Onderma

'Back pressure' was clearly the incorrect phrase. I won't let it happen again, z-train.

By tuning my carb I mean that I adjusted the idle mixture, it probably needed to be done before but wasn't completely clear to me until the lack of exhaust allowed the truck to stutter like a mofo. At this point in time it is running well. However, I ran some seafoam through the fuel and it cleaned out a nice (and clearly very old) crack in my header. I've reached the limit of half-assing the exhaust so I plan on installing pace setter headers and welding in a glass pack so I can move on to more entertaining fixes like the seats.

My speedo is bad as well. Reads 85 with the truck on and stopped, any time I'm rolling it reads 100. Driving the speed limit is like playing an instrument.

I have a sizeable exhaust tip on now, seems to work

I've tuned my carb to the back pressure a little better and gotten used to living with out the muffler. A few friends told me it sounds very retro military when I roll up. It's quieter than many Hondas. Under acceleration the higher rpm throw out a guttural throb, sounds like nothing else. I don't want to say it sounds good to all people, for me it completes the vibe nicely though.

I too am running the stock cat with my rusted muffler gone. Early on I realized it was a bit too loud and id lost some of the giddy up, so I tore the neck out of the old muffler, bent it and bolted it up to the end. I wasn't sure if my Idaho Official redneck exhaust tip would do the trick but it really did. It quieted it down a bit (enough) and gave me a little more back pressure so I even noticed the low end torque go back up to normal.