Good morning Mark and fellow Cruisers. I have the BTG dual cat back system on the vehicle already........so that end of things has been looked after. My focus on the cat is for one reason. If in fact , the cat is creating ANY backpressure, then it really won't matter what you put after it to increase the flow. The problem is with the first road block......which is the cat. I really wish some one out there knew any solid info on the flow characteristics of the factory cat compared to the after markets. Remember, on these forums, we all put a certain degree of trust into each other for the right info on all our different installs. A good rule of thumb is to do as much investigating as possible in regards to whatever part you are considering installing. This becomes more critical when were start to fool around with the engines and their managment systems. Whew.....pretty dry stuff for a Saturday morning !! These cats are readily available, but I just want to make sure I have the right info and the right part. Thanks in advance for any more assistance that may be ...." in the mail ! "
