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Discussion Starter · #1 ·
I have been looking at the K&N but also saw an AFE stage 1. I have a 02 silverado 5.3L. and was wondering if the AFE Magnum Force stage 1 which guarantees 25 hp would be a good idea or just stick with K&N????
 

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The AFE is a good system. I was reading about the AFE Magnum force Stage 2 and gains are up to 50HP
Here is a link
I have a AFE Stage 1 on my Duramax and will be swithing to a stage 2 soon now that I have a programmer and exhaust.
 

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They are both great systems. I have K&N on my truck and love it and my bro has Afe on his dodge cummins and loves it.... however, the Afe is a dry filter I believe which is good because u wont have to worry about the mass air flow sensor getting messed up by the oiled ones like K&N
 

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I agree that you will never see that type of gains with your truck but the stage2 would show the most.

There are airbox mods you can also do to your stock system to improve airflow as well.
 
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