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Installed the Gibson today

3171 Views 4 Replies 2 Participants Last post by  roostfactor
This afternoon I installed the Gibson SS single side exit system on my Armada. I haven't driven it enough to get any performace impressions but I will rate the system, 1-10 with 10 being the best.

All necessary parts included - 10
Quality of parts - 9
Quality of instructions - 7
Ease of installation - 8
Fit and clearance - 7

I will attempt to explain how I arrived at these ratings.
The big problem was that the overall length of the system is to short. There needs to be about 1 1/2" added to the length of the resonator, the muffler or the front end of the tail pipe. If I slid the resonator all the way on the Y pipe, and the muffler all the way on the resonater then the tail pipe would hit the splash guard on the rear fender well. I had to assemble the system with just about 1 1/4" lap at each joint; the lap should be at least the diameter of the pipe (3") to make a good seal.
Also the tail pipe needs a little design change. It comes too close to the spare tire, only about 1/2" clearance. If you try to rotate the muffler to get more clearance from the spare (the inlet and outlet are off center) it then is too close to the floor or chassis parts.
The end of the resonator that connects to the Y pipe is expanded too much; it fits loose and there is no way the clamps furnished will tighten this joint. I tightened the clamp until it was bending and deforming, but it would not make a tight joint. I will buy a heavy duty clamp and see if it will do the job.
Overall the system looks good. Good welds, bends and the tip clamps on very secure. I will report back on sound and performance after driving more.
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Ok so I am curious, what is your semi-long term impression of the Gibson?
Hey thanks alot for the detailed update. Knowing that you would do it all over again is a pretty strong statement in favor of the Gibson.

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