This test was performed on the CJM Dyno by Ryan (rm2932) and Dave (mister2ownzU).

For the testing on 272 Intake and 264 Exhaust they tried it at HKS degree specs and then I108 and E112 lobe centerline.

After the test results, Ryan kept with the standard HKS 264/264 combo.

About the wavyness in the graphs... that was a problem with the Profec B, you could watch the psi fluttering up and down 1 psi and hear it in the wastegate dump. 

If you download the files you can view the logged A/F and see that it was very consistent after a few runs of tuning each combo.

Engine Specs:

• CJM 2.2 liter stroker (8.4:1 compression)
• CJM ported head w/
• Ferrea 1mm over valves
• Ferrea dual springs
• Ferrea retainers
• Jun valve guides
• Greddy T67 turbo kit with 10cm exhaust housing
• Custom intake manifold
• Ford racing 70 mm Throttle body
• XS engineering Skyline core IC 24 X 10.5 X 3
• Hux racing fuel rail
• Precision 95 lb/hr injectors
• Electromotive TECII

Download .RAR of all dyno files -- Click Here

Stock 15psi

Stock 15 vs 20psi

HKS 264/264 15psi

HKS 264/264 15 vs 20 psi

264/264 vs 264/272 @ HKS Degree Spec @ 20psi

264/264 vs 272/264 @ HKS Degree Spec @ 20psi

272/264 @ 20 psi @ HKS Degree vs I108/E112

264/264 HKS Degree vs 272/264 I108/E112 @ 20 psi

272/272 Low Lift @ 15psi

272/272 Low Lift @ 15 vs 20 psi

272/272 Low Lift VS 264/264 Low Lift @ 20psi

272/272 High Lift vs 272/272 Low Lift @ 20psi

Toda 280/280 @ 15psi

Toda 280/280 at 15 vs 20psi