAF sensor.. these are filters like K&N ect.

 

[Sankekur]

The reason why there is sometimes a performance increase when people go from OEM to after market is because the OEM filter is usually dirty when it is replaced. If you really want to improve the airflow just change the OEM filter every time you change the oil.

Also I see it like this if the filter is good enough for a beast of an engine like an S54 then is sure as hell is good enough for all the other e46's.

 

[P1000]

The reason why there is sometimes a performance increase when people go from OEM to after market is because the OEM filter is usually dirty when it is replaced. If you really want to improve the airflow just change the OEM filter every time you change the oil.

Also I see it like this if the filter is good enough for a beast of an engine like an S54 then is sure as hell is good enough for all the other e46's.

Are there people who do not change their filter with each oil service? Remember, a clean filter also means lower fuel consumption, especially at highway speeds.

 

[Sankekur]

The reason why there is sometimes a performance increase when people go from OEM to after market is because the OEM filter is usually dirty when it is replaced. If you really want to improve the airflow just change the OEM filter every time you change the oil.

Also I see it like this if the filter is good enough for a beast of an engine like an S54 then is sure as hell is good enough for all the other e46's.

Are there people who do not change their filter with each oil service? Remember, a clean filter also means lower fuel consumption, especially at highway speeds.

I was under the impression most people only change their air filter ever second service.
But in the end the moral of the story the stock filter is good enough

 

[Arbee]

The reason why there is sometimes a performance increase when people go from OEM to after market is because the OEM filter is usually dirty when it is replaced. If you really want to improve the airflow just change the OEM filter every time you change the oil.

Also I see it like this if the filter is good enough for a beast of an engine like an S54 then is sure as hell is good enough for all the other e46's.

Are there people who do not change their filter with each oil service? Remember, a clean filter also means lower fuel consumption, especially at highway speeds.

I was under the impression most people only change their air filter ever second service.
But in the end the moral of the story the stock filter is good enough

Actually, the moral of the story should be that i should be looking at 100wkw-150wkw on saturday and not that the filter im using is not healthy. But thanks for the info and thread hijack...

 

[Sankekur]

sorry for the hijack

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Back on topic
This is from RGM's site so you should probably get close to this.

 

[Arbee]

sorry for the hijack

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Back on topic
This is from RGM's site so you should probably get close to this.

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Thanks... Yoh, quite low but i guess OK for JHB. Hopefully, by the end of this year, Stage one will be done!

 

[netercol]

Actually, the moral of the story should be that i should be looking at 100wkw-150wkw on saturday and not that the filter im using is not healthy. But thanks for the info and thread hijack...

:spit:

good luck on saturday

 

[Iceman007]

The reason why there is sometimes a performance increase when people go from OEM to after market is because the OEM filter is usually dirty when it is replaced. If you really want to improve the airflow just change the OEM filter every time you change the oil.

Also I see it like this if the filter is good enough for a beast of an engine like an S54 then is sure as hell is good enough for all the other e46's.

Are there people who do not change their filter with each oil service? Remember, a clean filter also means lower fuel consumption, especially at highway speeds.

I was under the impression most people only change their air filter ever second service.
But in the end the moral of the story the stock filter is good enough

Actually, the moral of the story should be that i should be looking at 100wkw-150wkw on saturday and not that the filter im using is not healthy. But thanks for the info and thread hijack...

The performance filters actually cause more powerloss and Havoc than the OEM filter. stick to standard filter
http://www.bimmerforums.co.uk/forum/f37/bmw-e46-k-n-air-filter-t15448/

 

[Arbee]

Not bad, 136wkw... There where 3 330's, 2 f/l and one pre-f/l. Both the f/l (mine incl) made 136kw, the pre-f/l made 142wkw. Wierd?