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| 06-06-2019, 04:34 PM | #1 |
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Enlisted Member
 3
Rep 30
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S63 Cylinder heads
Technician of mine said I may have a valve stem seal leak. It wasn't noticeable until after I installed catless downpipes. I have faint smoke coming out my exhaust. Has anyone ever had the cylinder heads on this engine worked? If so is it possible to upgrade them if so what else would be needed to do so? Thanks in advance
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| 06-06-2019, 05:23 PM | #2 |
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First Lieutenant
 
112
Rep 357
Posts
Drives: E70 X5M
Join Date: Dec 2018
Location: Portland, OR
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After catless downpipe install and tune I've noticed a puff here and there as well. It's consuming basically no oil right now though - maybe a quart every couple thousand miles if that. So I'm not too worried yet.
Might use the catch can install DIY that Sophisticated Redneck put together to help mitigate the issue and keep as much excess oil out of the system as possible.
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- 2013 X5 M - Silverstone Metallic w/ Black Perforated Complete Merino - All OEM Options - 12.5mm/20mm Spacers - Velos Stage 2 - xHP Stage 3 - AA Catless - Megan Racing Supremo - PTP Blanket - K&N Drop In -
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