MAPerformance releases revamped Phenolic Spacer for Evo 8 / 9
#37
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A competitor did do a dyno test on a Hyundai Genesis with and without the spacer and I believe it showed a consistent 8-10whp increase. Now I know different cars will yeild different results, but I'm hoping there will be one available for the Evo X when I pick one up!
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These type of phenolic spacer do not require IM gaskets do they? Using these things make me wonder how well they seal. On an N/A application I wouldn't care but F/I would cause some major issues.