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Unread 02-20-2007, 08:29 AM   #9
miami993c297
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Hello all,

An update from today for some of you that are asking about my future time at the drag strip.
As I am not going to race the car immediately here is the following:

As some members are asking me through PM questions on the shape of the power and torque curve of my engine, I am posting below an overlay from the day where I left the car to J&J (11/17/06) and the day where I had my car back (12/27/06).

The general consensus was that there was a probability to lose power down low, in the 3000 rpm to 4000 rpm range...and I was convinced that going to a bigger camshaft and increasing the overlap could only lead to that.
I was lucky with my combo, NO LOSS down low, matching in the zone and some little plus in term of power on the dyno.
The accelerations time are EXACTLY the same on the road between 3000 rpm and 4000 rpm !!! (always monitered the same way of my usual process that most of you are aware of through HP Tuner)

The gain in power are after 4200 rpm but the HUGE GAIN in accelerations is between 4600 rpm and 7100 rpm, ~2 seconds on ~11 seconds....

EXACT ACCELERATION TIME 4 GEAR 100 mph to 153 mph 4600 rpm/7000 rpm:

11-16-06 SD 86 10.55am------:-----11.52sc
02-17-07 SD ETP 15 11.05am--:------9.57sc


May be those acceleration numbers are telling something to the specialist here around.
That is the process used by all the newspapers and racing journalist in Europe to compare the power car to car, no traction or grip parameters induce in the game.



Christian
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418Ci TEC Assembled/ ETP-FTI Prep/ FTI "Barbara Streisand" Cam 664 HP Pump Gas.
Accepting imperfection signify losing the race against yourself…

Last edited by miami993c297; 02-21-2007 at 07:52 AM.
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