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sr71bb · 03-03-2026, 05:14 PM

OK to recap what AMP indicated to me originally, they felt like their STAGE4 upgrades would result in about 750 to 800 RWHP all done. Today I brought my car BACK to them after around 600 breakiin miles. Lower PULLEY is ATI 15% Overdrive Pulley.

The graph shows the RESULTS of the DYNO. I had to take a picture of the DYNO screen because their printer was not working.

All runs were done on E85. I am using the STOCK LT4 injectors, DSX AUX fuel pump for the LOW SIDE.

The 783.24 HP run was made with 26 degrees timing, 2.3 upper pulley, with duty cycle on injectors around 90%, BOOST 14.9 PSI.

The 773.30 HP run was made with 26 degrees timing, 2.4 upper pulley, with duty cycle on injectors around 88 %, BOOST 14.2 PSI

The 770.71 HP run was made with 22.5 degrees timing, 2.4 pulley with duty cycle on injectors around 85%, BOOST 14.2 PSI

Conclusion ANY MORE power and we would need MORE fuel delivery.

I am VERY HAPPY with results

03-03-2026, 05:14 PM	#17
sr71bb Drives: 2019 Camaro Z-28 Join Date: Jul 2010 Location: Dallas Posts: 1,512	DYNO Day at AMP OK to recap what AMP indicated to me originally, they felt like their STAGE4 upgrades would result in about 750 to 800 RWHP all done. Today I brought my car BACK to them after around 600 breakiin miles. Lower PULLEY is ATI 15% Overdrive Pulley. The graph shows the RESULTS of the DYNO. I had to take a picture of the DYNO screen because their printer was not working. All runs were done on E85. I am using the STOCK LT4 injectors, DSX AUX fuel pump for the LOW SIDE. The 783.24 HP run was made with 26 degrees timing, 2.3 upper pulley, with duty cycle on injectors around 90%, BOOST 14.9 PSI. The 773.30 HP run was made with 26 degrees timing, 2.4 upper pulley, with duty cycle on injectors around 88 %, BOOST 14.2 PSI The 770.71 HP run was made with 22.5 degrees timing, 2.4 pulley with duty cycle on injectors around 85%, BOOST 14.2 PSI Conclusion ANY MORE power and we would need MORE fuel delivery. I am VERY HAPPY with results Attached Images __________________ __________________________________________ 2019 SS 1LE BIG NA A10 Eagles Canyon Raceway 2.7 CCW Below https://youtu.be/c9M5UHDftcA 4-15-23 at SCCA TT U1 Class MEGA Thread on THIS car: https://www.camaro6.com/forums/showthread.php?t=602092 Retired Cars BELOW: 1973 Camaro, 1969 Camaro, 1969 Camaro SS RS 2010 Camaro SS with 1000HP F1R, 2019 ZL1 1LE A10 Last edited by sr71bb; 03-03-2026 at 11:04 PM.