Posted: Mar 01 2007 at 10:47pm | IP Logged

I have a 2006 frontier SE with 5400 miles on it and I recently had a 40 series flowmaster installed without tailpipes. The truck sounds good but I seem to have lost a considerable amount of low-end torque and that isn't acceptable so I was wondering if anyone else has run into this problem or if anyone had any thoughts on the cause. Thanks

Posted: Apr 15 2007 at 12:56pm | IP Logged

you reduced the back pressure too much.put the tail pipes back on it and you should gain some of the torque back.but any time you reduce back pressure you will lose low end torque.