Well, I know the stock Y-merge is around 2.5" max so if the Ebay Y-pipe is 2.5" to 3", and then that mates back at 2.5" and reduces down to 2.25" pipes, you have some funky flow going on. Maybe that is it, not sure though..
Top end looks good, but really need to see these on a car with a full catback. We may have some untuned > 300whp dynos in store.....
__________________
2013 Ford Mustang GT
374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
|