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Exhaust Manifold Be Glowing Red Hot?

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hello

my Exhaust Manifold Be Glowing Red Hot I don't know why! l checked the a/f ratio it's ok ..what als can be ??

the engine is 1jz single turbo with 264 hks cams

If your timing is overly retarded it'll send your EGT's through the roof. What sort of timing figures are you running?

I'd also confirm the base ignition timing is set correctly.