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· DRIVESRT.COM
Challenger SRT Hellcat
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Challenger SRT Hellcat
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You won't gain any power by just letting more air in. The ecu will adjust the engine to account for the additional leaness caused by more air flow and power will not increase. However, if you added both a hi flow exhaust to let more air out and the legmaker, you might get 10-20 hp more, but it would cost you almost $2K
 

· DRIVESRT.COM
Challenger SRT Hellcat
Joined
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5,269 Posts
You won't gain any power by just letting more air in. The ecu will adjust the engine to account for the additional leaness caused by more air flow and power will not increase. However, if you added both a hi flow exhaust to let more air out and the legmaker, you might get 10-20 hp more, but it would cost you almost $2K
For Hellcats and Redeyes, less restriction on the intake side will free up some HP. On the 2019+ Hellcat/Redeyes, there are some aftermarket intake designs that have less restriction than the OEM. Hellcat/Redeye/Demon Air Intake Designs

Specifically for 2015-2018 Hellcats, the OEM closed box design vs. an aftermarket open-element like the Legmaker Intake resulted in a 3mph gain in the 1/2mi. We saw similar results in our 1-mile testing as well.
 

· Premium Member
2018 Challenger SRT Hellcat Widebody
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486 Posts
Yeah, BUT, on the pre19's, the OEM box actually worked better at keeping air temps lower, most experienced the dreaded timing pull because temps ran up to 150 pretty easily with heat from engine bay soaking the air supply.
 

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2015 Charger SRT Hellcat
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4,065 Posts
Unless your car is down on power, from the factory, I wouldn't mess with it. I'd spend the money a dyno runs and see where it's at. Doesn't EVERY aftermarket part make power?????????? :)
 

· DRIVESRT.COM
Challenger SRT Hellcat
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5,269 Posts
Yeah, BUT, on the pre19's, the OEM box actually worked better at keeping air temps lower, most experienced the dreaded timing pull because temps ran up to 150 pretty easily with heat from engine bay soaking the air supply.
Pre-19 OEM air boxes did do better at air temperature management in bracket-style and back-to-back 1/4mi racing.
 

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