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01-26-2011, 05:27 PM
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Intake and exhaust (on the speed) should be okay with stock fuel pump. Now when you add something like hypertech, or cobb AP along with an F/TMIC, then yes you would want to look into upgrading that. EDIT: Hmm if you start deleting cats it seems you will have to upgrade fuel pump.
__________________ In progress: BC Racing Coilovers | SPC Rear Camber Arms | Privat Akzent 18/8.5/+30 | 225/40/18 Hankook Evo V12 | Build thread: http://mazda3revolution.com/forums/m...ld-thread.html Last edited by Akrynym; 01-26-2011 at 07:24 PM.      | ||||||||||||||||||
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02-08-2011, 09:10 PM
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Going back a little... Over the weekend I was at a show and met a guy with a 2010 Mazda 3 2.0L and he had replaced the stock muffler with just a straight pipe, and it sounded pretty good. Deep tone, not too loud and no rattle. It was a lot quieter than I expected for a straight pipe but a really nice sound, had the stock cats and resonator still in.
__________________  Viper 4204V Remote Start - Raptor 55W 8000K headlights - Raptor 35W 6000K Fog Lights- V-LED Switchback White/Amber turn signals - LED Interior Lights - Carbon Fiber Interior - 2 Rockford Fosgate Subwoofers - DEI 2102 Amp - Dipped Wheels/Emblems/Trim/Eyelids - Nightshades Black-outs - Ultra-Gauge - My other love: 2007 Suzuki S50: 800CC with straight pipes | ||||||||||||||||||
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