Feels like I lost some HP after adding Mustang SLP xpipe and Magnaflow Catback?
 

I had the x-pipe and magnaflow catback put on and it seems as if I lost some power off the start when in (D)rive?? Any opinions or suggestions on the next step to regain it? The car is stock other than that. Anyone recommend a chip or cold air intake to help? Thanks!!

a hand held tuner would be nice and pass on the cai just get a drop in k&n filter

when you decrease back pressure with your exhaust mods, your low end power will decrease slightly...rev it all the way to redline and you will feel a gain. A more free exhaust flow is meant to increase top end power. Mine did the same thing. You may want to increase the inlet of air with a cold air intake, larger throttle body and better intake plenum and then get an xcal and have the car tuned for the increased flow. You will really feel a difference after that.

no need to run the car to redline unless he has a TB and plenum

I just meant he will feel the increase in HP in the upper rpm range.

Well, in dyno's i've never seen anyone install an x pipe and catback and lose an HP or TQ on the low side. usually they gain alittle HP and TQ on the low side and gain alot more around 4500 and up, especially if your an auto and no need to take it to 6K, maybe 5K. The cold air will add some more TQ on the low side and maybe 5HP to the wheels, so that will help.
You probably definitely feel the upper band, making you think your lower grunt has lowered.

Just add some 4:10's and problem solved!!

That's what i'm talking about!!:punk: