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Old 02-22-2013, 01:58 PM   #338
Scooby Newbie
Member#: 247604
Join Date: May 2010
Chapter/Region: NWIC
Location: Hillsboro, OR
1974 Porsche 914
1700lb AX Car w/ Spec-C


Took the car down to Cobb Tuning Surgeline for Dr. Tim Bailey to work his magic on tuning the car for the new injectors and more boost. Overall the session went great with the engine running well and no major issues.

Here is the car strapped down to the dyno.

I had to take off the driver side rear fender in order to get an A/F meter on the exhaust which exits out under the car.

At higher power levels we were dealing with significant rear wheel spin. We ended up with 3 jugs of water in the rear truck to put weight over the rear wheels.

Here are the final dyno plots. At 18psi, we are making 335whp and 305ft-lbs. This is on a Mustang Dyno which notoriously measures low. Either way, the hp is fairly linear all the way up, we reach full boost pretty quickly, and the torque curve is nice and flat where we want it.

I am working on video and will post it soon.

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Britain is offline   Reply With Quote