I installed my Greddy TI-C today and WOW...nice quality and really easy to put in. I did it in my driveway in 2hrs. I have a Hallman MBC and K&N cone filter with the adapter on the way. I'm going to get tuned maybe as early as this weekend but I wanted to know if I put the silencer that came with my Greddy in, would there be any loss of HP (major or minimal)? I still have the stock DP and cat as I'm trying to somewhat stay as close to stock as possible.

Thanks

 

Of course there will be a loss in power, your installing a restriction.

 

Guess I have to tell the wife I lost the silencer.