Outstanding! Manufactured by Heartthrob for SS Diesel, this product works exactly as stated. Easy to install in about a 1/2 hour by myself. Dyno sheets indicate exactly how the H1 will perform with this eaxhaust and it does just that. Great bang for the...
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From: Ron

excelent parts, i have and would again reccomend these parts to anyone, i had a small issue with my injectors that i fixed but the tech support offered to send me all new ones if i ever have any issues, i love the tune, i love the instant heat glow plugs...
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From: Jon A.