If you are overly concerned about warranty, finacials and want to upgrade say in a few years then keep it as is. Another 15hp isn't gonna make any real difference anyways. And remember mods don't increase the cars value down the road. If you want to know where you currently stand. Simply put your stock airbox back on and make a couple dyno passes. Then swap back and do a couple more and see the gain you got. Take your rwhp numbers from dyno and add about 15% to get your crank numbers.
Your axleback didn't add much of anything other than weight loss. A ported TB might gain you a pony or two MAYBE. But, will improve throttle response.
Originally Posted by HufferSS
Fast cars have rubber on the quarter panels...you sissies need to knock it off.