Mustangworld 99 Cobra fix dyno graph

99 Cobra Fix Dyno Graph
Scan and info by Brian

Here is a dyno chart and info sent in by Brian that shows some numbers for the 99 Cobra fix (the Cobra HP related issues you've been reading about).

Done by Mike Dezotell at Pritchard High Performance in Rhode Island.

The 99 Cobra Fix consited of: Lower intake, catback and reflash of the EEC. Brian has K&N and trimmed air silencer.

Power before the fix = 259.3. Power after the fix = 274.6
Torque before = 276.3. Torque after = 285.9

Note: These are "Rear Wheel" dyno results and not "crank" or BHP results which would be higher (like most magazines use for publishing).

MW Note: Dyno graphs can vary from Mustang to Mustang based on other factors. The graph above does not represent exactly what will happen in all cases but is a general example of the HP increases that are being reported to us. Some are a little higher and some a little less.

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