I did a fresh morning baseline with the Spectre intake + Corsa exhaust.
60′ time was 2.3 sec, so still not good. Unfortunately my pre-corsa cold air pre-run earlier in the week — also a 4.8s but 4.8s/5.12s — there was no usable Performancebox data file to compare the details from (tech glitch).
Distance() Time(s) @Speed(mph)
0-60′ 02.3 32.8
I did disconnect the battery yesterday to speed up relearn, but the transmission is still hitting the rev limiter before shifting on some runs. Over time I suspect it will adjust, although it may need to be tuned to shift sooner.
My prediction is that the Corsa frees up 12-20 hp but I’ll have to get a better test run to prove that. Today’s raw data is no improvement over the 4.8/4.9s posted prior to the new exhaust.
Compared to running hot in August pre-Corsa:
The difference appears to be from 50-60 mph.
Max calculated power based on torque delivered for the morning caused traction control to come on at the shift — an unusable run because I had not switched it off —
Here are my IATs for trending:
|Corsa Cold Baseline Mar 25 2012 2nd Run|
|Down Delta||MPH||(Temps in Deg Fahrenheit)|
|Item||0||30||45||60||Across Run||Heat Add|
I plan to start recording Richard’s correction calculator for runs so I have that info. Today was about perfect for a correction factor near ‘1’. I am using the air temp from IAT1 for the adjustment; Richard suggests use the actual air into the engine, which is IAT1.
Conditions: Cold run, 3/4 fuel; Weather for this run:
Note: The relative horsepower calculations are made in accordance with SAE J1349. The standard reference conditions for SAE J1349 are: Air temp 77 deg F (25 deg C), 29.235 Inches- Hg (990 mb) actual pressure and 0% relative humidity.