12-20-2011, 07:46 PM
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#29 |
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Gold Wheels FTW
Join Date: Mar 2008
Posts: 744
Rep Power: 18  |
Simple answer is none. the most that I've seen documented is 5HP, but that can be argued as just a tighter motor/better tune. I would stick to stock, AEM, Mazda Speed (repackaged AEM), or Racing Beat. They're the only things proven to not loose HP.
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My Cars: 1974 RX4 Coupe 1991 FC3S RX7 - Sold 2003 ZZW30 MR2 (Rotary swap after RX8) 2004 SE3P RX8 (20B Swap in the works) |
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