Dawrah Posted December 20, 2008 Share Posted December 20, 2008 my car was pretty much stock until a few weeks ago. last month my friend and i installed a gutted up pipe and perrin equal length headers. when we dropped the stock exhaust manifolds we noticed that the valves were very white coated, assuming ash; sry no pics. just wondering if anyone else has noticed that or if there is something to be concerned about or not. like i said the car was stock, no tunes. running lean? but why if it was stock. thx to any advice in advance. btw, install went smooth, no leaks, upipe slid right down, power gains felt on launches, noise sounds good. Link to comment Share on other sites More sharing options...
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