Now the search begins, My 360 had Tubi, but wondering what is the Best sound for a 430!?
If I ever do anything more than that, it'll be Capristo headers only, nothing more. Guess you could do the headers and put the vacuum lines back. That would probably sound okay. I just think less is more anymore when it comes to exhaust. 360 has a lot to gain from upgrades. 430 not so much, pretty much already like the tubi you had in the 360 except for the exhaust manifolds, right?
The 430 makes more power stock, but it will also gain more from headers and cats. Im definitely not a big fan of how the 430 sounds in stock form, so for me changing the exhaust would be a must.
The 430 exhaust is already drastically improved from the 360. Look at the dyno's on fabspeed's web site. Much less percentage and actual HP/torque to be gained on the 430 upgrades compared to 360, and pushes the curve off 1500rpm. I don't spend a ton of time in a 7000-9000rpm areas where the gains are realized and it actually hurts low end. Looks like the Capristo dyno's are better, but they'll tell you most of the gain is in the headers alone, and that won't get you CEL's.
Looks like the gains they had were pretty good for the 430 headers. Capristo headers are a 4-2-1 style and they will definitely improve low and mid range torque better than Fabspeeds.
I installed a couple of springs anchored from the rear cross member. They create tension on the shaft and while not completely eliminating 100% of the rattle, it now only rattles a few minutes upon start up until everything gets to poperating temperature.
I currently have my valves plugged and like the sound. If I upgrade later to a aftermarket exhaust I would most likely get a Capristo Race or Kreissieg. The Kreissieg sounds amazing from the you tube videos I have listened too but the system costs serious coin!!!
Capristo is the best option, headers, sports cats (to avoid CEL) and finish it off with a TiMate muffler. It's gonna scream even louder and sharper than a Kreisseig.
