OK had the ATP 3"down pipe with cat installed for a few days now and have some time to run and adjust it a bit.
On the adjust part I had a hit from a bad bend around the gas tank heat shield, had a new stick re bent this morning and that issue is solved. While looking at it I realized that the flex down pipe has a lot of slop in it, it is like 8" long at least, so I asked my Monroe buddy to weld me a small stay from the new lower section of the ATP, in front of the O2 bung, to my frame. That did it very nicely. As it was, it just hung from the flex down pipe all the way to the first rubber grommet at the front of the rear wheel, too far in my opinion.
Still have a slight rattle where I need to loosen up the v-clamps and turn the cat a hair to get it centered in the channel a little better. Price one pays for custom work though and I am getting it worked out.
Power and spool are just too much. It works well and is all I will do for my exhaust. I just wanted all to know my experience with this install, it wasnt bad at all. Worth the money for sure, and I would say if you are going to Stage II, do this mod. If not, still do it.
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The recipe for perpetual ignorance is: be satisfied with your opinions and content with your knowledge.
Elbert Hubbard (1856 - 1915)
2003 Electric Blue GT-30,000 Miles on the clock
Stage 1, Greddy Profec II B. Turbo Chargers Wastegate set to 13#. Forge Motors BOV (Blue of course). Brand AMX Intake/AirCooler Pipes/K&N Cone with Snorkel to Fender well, MSD Coil, Live Wires(Blue of course), Factory rear sway bar, KYB struts and shocks, BTG strut tower brace, Suspension Techniques 1.3\" F/R lowering springs, ATP 3” down pipe with high flow cat, BTG axle back exhaust, Rear Spoiler. Russel Brake Lines/Hawk Brake Pads/Power Slot Cyro Rotors on a four corners
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