Completely TIG welded construction with thick 16 gauge tubing for long lasting power gains.Īccording to our estimates PPE headers can make about 30 additional wheel horsepower compared to OEM manifolds with removed catalysts. Tube lengths and diameters are increased coming together into a ported 4-1 parallel merge collector. The PPE ISF Headers make a significant increase in flow compared to the stock manifolds. When finally choosing the headers to complement our ECU upgrade and supercharger for Lexus IS-F, we selected the best headers available on the market. RR Racing has been evaluating headers for Lexus IS-F for some time now. Please note that this product is available as an option with the ECU Upgrade Tune and as part of our Performance Upgrade Package that includes our Tuned Intake System!
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