DC Progress
Headers for DC M3 are back from Swain Tech with a wonderful ceramic coating. We’ve been having great results from these coatings. Significant improvements in heat retention which also means a lot less heat in the engine bay. Getting measurable power also helps justify the time and cost.






very nice..how much they go for? really looking into a E46 but not sure if anything goes rong with ill be able to fix it…mmmmmm M3’s
These are e-bay headers, not sure how much we got them for. Coating is done by Swain Tech. I think coating was a couple hundred $.