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Do these numbers seem low?

PCM Diagnostics & Tuning - LS1TECH - ls1tech.com
So my Trans Am got retuned today on a dyno jet for the first time and it made 376hp and 371tq. The set up in the car is a LS1 with a LS6 intake, mild cam (218/227 .600/.600 life), TSP stage 2.5 862 heads, 36# injectors, harden pushrods, Delphi lifters, LS2 lifter trays, 1 3/4 long tubes with a off road y pipe. It?s an auto car with 125k miles. These numbers seem pretty low I was expecting 410hp. Bright side is it from the previous tune is baselined at 323 and went all the way up to 376. I know dyno numbers aren?t anything but these seem low and I thought dyno jets where more accurate.


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