Quote:
Originally Posted by Denny McLain
Fresh from dyno.
Three baseline runs were done to find the sweat spot for testing temp and a 4th run done removing the air filters to see the effects. All runs are SAE corrected utilizing a dynojet dyno.
The first run was with an oil temp of 180 (usually do water temp, but being none are available) which yielded 277/231 torque. After five minutes a second pull was done with an oil temp just under 200 degrees which yielded the best run of the three of 275/240. (fyi 282/246 std) Even though peak is slightly less, the overall power was significantly more. A third run was done with an oil temp of 220 with power going down to 273/236 indicating the car likes oil temps just under 200 degrees. Really wish I could do better water temp readings as this is usually what I go by in establishing a baseline for consistency.
The car was allowed to cool down to 195 oil temps (best run temp), the air filters removed and redynoed. The results were 274/239 which tells me I may have pissed away 90 bucks buying the Corsworth high flow filters making me even more skeptical of an 18 hp gain in just intake.
Air/fuel ratio are pretty rich for a N/A setup mostly in the mid to high 11 to 1 range which tells me one of two things: These care either like it rich, or the factory is sandbagging. Tuning software should answer that question.
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Also for poops n grins we pulled dyno sheet up of a 350Z. No offense to the 350 people, woe....glad I bought a 370.
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This does lend itself to the theory that the gains from the aftermarket intakes may be solely due to the change in tune. If that's the case, as simple 93 specific reflash may be all we need on the intake side (for those of us fortunate enough to live in a 93 octane state).