Our 3" exhaust offers very little backpressure or restriction to flow. That's usually a good thing - but in some cases, it can make it difficult to control the boost level. A good example is a car with a Voodoo turbo, which can't handle any more than about 8 psi. But what if you want to buy a 3" exhaust so you've got the best parts for future improvements?
Meet our 3" exhaust restrictor. Simply pop into one of the joints in the exhaust system and it will provide just enough extra restriction to keep your boost levels under control. It offers two levels of restriction, simply pop out the inner ring to open it up a little. When you upgrade your car to an FM II, you can remove the complete restrictor. Simple and easy.