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Power Strokes
6.4 Aftermarket
Way too much smoke...
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[QUOTE="footlong70, post: 1281156, member: 8456"] x2 On the something else is wrong. Not a tuning issue because the hd300 does not smoke cruising down the highway at constant speed. Sounds like a boost or an up-pipe leak. Even when your totally confident nothing is leaking, something tends to be leaking.... Seen it so-o many times. The only real way to check imo is by pressure testing from the lp turbo inlet against the pistons with the engine off. Then you get a total idea of the boost side of things. I've seen significant leaks from intake manifold to heads, bolt holes in the intake manifold, turbo crossover piping, turbo compressor cover o-ring, boots (not tight enough, hard to see rips), v bands, pipe ports missing plugs, ect... As far as the exhaust side I'm sure you already know to look for soot, but even then its very easy to miss or not see anything out of the ordinary. [/QUOTE]
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6.4 Aftermarket
Way too much smoke...
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