Hello
I have a 2021 Charger R/T and currently my mods are AFE cold air intake with the silver bullet throttle body spacer and AFE 90mm throttle body and cat delete but still without any tune or nothing and got on the dyno 350 whp and 386 torque so can anyone tell me is those numbers good

 

Throttle body spacer? On a port fuel injected engine? You do understand that things does absolutely nothing, except lighten your wallet, right?

That said, the stock HP rating is 370, getting 350 to the rear wheels is actually quite good. Most folks figure a 25-30% driveline loss..... So, you are building some good power there.

 

LOL
So a TB spacer in front of a 90mm TB on a stock eagle 5.7........
1. That spacer is likely a restriction
2. Do you honestly think your stock 5.7 needs to pull as much air as a Hellcat? The 5.7 and 6.4 use the same size TB; do you think it even needs as much air as a 6.4.....?
3. 350 whp on a stock engine (370 crank hp) would be impressive but not likely or realistic; as good as the ZF trans is there would still be a bit more parasitic loss. Proof or it never happened; please post dyno sheet.