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Originally Posted by enslow
Could be on Ed, but not mine. I have no air suspension, and I have confirmed it is leaking at the exhaust manifold.
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I think what TechII was referring to was an air pump on the engine, which neither of these have. Obviously, the rear air ride compressor has nothing to do with engine start up temp.
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I am considering changing the front exhaust manifold. Is it worth considering the Dorman? Should I get GM? If I get Dorman, they come with manifold gaskets. GM didn't use gaskets at the factory, and doesn't supply gaskets with their manifolds.
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Gaskets make imperfections such as warping and uneven surfaces more forgiving, hence the use of header gaskets when used in conjunction with tube headers. I would not hesitate to try Dorman for this purpose, especially if cost is a factor.