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My turbo started to be laggy and unresponsive :( Hey guys. cut long story short. I've just had my car dynod 2 days ago and made an impressive 272kw at the wheels on 98. Car drove pretty well and was quick. Although I noticed when driving home on the M1 shortly after the dyno run, my car would be inconsistent with how the boost would come on. This was especially evident in 3rd gear as the intake would sound really loud but the car would not pull. I didn't think too much of it, only until today my turbo started to feel really damn laggy. I would have to push the accelerator all the way to the floor for the turbo to kick in And I can't really hear the turbo spool like it usually does. The last time I had this issue is when the turbo manifold bolts were loose. I had tightened the bolts and the car was transformed. The the boost came on hard and you could hear it spool nice and crisp. So I thought it would be a good idea to get a mechanic to add a metal gasket between the turbo manifold. Once I had the metal gasket installed the car never really felt the same and im not too sure why? Also the bolts were constantly coming loose no matter how many times I would try and tighten them down. Do you think this could be the underlying issue guys? I have a map sensor so would a boost leak still cause sever turbo lag? Any help would be much appreciated.