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In 2009 GM changed these emblems from the grey outline to a chrome edged one
The combination of the patented "Y" design of the IPD Plenum combined with a larger TB allow for improved air flow and intake air speed
2003 GMC Sierra 1500
Expect no check engine lights
Porsche 991.2 Carrera Sport Headers Tuners In 2009 GM changed theseDEVELOPMENT: We sought out to maximize performance and boost response while minding clearance on daily driven cars. Our optimized 3 into 1 merge collector design improves response over the poor factory design, while our runners ultimately increase exhaust velocity into the collector and turbo. Looking into the factory headers you will notice a support in the middle runner which is detrimental to a smooth flow path out of that exhaust port all in all