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post #31 of 56 Old 13th December 2001, 10:18 PM
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I have been known to set some really fast laps around Nûrburgring in a Europcar Golf with Optimax in the tank. As others have questioned my driving capabilities I would say it makes a big difference.

In the November(or was it October) issue of Car and Driver they dynoed a couple of cars with diffrent kinds of petrol and the Octane made a large difference in the amount of power produced. They tried to dyno the E46 M3 but unfortunatly it couldn't be done due to reasons described above but they did some testing by other methods. The issue is now burried in Mr Jannes magazine collections but I am sure he could find it if you want to have a look at it.

Regards/Robert



Quote:
Originally posted by johann

BTW, Nowacks N400 reaches 404hp on the crank shaft at well above 8000rpms using Shell Optimax. Does anyone know how they calculated the power loss and how much the extra octane adds?


Cheers,
/Johan

Last edited by luxobarge; 13th December 2001 at 10:21 PM.
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post #32 of 56 Old 13th December 2001, 10:56 PM Thread Starter
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Robert,

I already read that C&D article but since they didn't dyno the M3, the article is of little use.

Cheers,
/Johan

Last edited by johann; 13th December 2001 at 11:01 PM.
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post #33 of 56 Old 14th December 2001, 07:21 AM
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Impressive!

It's obvious that you have one of the good stock engines already. Haven't seen too many reports of 300+ RWHP. Extra 28 hp is almost 10%, you'll feel the difference. How about maximum torque?
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post #34 of 56 Old 14th December 2001, 04:56 PM Thread Starter
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Mil,

The max torque was at 404Nm and that was before race catalyzers and new exhaust. Now there is a power drop in that rpm region but we'll see next week what I end up with.

BTW, 404Nm is more than Nowack extracts even when running on Shell Optimax.

Cheers,
/Johan
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post #35 of 56 Old 19th December 2001, 02:36 AM Thread Starter
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talking

I am just about to leave for Kelleners to pick up my M3.

Kelleners managed to extract another 10hp so I totally got 38 extra hp on the rear wheels. This means that I got 348RWHP!

Max torque never reached 404Nm but is now 400Nm.

Using Ian's formula this would add up to 406,8 fly wheel hp!!!!!
The weight/power ratio is better than the 996 Turbo.

Hope I see someone on the way home so I can do

Cheers,
/Johan
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post #36 of 56 Old 19th December 2001, 02:38 AM
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post #37 of 56 Old 19th December 2001, 08:02 AM
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Whoa!

Have to admit that I've never been a big fan of tuning non-turbo engines. Especially ones with high hp/l ratio. But these results are starting to sound very promising. I'm about to change my mind...

I'm sure you are happy with your investment. Waiting eagerly for your impressions.


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post #38 of 56 Old 23rd December 2001, 04:16 PM
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Quote:
Originally posted by johann
I am just about to leave for Kelleners to pick up my M3.

Kelleners managed to extract another 10hp so I totally got 38 extra hp on the rear wheels. This means that I got 348RWHP!

Max torque never reached 404Nm but is now 400Nm.

Using Ian's formula this would add up to 406,8 fly wheel hp!!!!!
The weight/power ratio is better than the 996 Turbo.

Hope I see someone on the way home so I can do

Cheers,
/Johan
Hmmm, good for you.

However you won't kick my old Porsche 993Biturbo with 510bhp benched and 4WD

Still waiting for summer.
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post #39 of 56 Old 23rd December 2001, 04:29 PM Thread Starter
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Quote:
Originally posted by CiscoDude


Hmmm, good for you.

However you won't kick my old Porsche 993Biturbo with 510bhp benched and 4WD

Still waiting for summer.
Do you have 510bhp on the wheels?

Anyway, I don't think the M3 is faster than the 996 Turbo even though the weight/power ratio is better. The 996 Turbo's AWD will help it in the start and the lower Cw (0.29 for the 996 Turbo vs 0.32 on the M5) and stronger enigne will help it up in speed.
Still not bad for an M3 to almost keep upt with a 996 Turbo.

BTW, I got 352rwhp.

Cheers,
/Johan
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post #40 of 56 Old 23rd December 2001, 05:33 PM
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Johan,

Did you get her back already? If yes, how did it feel?

352 RWHP? Seems to me that every time you post a reply in this thread your M3 has more and more power.. Don't stop posting..
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