I just got my Magnaflow system the other day from the GP, and got a chance to install it today.
First, I thought I was going to be in trouble because the box was torn and retaped, but everything was there. So I took my other truck and Wife's car out of the garage to make room for my Silverado, which wont fit all the way in. From the time I started moving cars until the finish of my short test drive was less than an hour! The only time I had to jack up the truck was to get the old tail pipe over the axle, didnt even have to cut it. The fit was perfect and went together super easy.
The system sounded too quiet in the driveway, but out on the road it is noticeable. A little too much interior noise, but not that bad (definetly not Blowmaster bad). It seems like I lost a little low end, but that may just be my imagination. Anybody else notice this?
Overall I am very happy with the system and with the service from Nasty N8, he is a very good and easy guy to deal with.

 

good to hear, I put my own custom kit on witht he 14 inch casing dual in and single out dumped and I like it but a little too quiet for me. next will be the cats off and an x pipe put in.

 

You may have to let the PCM relearn some new values with all the additional air flow going through the engine.

 

Put an intake on your truck...UPD or an FIPK etc...you'll get the low end back. I noticed the same thing, but my UPD seemed to add it back.

 

Glad to hear the exhaust goes togethor well. I am looking for an exhaust for the pickup and want the Magnaflow. So it's not loud at idle and lower RPMs? That's exactly what I want, I have to give the nieghbors a rest from the Camaro in the winter.

 

It has a little rumble, but it is not loud at low speeds at all, just louder than stock. And it went otgether very well. Only minor adjustments once all the hangers were on.

 

I went with Straight Pipes and a single cut out on my truck... and its perfect... not loud downlow at all...... Up high the bitch screams.....