" Would the ITB manifold (not sure how to word that) have better throttle response? I always have an excuse for not supercharging my car, but LM and Sticky have both said that response goes down - I really need to drive one to see how much, but is that why they are doing this?

Excuse my ignorance - I just don't understand this "

" @Eric335 - I am thinking we should all pitch in a grand, and set it on fire as you said. How someone thinks that was a good idea/good use of time needs a lesson on humility.

I am sure the 19 trillion hits we would get on youtube would offset our cost. "

" http://cgi.ebay.com/ebaymotors/Holy-...ht_1235wt_1182 "

" Sounds glorious. I love the computer made / DCT downshifts on this car... The engine responds nasty fast. "

" I loved this video - love the S1000/HP4 - and love the Atom. Not much more else to like. "

" Right - I see what you mean... I thought you were saying that the lateral expansion was the sole/only resultant of the force vector - which isn't true... I gothca now. "

" Here's a good read if you want to learn more about it --> http://www.engdyn.com/images/uploads...aper_(kea).pdf

It's a bit of a boring read, but is detailed - and explains the tension and compressive pressures acting on the rod. I didn't really understand the lateral expansion - not sure if that's true - definitely some stretching and compression occurs. I guess it could expand outwards - but I think the main stress is acted longitudinally. Could be wrong - been a long time since the ridiculous amount of physics classes I had to take.

I am guessing that the amount of weight that is cut offsets the reduction in strength. I am guessing rods like that are magnafluxed, shotpeened, etc. - but who knows. They definitely look up to the task for those high RPMs though. Bad ass stuff. "

" Good point... Didn't even factor that in. Now you have me curious what those calculators are using to factor in "shift speed/time". I think it's doable based on the above - but don't have the experience you guys have on the straight tracks. I definitely beat the crap out of my car (I should refrain from saying this in case I sell it, but then again - hopefully the person realizes that's what they are for). "

" Although this is purely mathematics/physics/theory - but given the M3 weight of 3500 lbs, and a trap of 115 mph, the following ET is estimated with a 1.7s 60ft: 11.8s

Given 400 horsepower at the wheels (not sure how possible that is, but I would say it could be) and 3500 lbs we get 115.5 MPH and 11.78s

Given an ET of 11.99s and 3500 lb weight, we get a calculated WHP of 401.33

Three different 1/4 mile calculators (calculating power from ET/weight, ET from power and weight, and ET from a 60 foot and trap) - all within a few percentage point variance of what MIGHT be possible. I am not saying it is -but mathematically it looks like it would be if you had the conditions. I know people hate bench racing - but physics is what dictates results in my book.

I honestly am curious now. I need to get a test pipe - primary cats suck the power out of this car... "

" This is just my guess, who knows if it's accurate. I think at very high speeds, you aren't accelerating as hard (of course) as at lower speeds. In other words - at higher speeds, the impact of high mass doesn't have as much affect on acceleration as it would at lower speeds. The only other thing we have left (simplifying here) is wind resistance - which of course needs HP to get through. The power curve of the M5 is superior (making it's peak horsepower of 560 from 5750-7000 RPM) - and nearly no power loss between shifts from the DCT... I think that's the reason we are starting to see things like this, but hard to say for sure. This is one heavy car, and it's numbers so far haven't been too impressive.

Even after all that (above) - I still am not understanding how a stock Z06 that we know traps around 125 is losing (albeit not badly) to a car we have repeatedly seen trap MUCH less.

I like using this as a guide - and even here, it looks like the Z06 should have walked it everywhere. http://fastestlaps.com/cars/bmw_m5_f10.html ~ vs. ~ http://fastestlaps.com/cars/chevrolet_corvette_z06.html

Here are the power curves stock for stock (c6 vs f10):

Attachment 30633
Attachment 30634 "

" http://aschmann.net/AmEng/#SmallMapUnitedStates

Click on map to enlarge, click on region to hear samples... I can't believe someone took the effort to make this, however I think it's great they did. "