Nice find! 
GMPP CAI and GMPP Cat Back Exhaust
- Thread starter 700 sportsman
- Start date
700 sportsman
"That motor runs gooder than hell !"
Got both installed and boy o boy does it sound good. I was sure to take lots of pictures, and I'll try to get a sound clip up tomorrow or saturday
700 sportsman
"That motor runs gooder than hell !"
Ok ladies, here's the pics. and write up #1:
Installation of GMPP Cold Air Intake PN: 17800809
Well start off by removing the stock air box lid and filter. Then loosen all clamps and piping. Also be sure to unplug the MAF sensor and place it in a secure place. You are also required to remove the top Vortec plastic cover, it is just pushed into rubber grommets.
Next you don't need to remove any bolts to remove the air box, they are simply pushed into rubber grommets.
Then you will have this:
While removing the tubing you will need to remove the hose (vaccum?) from the fuel rail:
There is also a plastic clamp that is pushed into the stock tubing, it is a bit of a pita to pull out, but we removed it just to clean things up a bit.
Don't have any pics. of the next step, but it is very important. You need to remove 2 of the rubber grommets that go into the holes in the plate below the air box that holds it in place, and reinstall them on the GMPP air box. You next need to place the foam seal on the end of the box around the opening into the fender, it has a paper backing that needs to be removed and stuck on.
Then your all set to press it firmly in place.
Next comes the piping and clamps. I installed the MAF, then the rubber tube on the air box,
then went over to the throttle body and installed that rubber tube.
I left all of the clamps fairly loose so I could manuver them to fit into the metal pipe, once I had the metal pipe in I hid all of the screw on the clamps and then tightened them all up. Next I installed the new (vaccum?) hose that is supplied in the kit. I first attached it to the fuel rail as shown before, and held it up and it was several inches too long, so I marked it and cut it off, then I installed the clamps to it.
Last I installed the filter and the air box lid, and fired it up, it does make a bit more noise, but it sure does look nice.
Installation of GMPP Cold Air Intake PN: 17800809
Well start off by removing the stock air box lid and filter. Then loosen all clamps and piping. Also be sure to unplug the MAF sensor and place it in a secure place. You are also required to remove the top Vortec plastic cover, it is just pushed into rubber grommets.
Next you don't need to remove any bolts to remove the air box, they are simply pushed into rubber grommets.
Then you will have this:
While removing the tubing you will need to remove the hose (vaccum?) from the fuel rail:
There is also a plastic clamp that is pushed into the stock tubing, it is a bit of a pita to pull out, but we removed it just to clean things up a bit.
Don't have any pics. of the next step, but it is very important. You need to remove 2 of the rubber grommets that go into the holes in the plate below the air box that holds it in place, and reinstall them on the GMPP air box. You next need to place the foam seal on the end of the box around the opening into the fender, it has a paper backing that needs to be removed and stuck on.
Then your all set to press it firmly in place.
Next comes the piping and clamps. I installed the MAF, then the rubber tube on the air box,
then went over to the throttle body and installed that rubber tube.
I left all of the clamps fairly loose so I could manuver them to fit into the metal pipe, once I had the metal pipe in I hid all of the screw on the clamps and then tightened them all up. Next I installed the new (vaccum?) hose that is supplied in the kit. I first attached it to the fuel rail as shown before, and held it up and it was several inches too long, so I marked it and cut it off, then I installed the clamps to it.
Last I installed the filter and the air box lid, and fired it up, it does make a bit more noise, but it sure does look nice.
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Very nice!
Last edited:
700 sportsman
"That motor runs gooder than hell !"
700 sportsman
"That motor runs gooder than hell !"
Write up #2 for installation of GMPP Cat-Back Exhaust (Performance model) PN: 19158653.
Sorry, I don't have any pics. of the install process.
Well first off you may want to jack it up, put it on the lift, etc.
Next, removal of the stock system. I started at the flange just behind the cats, I gave them a good soaking in blaster to start, then I slowly removed them running them out a little bit then back in, just too make sure to not break the studs. (Note, if you do, you will need to remove the studs from the pipe, and the kit does come with new stainless bolts)
With the flange loose, I tried to find the best/easiest place to cut the exhaust for removal. I chose to cut it a few inches after the muffler.
After it was cut, I removed the muffle and the pipe going foward from its hangers. Then I had some help to remove the tailpipe. We started removing the rear hanger to be able to move tailpipe to aid in the removal of the 2 front hangers.
Here's some pics of the new system before it went on:
Muffler
GMC Tip
Tailpipe and Tip
Intermediate pipe with flange and flex pipe
I pretty much installed in reverse order. Starting with the intermediate pipe.
I placed the hanger towards the rear of the pipe in it's mount, then I installed the nuts on the flange, and tightened them down (no need to leave them loose because of flex pipe).
Next went out back and installed the tailpipe, the front 2 hangers, then the rear. With both pipes installed I took the stainless band clamps included in the kit and placed them on the pipe, and then had my help pull the tailpipe back, to open up the gap for the muffler, and I slid it on the front pipe, then had them swing the tailpipe foward and positioned the clamps and tightened them down. Next it was time to fire it up.
I'll leave it at that until I get some installed pics. and a sound clip.
Sorry, I don't have any pics. of the install process.
Well first off you may want to jack it up, put it on the lift, etc.
Next, removal of the stock system. I started at the flange just behind the cats, I gave them a good soaking in blaster to start, then I slowly removed them running them out a little bit then back in, just too make sure to not break the studs. (Note, if you do, you will need to remove the studs from the pipe, and the kit does come with new stainless bolts)
With the flange loose, I tried to find the best/easiest place to cut the exhaust for removal. I chose to cut it a few inches after the muffler.
After it was cut, I removed the muffle and the pipe going foward from its hangers. Then I had some help to remove the tailpipe. We started removing the rear hanger to be able to move tailpipe to aid in the removal of the 2 front hangers.
Here's some pics of the new system before it went on:
Muffler
GMC Tip
Tailpipe and Tip
Intermediate pipe with flange and flex pipe
I pretty much installed in reverse order. Starting with the intermediate pipe.
I placed the hanger towards the rear of the pipe in it's mount, then I installed the nuts on the flange, and tightened them down (no need to leave them loose because of flex pipe).
Next went out back and installed the tailpipe, the front 2 hangers, then the rear. With both pipes installed I took the stainless band clamps included in the kit and placed them on the pipe, and then had my help pull the tailpipe back, to open up the gap for the muffler, and I slid it on the front pipe, then had them swing the tailpipe foward and positioned the clamps and tightened them down. Next it was time to fire it up.
I'll leave it at that until I get some installed pics. and a sound clip.
