12-21-2005, 07:10 PM
I had a friend that bought a Fantom .18 & used the stock 2.5 Maxx pipe. He then bought the Fantom pipe. It made a huge difference. It might be designed for those engines though ? Not sure ? I have seen others say it worked good on other engines also. On the heat thing though, I would say Steel would heat up slower over Aluminum & stay cooler farther from the manifold. Aluminum heats & cools very quickly compared to steel. Possibly the steel pipe just stays closer to the same temp. all over ? Not sure there either. Another theory is like boat exhaust that has water injection. Reason for this is the cooler temps in the exhaust actually kinda help suck the exhaust out of the engine. Making it run better & more consistant especially in higher RPM ranges. Just info & ideas ?! :confused: