Well first off I have bassani exhaust all the way back from the motor when I start to get on it a little not much it sounds like a bad exhaust leajk I wasnt sure if thats what the headers sounded like or if something is messed up.It feels also like the throttle response is poor what should I do I might just be paranoid but it feels like it is losing power.Please reply thank you

 

Well im not sure if it will help becasue you have the Bassani Headers. But when i was getting JDM's Longtubes on my truck and his highflow cats to my bassani cat-back. Jim told me that you lose a 1# of boost from the headers becasue you are losing back pressure. I also was getting done his 4lb lower pulley kit and wanted them to put the stock size upper on but they said leave the smaller one for the 1# of boost loss from the headers. Hope this gives you an idea but im not sure as i think the Bassani headers are shorty headers.