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I've got some stainless headers fitted to my car and i notice that some of the exhaust wrap has come off. I'm just wondering if this will effect the car in any way its only a few inches of the headers that are not wrapped. the car still drives and boosts fine. If they were cracked would i loose a lot of boost?
The difference may be slight, especially at this time of year. Your under bonnet temperature will increase. Lagged headers generally spool quicker but if there is only a couple of inches missing it will make no discernable difference.