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03252012, 07:31 AM  #1 
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How to equal straightline speed vs. the C63
Just as the title says.
The major difference between the two cars in terms of performance seems to be straightline speed/acceleration. If thats the case why not mod to equal the playing field. Im wondering what type of mods will be needed to match the c63 in terms of statight line speed. A breakdown of mods needed and total labor costs would be appreciated. Ive tried searching but all im getting are subjective opinions between the two cars. Thanks in advance!
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03252012, 07:52 AM  #3 
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03252012, 08:01 AM  #5 
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NA route impossible?
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03252012, 08:09 AM  #7 
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So...say....intake headers exhaust pulleys tune isnt enough?
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03252012, 08:19 AM  #9 
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If I'm not mistaken, with catless/HFC xpipe, tune, pulley, filter/intake some have reported beating a c63 w/o the p31 package. To beat a c63 with the p31 you will need major mods such as a SC.
And here we go again.... 
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03252012, 08:21 AM  #10 
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probably not,
Intake +5 Headers +15 Exhaust +10 (max) Pulley + 2 Tune = makes all the above possible = +32 (probably the most you would get on all that) 414+32 = 446 crank...BUT your baseline torque is only 295 (no clue how much that would go up, probably only a little, maybe to 315) compared to the C63 in the 450 range, then factor in gearing, and even with the weight advantage, I don't think you could take a C63 w/o forced induction
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03252012, 09:07 AM  #14  
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03252012, 09:21 AM  #15  
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448hp 325tq 

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03252012, 09:26 AM  #16 
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03252012, 09:39 AM  #17 
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This figure was achieved by adding the mods expected gains. Dinan is very conservative with their gain estimates, so the numbers are pretty spot on. Other factor to consider is that all the m3 engines from the factory have varying actual hp/tq numbers not all will be 414/295. There is a variance of ~10% to 15%. A dyno test will be coming soon so we can determine the actual numbers of my ride.

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03252012, 09:45 AM  #18  
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03252012, 09:45 AM  #19 
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03252012, 09:50 AM  #21  
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