exhaust manifold and vacuum reading ?
exhaust manifold and vacuum reading ?
I had oem ex.mani/turbo and my vac reading at idle was around -300-350 mmHg with S2 cams
after I went with custom tubular manifold and bigger turbo, vaccum reading went to -400-450 mmHg with same cams (just almost like oem cams -500 mmHg)
so is the exhaust manifold somehow related to vacuum reading ?
after I went with custom tubular manifold and bigger turbo, vaccum reading went to -400-450 mmHg with same cams (just almost like oem cams -500 mmHg)
so is the exhaust manifold somehow related to vacuum reading ?
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