The muffler delete i did before my AWE track exhaust. Yep. The delete allows a subtle sound . But going with AWE track Exhaust is a good move. Seller's Price is good. I paid 1300 for mine.
Flex Fuel kit and High Pressure Fuel Pump for Ethanol a must and tune to get to 500HP on stock or comparable turbos and I agree totally. 700HP not good on the twisties of the world, roads ain't straight for long lol
The aluminum block is holding up well even though it is open deck and cast and not billet . Lot of 600HP and 700HP VR30s dailying and pulling hard on track without catastrophic engine failures . Now going north of 800 will require billet reinforcements and close deck iron sleeves to handle...