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NA18CamaroSS · 06-17-2025, 07:50 PM

Quick question for experienced tuners: Have you seen less than advertised retard with phase limiters?
I am logging 2.5 degrees of max retard with my BTR 4 degree phase limiter. Noticed this when I was going over my full throttle logs. I did a little experiment and set all of the cam tables to 5 degrees at idle and slightly above. Data logged intake cam angle, intake cam angle command, and intake cam error. Sure enough, the PCM was commanding 5 degrees, but I was only getting 2.5, showing a 2.5 degree error.
I can live with it, but it's a little disappointing.

06-17-2025, 07:50 PM	#1
NA18CamaroSS Drives: 2018 Chevrolet Camaro 2SS 1LE 6M Join Date: Jul 2019 Location: California Posts: 297 View My Garage	BTR 4 Degree phase limiter. Quick question for experienced tuners: Have you seen less than advertised retard with phase limiters? I am logging 2.5 degrees of max retard with my BTR 4 degree phase limiter. Noticed this when I was going over my full throttle logs. I did a little experiment and set all of the cam tables to 5 degrees at idle and slightly above. Data logged intake cam angle, intake cam angle command, and intake cam error. Sure enough, the PCM was commanding 5 degrees, but I was only getting 2.5, showing a 2.5 degree error. I can live with it, but it's a little disappointing. __________________ Bolt-ons.