M3 E92 Engine Tuning (Noelle Motors) 476 BHp!!!

[Becksgold]

Hello Everyone,

Take a look at a new product I found at Noelle Motors in Germany : M3 E92 = 476 Bhp!!!

The curve is sooooo steep....

http://www.noellemotors.de/4_2l_engi...f5d2242.0.html

[gcae]

Those numbers are quite nice. I wonder how much powert they can squeeze out of that engine

[UltimateBMW]

So.. this was expected. I was not expecting such huge gains though. I hope they do reliability tests and post those up as well.

[Becksgold]

Looking at the website, the conversion looks pretty standard.. so reliability can't be too much of an issue...ECU + high flow sports cats..

[Epacy]

Anyone notice it looks like they increased the displacement? They state 4.2L and 4197ccm.
I figured one mention would be a typo, but two?

[UltimateBMW]

That is a good catch, and a bit interesting since they don't mention any other type of modification. Plus, I looked briefly around their site and didn't see any other e9x m3 mods what so ever.

Either they just got the facts wrong from the get-go or something is up here.

[UltimateBMW]

I just e-mailed them with a few questions. We will see what they have to say about it. I'll be sure to let you all know what they tell me.

[UltimateBMW]

So I got a reply back from the company.

Dear Chris,

Thank you for contacting Noelle Motors in Germany. I look after enquiries from international export clients.

To answer your question, our M3 conversion does not change the capacity of the engine, so I website should read 4,0 and not 4,2.

Secondly, regarding warrenty it depends on your local market. From experience, changing absolutely anything on you BMW vehicle can void your warrenty. So if you are worried about this, we advise to leave your vehicle standard..!!

Most of our clients of course ignore this and take the risk...

You will see that we offer a 335 flash, which is undetecable by your local dealer and cannot be overwritten by future BMW software updates...

So it looks like the 4.2L on the website was just an error.

[gfrnk69]

I doubt they already have a stroker kit for the e9x m3

[Not Ur Avg 3]

such simple mods n they got 476... o i cant wait for the big ones

[Big Windy]

booya! mods are risky though, i'm staying away.

[TTony]

Keep in mind that with such a high rpm range on the new M3, any increase in torque will give you a much higher corresponding increase in hp. This engine should also respond very well to FI.

[Becksgold]

Originally Posted by redmtclimber

booya! mods are risky though, i'm staying away.

No Risk is no fun...

[OzStriker]

Originally Posted by TTony

Keep in mind that with such a high rpm range on the new M3, any increase in torque will give you a much higher corresponding increase in hp. This engine should also respond very well to FI.

But this engine has a compression ratio of 13:1.

FI will involve major work!

[swamp2]

Originally Posted by OzStriker

But this engine has a compression ratio of 13:1.

FI will involve major work!

Not true on multiple accounts. The compression ratio is 12:1, which granted is quite high. However, the RS4 has been successfully SC-ed, and it is running 12.5:1.

[footie]

Originally Posted by swamp2

Not true on multiple accounts. The compression ratio is 12:1, which granted is quite high. However, the RS4 has been successfully SC-ed, and it is running 12.5:1.

I understood that the MTM supercharged RS4 had it's CR reduced, was this not the case?

I think a good indicator of what is achievable as far as compression ratios and FI you should look at the Audi S6 and RS6 engine. In the S6 it's CR is 12.5:1 but with the RS6 it drops to 10.5:1, I would reckon much over this would cause problems long term and in any case you will have to lose that almighty rev range into the bargain.

I am still a little doubtful over the claimed improvements that have been achieved from such small alterations.

[Becksgold]

Originally Posted by footie

I understood that the MTM supercharged RS4 had it's CR reduced, was this not the case?

I think a good indicator of what is achievable as far as compression ratios and FI you should look at the Audi S6 and RS6 engine. In the S6 it's CR is 12.5:1 but with the RS6 it drops to 10.5:1, I would reckon much over this would cause problems long term and in any case you will have to lose that almighty rev range into the bargain.

I am still a little doubtful over the claimed improvements that have been achieved from such small alterations.

If you can't believe a longstanding BMW engineer (Karl-Otto Noelle) based in the same tiny Bavarian village as Alpina, who can you trust?

[swamp2]

Originally Posted by footie

I understood that the MTM supercharged RS4 had it's CR reduced, was this not the case?

I think a good indicator of what is achievable as far as compression ratios and FI you should look at the Audi S6 and RS6 engine. In the S6 it's CR is 12.5:1 but with the RS6 it drops to 10.5:1, I would reckon much over this would cause problems long term and in any case you will have to lose that almighty rev range into the bargain.

Incorrect.

Quote from here:

The centerpiece of the MTM RS4 Clubsport package is the liquid-to-air intercooled, Lysolm-type, belt driven supercharger that resides directly underneath the carbon fiber bulge on the hood and feeds the car with 0.45 bar (6.5 psi) of fresh air. This cleverly designed package sits smack dab between the cylinder heads within the “V” of Audi’s 4.2 liter V8 and boosts power levels to a very impressive 535 horsepower and 428 ft-lbs of torque. The engine internals and compression ratio remains 100% stock.

Similar corroboration is available elsewhere on line.

[footie]

Maybe Superchargers don't require a down in compression like is always the case with Turbochargers.

I must say I looked for evidence to say different but all the engines I can find which have been both N/A and Turbocharged seem to have their compression dropped by on average 1.5~2:1.

[eclipsisNA]

I'm surprised this subject hasn't received more talk. 476 is a damn nice # for such a simple-sounding upgrade.

[Becksgold]

What interested me personally about this conversion is how "Safe" and "respectable" it is..

Lots of people dream on this forum dream about "Supercharger this" and "Stroker kit that... " But they see no reliability or run a mile when it comes to paying the check..

[phoenixbmwlife]

I'm thinking about my warranty and I wonder if this will void it here in the US.