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05-13-2008, 04:36 AM | #1 |
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C63 with RennTech ECU
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05-13-2008, 11:59 AM | #3 |
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05-13-2008, 09:55 PM | #4 |
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05-13-2008, 10:36 PM | #5 |
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HOLY COW! 100 HP from just a retune? WOW!!!! Well, we all knew this car was detuned coming out of the factory - but I didn't think that there was another 100 HP left in there. How'd they do it? Obviously more gas, but how do you put more air into a NA engine?
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05-13-2008, 11:10 PM | #6 |
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Come on....85 whp from a flash? please....
edit: yeah, something looks fishy with the stock whp figure....looks WAY low to me too.
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05-14-2008, 01:22 AM | #7 |
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According to my butt dyno (and it's a big one ) the C63 is FAST!!!
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2009 135i 6MT Euro Delivery 9/5/09
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05-14-2008, 05:32 AM | #9 |
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05-14-2008, 07:55 AM | #10 | |
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Did I get that wrong? Bruce |
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05-20-2008, 11:58 PM | #12 |
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Spoke to RennTech today about ECU for C63
When I spoke to RennTech this afternoon, they said the ECU Upgrade is only good for 26-28 HP at a cost of $3,465. I don't know about you, but I have to ask myself whether a 5.76% increase in HP when you are already starting with 451 is even perceptible. Does not sound like it is worth $3,465 to me. Just my humble opinion.
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05-21-2008, 12:09 AM | #13 | |
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It is already a beast. Not to mention warranty issues. |
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05-22-2008, 12:32 AM | #14 | |
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VRP is just down the street from me and they are looking for a "test" car... I think I will let someone else go first.....
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2009 135i 6MT Euro Delivery 9/5/09
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05-22-2008, 12:38 AM | #15 |
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05-22-2008, 12:43 AM | #16 | |
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2009 135i 6MT Euro Delivery 9/5/09
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05-22-2008, 11:30 AM | #17 |
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The most powerful 6.2L AMG motor is 518HP is some other models..... I wonder if the cams are different in the C63 or everything is related to tuning and more restrictive intake-exhaust plumbing?
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05-22-2008, 10:10 PM | #18 |
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Good Question!
Wondering that myself! I understand the crazy logic that the lower model in the hierarchy should not have more power than the flagship, but come on, does a 40s-50s year old dude care if a 20s-30s kid drives a car with the same horsepower. They should all be 518hp providing the intake and exhaust manifold flow optimally, but artificially limiting the hp via the software is kind of paranoid, don't you think?
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05-26-2008, 02:25 PM | #19 |
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I know for a fact that the exhaust and headers on the C63 are more restrictive than on other “higher up” models, I suspect the intake may be rather restricted as well and camos (though I donīt think so) may be different as well. In any event, I donīt think you can get an additional 100 hp from just an ECU reflash on that engine. Sounds way fishy, but then again, I have spoken to a Renntech technician (albeit only one but still from Renntech in Florida) that said some things that sounded way exaggerated to me.
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