Bret Posted June 22, 2023 Share Posted June 22, 2023 So I found I have a crack in my exhaust manifold, (2010 mp8). I see there are some upgraded ceramic manifolds that are claiming increased HP, increased air flow, cooler exhaust temps, improved fuel economy. Does anyone have any experience with them? They are about double the price of the original style. Just curious if they make a difference, or is it just a lot of good advertising? Quote Link to comment Share on other sites More sharing options...
Mackpro Posted June 22, 2023 Share Posted June 22, 2023 I have no experience or heard of anyone that actually used what you described. But back in 2002 or so I custom flow ported a ETECH exhaust manifold, exhaust ports of the heads and exhaust inlet of the turbo. I spent about 8 hours with a die grinder , best I remember it only gained maybe 2 psi of boost at most , this was with a truck with high flow dual exhaust. But now days with EGR and DPF ( very restrictive exhaust) I’m not sure how much it would help. Quote Link to comment Share on other sites More sharing options...
BOBWhite Posted June 22, 2023 Share Posted June 22, 2023 I would say the same. Unless you deleting it or heavily modifying it, different exhaust manifolds won't make much of a difference. Quote Link to comment Share on other sites More sharing options...
mowerman Posted June 22, 2023 Share Posted June 22, 2023 Same here good luck … Bob Quote Link to comment Share on other sites More sharing options...
doubleclutchinweasel Posted June 22, 2023 Share Posted June 22, 2023 I know that ceramic coatings on race car headers keep the heat inside the tubes and out of the engine compartment. Should help a turbo put out more boost. 1 Quote "Eagles may soar, but weasels don't get sucked into jet engines." Link to comment Share on other sites More sharing options...
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