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Originally Posted by Johnny Danger
If I am understanding things correctly, its seems as though you have gone completely catless. If that is the case, then you have eliminated virtually all of the back pressure from your exhaust system. That would explain why you have lost so much low end to mid range torque. I would suggest putting the oem headers/pre-cats back on, and eliminate the secondary cats. By doing so, you will regain some essential back pressure, at the same time open up the flow of exhaust further down stream and shed some unnecessary weight.
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yup completely catless. I did get a chance to take it on the road today with those venturis removed from the muffler and there is a definite improvement . I will take your advice and try putting in the original primary cat and see what happens, I wont be able to get to it till next week, will let you know what happened.