I have a S5 vert w/ an S4 block w/ an S5 intake manifold and i've noticed that it's not making power as it should. It makes great torque for a vert but the hp is a little funny. The car will begin to pull good at about 2800 and then after 4400 or so it kinds pulls but not as hard and then at about 5800 up I feel the horse power kick in and i'm gone. Anyone have any ideas? thanks

 

Mine does that sometimes... What are your modifications? Mine is mainly due to tuning.. You may need to look for deadspot on your TPS (search under Setting the TPS 101 or something like that..)

 

Intake and full exhaust are the only mods