10/02/2026 3:35 pm
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I recently picked up a 2021 Scat Pack and I'm absolutely loving that 6.4L Hemi power, but I’m ready to start tweaking it for better performance. I’m mainly looking for mods that improve throttle response and traction without going full forced induction just yet. I’ve been looking into wider tires like some 305 Nittos because the stock ones just spin, and maybe a Tazer for those extra track modes. I'm also curious if a mid-muffler delete or a specific cold air intake actually helps with the 392's airflow. For those who’ve tuned yours, what are the first three mods you’d recommend for a street-driven Scat to really wake it up?
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10/02/2026 4:13 pm
In my experience, I wasted money on a Mopar Cold Air Intake 77070043AC that unfortunately just sucked in hot engine air and did nothing for performance. If your looking to wake it up, I'd get some Nitto NT555 G2 305/35R20 tires because the 392 torque just shreds those stock ones. ur gonna want a Z Automotive Tazer Challenger Scat Pack to unlock Track Mode and ur throttle mapping. Also, look into a Per4Mance Development P4D Differential Brace to prevent wheel hop. I learned the hard way that traction is literally everything; I almost snapped an axle because I didnt have that brace. Ngl, mid-muffler deletes are just for noise... focus on the grip and keeping the diff stable. Hope that helps, gl!
11
10/02/2026 4:40 pm
Respectfully, I'd suggest a different approach. Skip pricey CAIs; grab the Hellcat Lower Airbox 68175164AC. For traction, Mickey Thompson ET Street S/S 305/35R20 is better value than Nittos if you want real grip tbh.
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10/02/2026 3:36 pm
In my experience, the stock tires are literally trash. i'd suggest focusing on these first:
- just get some Nitto tires for better grip
- a device from Z Automotive for those track modes
- maybe a Mopar intake?
i think it helps the airflow a bit, but be careful with heat soak tho... i mean it mostly just adds some noise lol. gl!
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29/03/2026 11:51 am
Interested in this too
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10/02/2026 4:40 pm
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