So my R32 Gtst has a 3" Exhaust with just a varex cannon on it, and whilst that is great for shutting the car up, not great for when I want to give it a bit of what for, so I'd like to be able to do that with my car a bit quieter, so the obvious route is, get a mid muffler added to the car. Now I have only just started looking at what is around, started with ebay as it's easy to look, and found,
http://www.ebay.com.au/itm/Magnaflow-3-0-3-0-out-Universal-Race-Series-Stainless-Steel-Muffler-14219-/300700179046?pt=AU_Car_Parts_Accessories&hash=item4603209a66#ht_2925wt_1140
I have heard people mention Magnaflow before so I assume this is good quality item, but I am wondering if adding this muffler will hurt performance very much.
The car has a highflow turbo, FMIC, Z32, 555cc Nismo injectors, and Jez tuned it and got 201rwkw out of it on 20psi, pretty happy with that. I know I will need to get my car back on the dyno if I change the exhaust, but for a muffler like this, is it urgent? and would I see a significant performance drop, also has anyone used one of these mufflers, would the drop in noise even be worth the potential lower performance?
Thanks guys.