Hey guys! Pictures will be coming soon in another thread....
OK, I went to my local shop yesterday to get a Magnaflow muffler and Y pipe installed. The dude convinced me that the best bang for the buck would be a conversion to true duals. That was a little more than I wanted to spend, so I ended up with this configuration:
They cut off the pipes just after the cats on each side, then welded pipe from each cat back to a dual 2.5" in, single 3" out 14" magnalow (12198). I was concerned about adequate scavenging, but he showed me how the muffler acts as a crossover (?). The pipe is dumped just before the rear axle. Stock resonators both removed. $270.00 installed.
The truck sounds really nice now. Moderately loud, but can be easily covered in the cab with a little radio volume. No drone!!!
Here's the rub. After getting home I noticed that when revved the truck seems to bog in the higher RPM range. Could it be the ECU needs to relearn the proper curve to go with this exhaust? Could this be a faulty approach to routing the exhaust (no y pipe)?
I did install a new CAI that evening (despite the issues), but it did not seem to effect the bog. I do have a DSP in the mail, so perhaps that can be used to diagnose or rectify the problem...
Sorry this is so verbose, but I'm buzzing on my morning java ATM!