Dynamometer Results & Comparisons - 2002 slp 35th anniversery

Hello,
i recently changed the gear in my car to a 410 ratio car has 6speed they tuned it at rpm in Gardner NC. It put 315 hp tp back tires car is making @375 hp at engine my car made more hp before i changed the gear rpm said that because i had 410 gears that killed the hp is this true or do i need to have it retuned i don't see that hurting rwhp thanks

They are correct. Going from stock 3:42s to 4:10s would show roughly 5-10rwhp loss on the dyno. No tuning is required. Just have them recalibrate the pcm for the 4:10 gears so your speedometer reads correctly and maybe bump the rev limiter up to 6500.