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| RX-8 (2004 - Present) All things to do with RX-8 | 
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|  06-15-2012, 05:30 PM | #5 | 
| The Newbie Join Date: Jan 2010 
					Posts: 29
				Rep Power: 0  | 
			
			Only one that can gain something is Knight sports, Re-Amemiya, Racing Beat, AEM/Mazdaspeed even those will give you no more than 5 hp on a good day. stock intake is actually very well engineered and as long as you keep the stock intake manifold, there is really nothing much u can do. u might as well save the money and buy a new stock paper filter and change it every 10K miles, or get K&N and clean it every 5K miles. | 
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