I had the TSP Rumbler and SLP Y-Pipe installed last Thursday and I finally had time tonight to go and open it up on a few back roads tonight.

From a dead stop punch, my tach needle went into the redline waaaaay too easily than before. I let off when I saw it going past 6K. Have any of you had this problem before, and can it possibly be attributed to a loss of back pressure/low end? The car feels slightly stronger with this new exhaust up top and on the highway, but the premature redlining has me wondering if this is normal.

 

Stock tachs are innacurate. Get a shift light. Getting to your redline quicker is a good thing for performance anyway.

If you lost any low end its because you're running richer now, not from any lack of back pressure. Backpressure = torque is a myth, exhaust velocity = torque.

 

ah...when i punch it from a stop...my car redlines quickly too...usually cause the tires are spinning like a top

 

I can do that from a 50 roll

 

Me too