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Apr 3, 2007 | 12:54 PM

#16

heavychevy

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Quote:

Originally Posted by chrisn

Is this post 1000-mile power increase real or placebo? I mean I wonder if it is the car "breaking in" or the driver getting more in tune with the car.

I'm curious if anyone has any objective performance date on this.

It's real and pretty much consistent for all makes and models of cars, cars run stronger after the break in period, but I don think anyone has determined if there are other components involved like drivetrain clutch which are being broke in for the first time whereas many sports car manufacturers break the motors in prior to selling.

Apr 3, 2007 | 04:26 PM

#17

PorschePhd

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Quote:

Originally Posted by Aisxos

can now you show us a power curve between the good stock and a modified ECU by you plz?! (with headers and Exhaust?!)
These big differences still happen and in modified cars?! Or only on stock?!

Here is the exhaust and ECU together.

Apr 3, 2007 | 05:53 PM

#18

cannga

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Stephen,
Thanks for sharing your (considerable) knowledge.
Am I reading this and the other curve that you posted correctly: The hp and torque for ECU plus exhaust are actually LESS than or similar to ECU alone at 3000 and 4000 rpm, and below 2000 rpm, actually less than stock?

Quote:

Originally Posted by PorschePhd

Here is the exhaust and ECU together.

Last edited by cannga; Apr 3, 2007 at 05:56 PM.

Apr 3, 2007 | 06:30 PM

#19

PorschePhd

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No, that is actually just the way the throttle is stabed on the dyno. One I was rolling through the gear and the other I held steady. Sorry about that.