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2015+ S550 Mustangs
2.3L EcoBoost I-4 Engine Modification/Discussion
Aftermarket downpipes causing smoke?
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<blockquote data-quote="PewterCam" data-source="post: 15194650" data-attributes="member: 167373"><p>I've done Tons.. and tons of research and screwing around with my car on the issue and a bunch of posts on another forum about it. </p><p></p><p>Its not actually the Downpipe or bad turbo seals causing the Smoke. The PCV and oil separator on the car is allowing oil to backup into the turbo at idle which pushes out out of the turbo seal. Even cars with stock DP and stock exhaust have been smoking its just less noticeable because the Cat tends to scrub more of the junk from the exhaust before it makes it to the tailpipe but the Carbon buildup will still be present. Mine from Day 1, totally stock, had an oil smell and tons of carbon on the tailpipe and back of the car. Once I went DP and single 3" exhaust it became much worse and strangely the heat from exhaust was yellowing the paint and twice caused the rear reflector to warp and peel away from the car and left the back of the car covered in even more black spots of carbon crap. </p><p></p><p>There are various band aids like raising the idle which gives just enough relief in the system to allow oil to drain but eventually it will start to smoke again. I tried all kinds of "fixes" on my car and found the best hands down fix is a UPR Dual Valve Catch can and gutting the PCV valve. You need to gut the PCV and let the UPR DV setup take over the all the PCV duties for it to work properly. On my car not only did this 100% solve all the burning oil, smell, and carbon buildup all over the back of the car but I also have not had any more problems with heat melting the reflector and causing it to peel off the car and I noticed the paint is not yellowing around the exhaust either. Leads me to believe the recall for the excessive under body temps is because of the constant oil burning. Anyway I am curious to get my hands on the revised oil separator from ford and give it shot just to see what they changed and see if there is less oil in the catch can. At this point I drain about 1/4 cup of oil every 1000 miles. Hope this helps!</p></blockquote><p></p>
[QUOTE="PewterCam, post: 15194650, member: 167373"] I've done Tons.. and tons of research and screwing around with my car on the issue and a bunch of posts on another forum about it. Its not actually the Downpipe or bad turbo seals causing the Smoke. The PCV and oil separator on the car is allowing oil to backup into the turbo at idle which pushes out out of the turbo seal. Even cars with stock DP and stock exhaust have been smoking its just less noticeable because the Cat tends to scrub more of the junk from the exhaust before it makes it to the tailpipe but the Carbon buildup will still be present. Mine from Day 1, totally stock, had an oil smell and tons of carbon on the tailpipe and back of the car. Once I went DP and single 3" exhaust it became much worse and strangely the heat from exhaust was yellowing the paint and twice caused the rear reflector to warp and peel away from the car and left the back of the car covered in even more black spots of carbon crap. There are various band aids like raising the idle which gives just enough relief in the system to allow oil to drain but eventually it will start to smoke again. I tried all kinds of "fixes" on my car and found the best hands down fix is a UPR Dual Valve Catch can and gutting the PCV valve. You need to gut the PCV and let the UPR DV setup take over the all the PCV duties for it to work properly. On my car not only did this 100% solve all the burning oil, smell, and carbon buildup all over the back of the car but I also have not had any more problems with heat melting the reflector and causing it to peel off the car and I noticed the paint is not yellowing around the exhaust either. Leads me to believe the recall for the excessive under body temps is because of the constant oil burning. Anyway I am curious to get my hands on the revised oil separator from ford and give it shot just to see what they changed and see if there is less oil in the catch can. At this point I drain about 1/4 cup of oil every 1000 miles. Hope this helps! [/QUOTE]
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2.3L EcoBoost I-4 Engine Modification/Discussion
Aftermarket downpipes causing smoke?
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