Exhaust Leak ???

[whitesnake97]

Has anyone lost power when installing a Mac high flow cat H-pipe ??? The sound is great, but seems like the car isn't as strong as with the factory h-pipe...... Just used the clamps, could welding it in possibly help this ????

 

[Lee]

You probably lost some torque down low, but gained some HP up high. Not unusual.

 

[blackfang]

I noticed some low(under 3000 rpms) torque loss, but felt it above 3,000 rpms when I installed my Mac o/r h pipe.