Video request: bone stock vs 3.91 diff - BMW M5 Forum and M6 Forums
E60 M5 and E61 M5 Touring Discussion 2005- Advertiser's Forum

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post #1 of 6 Old 10th December 2012, 06:06 AM Thread Starter
deebom3
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Video request: bone stock vs 3.91 diff

I searched but couldn't find any, anyone know of one? Preferably from a dig.
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post #2 of 6 Old 10th December 2012, 07:46 AM
Hasan Shaikh
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I am not sure if anyone would have done the 3.91 diff as the only mod or the first mod.
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post #3 of 6 Old 10th December 2012, 03:41 PM
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there was a comprission before between 3 cars

one with a pulley other with a tune and the third with a tune

i will try to find it for u

Evolve ALPHA N tune , ESS SMG software , Dinan intake with AFE scoops , RPI pulley , RPIcooler ,
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post #4 of 6 Old 10th December 2012, 03:42 PM
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here u are i hope this helps

Video: DFW M5 Challenge [Dinan 3.91 diff vs Active Autowerke ECU vs Evosport pulley]

Evolve ALPHA N tune , ESS SMG software , Dinan intake with AFE scoops , RPI pulley , RPIcooler ,
Agency Power headers , Hamann sec 1 with HFC , SS x pipe , Oem catback , sprint booster v2 ,
Trinity ( angel eyes - led interior - led license plate ) , reverse camera , TMS 12.5 spacers , Eibach lowering springs , Llumar 50% tint
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post #5 of 6 Old 10th December 2012, 06:14 PM
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Unfortunately, that video was inconclusive because we have come to learn from experience, that marginal pulls from M5 to M5 are mainly due shifting points of each driver.

Just by looking at that video, I can from my opinion, guess that all three cars were stock ECU!


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post #6 of 6 Old 10th December 2012, 07:54 PM
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Quote:
Originally Posted by deebom3 View Post
I searched but couldn't find any, anyone know of one? Preferably from a dig.
Dee-
No video but my 3.91 gear mod netted a 0.40 second faster 1/4 mile time (on a track, no inconsistent GPS) and plus 2 mph trap speed which in video terms is a six carlength margin in a 0 to 120 mph race. By the way when I say netted, I mean no other new mods and factoring in density altitude differences and even wind speeds and direction. Hope it gives you an idea.
Safe racing,
KenL

2010 BMW E60 M5 SMG Carbon Black/Black

Evolve Tubular Headers w/SwainTech ceramic coating
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RPI GTS Exhaust Sections 1,2 and 3
RPI Pulley
RPI Scoops
BMC Filters
RPI Oil Cooler
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