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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Renntech tune for 535i?
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      12-22-2011, 12:26 AM   #1
mercury
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Renntech tune for 535i?

Just saw this today. New tune for our cars?

http://www.renntechmercedes.com/www/node/687
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      12-22-2011, 02:25 AM   #2
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I just saw that myself, I emailed their sales contact to see if there's any news about the release of this product.
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      12-22-2011, 11:58 AM   #3
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Will be interested to see pricing!
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      12-23-2011, 10:18 PM   #4
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Was quoted 1795 plus instal/shipping ecu.

What's up with the difference of 265 hp listed by renntech and 300 hp by BMW. Is that the whole measuring at the wheels difference?
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      12-24-2011, 12:30 AM   #5
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Originally Posted by rmastale View Post

What's up with the difference of 265 hp listed by renntech and 300 hp by BMW. Is that the whole measuring at the wheels difference?
Site says "Performance numbers measured at the wheels"
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      12-24-2011, 10:26 AM   #6
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Quote:
Originally Posted by Suthrn View Post
Quote:
Originally Posted by rmastale View Post

What's up with the difference of 265 hp listed by renntech and 300 hp by BMW. Is that the whole measuring at the wheels difference?
Site says "Performance numbers measured at the wheels"
Right; I guess my question is why do they have a variance? Is it just as simple as BMW would rather say 300? Does the 300 mean just the engine as a stand alone? Seems like a big loss of horse power no?
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      12-24-2011, 01:33 PM   #7
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If you go by the by the wheels numbers and factor in 20% driveline loss the at the crank # (what is reported by BMW) is closer to 307.

At $1795 plus shopping ecu back forth why would anyone choose this over Dinan?
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      12-26-2011, 08:41 PM   #8
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Quote:
Originally Posted by lakerholic View Post
If you go by the by the wheels numbers and factor in 20% driveline loss the at the crank # (what is reported by BMW) is closer to 307.

At $1795 plus shopping ecu back forth why would anyone choose this over Dinan?
Good point if Dinan had a product available for the 535i
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      12-26-2011, 08:58 PM   #9
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Quote:
Originally Posted by canuckinjapan View Post
Quote:
Originally Posted by lakerholic View Post
If you go by the by the wheels numbers and factor in 20% driveline loss the at the crank # (what is reported by BMW) is closer to 307.

At $1795 plus shopping ecu back forth why would anyone choose this over Dinan?
Good point if Dinan had a product available for the 535i
I thought one is imminently available? Some other members have confirmed this through their dealers. But it's hit and miss right now I guess.
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      12-26-2011, 08:59 PM   #10
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Quote:
Originally Posted by canuckinjapan View Post
Quote:
Originally Posted by lakerholic View Post
If you go by the by the wheels numbers and factor in 20% driveline loss the at the crank # (what is reported by BMW) is closer to 307.

At $1795 plus shopping ecu back forth why would anyone choose this over Dinan?
Good point if Dinan had a product available for the 535i
I thought one is imminently available? Some other members have confirmed this through their dealers. But it's hit and miss right now I guess.
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      12-27-2011, 01:18 AM   #11
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I am in Germany so neither are accessible by me, however, my point of view is I would rather spend more for a company with a solid reputation that backs up its product. I dont know what renntech, are they Mercedes focused? Do they offer a warranty?

I take the price of my F10 seriously, I would not but a ECU modification unless the company had a background in BMW modifications and offered a complete stand alone warranty.
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      01-09-2012, 03:48 PM   #12
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Renntech Tune

I just called Renntech today an found info on ecu flash on my 2011 535i. As per the engineer here are the following gains on a stock car.

Gains:
100HP more at crank
64HP to the wheels
56 pounds of TQ

Price is $1695 and 10% off if done by Jan15th...
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      02-01-2012, 07:41 PM   #13
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Pricing has gone down, gains are now advertised as 70hp to the wheels... I'm thinking about doing this.

But I am looking at this versus Burger (more hp with Renntech, ECU, undetectable by BMW when you take it into service, lifetime reflash, 24mo warranty, etc.)...

Anyone take the plunge, or am I going to be the first?!?! :-)
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      02-01-2012, 07:53 PM   #14
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Best gains from any tune to date, right? I'm game to jump in with ya!
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      02-03-2012, 11:28 AM   #15
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Argh. I'm now leaning more toward Burger. Cheaper, 40hp vs. 70hp, easy to remove, don't have to worry about ecu reflashes if there are ecu updates at dealer. And, like it or not, Burger has a track record with tunes for BMWs versus Renntech...
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