J_RoD_808 said:
a question for all the guys wit headers.... i was talkin wit a local xhaust shop about headers and he told me it aint worth it cuz its gonna be plenty maintenece down the road u wont feel any gain in power and my MPGs would drop down crazy. so just askin is it worth it would u feel power and would MPGs drop that bad??? i was gonna go wit JBA ceramic titaniums and i already have a VOLANT CAI W/SCOOP POWERAID TBS and SPINTECH TRUE DUAL XHAUST setup
Exhaust is a system and should be thought of that way, it shouldn't be approached like some random assortment of individual components and the system is only as good as it's weakest link.
As far as headers go, maintenance won't be any more of an issue on a quality, properly coated set of headers than it would be on the stock manifolds and in all likelihood, less maintenance.
The headers I installed were worth about .2 to .25 at the track and you most certainly feel them so I don't know what the guy's talking about there either. If you put the wrong size headers on there, you will feel a loss in the low end power and exhaust sizing is a compromise anyway. Bigger = more power up top, smaller = more power down low so you strive to hit a happy medium for the best usable gains for your application. Ideally, exhaust size would expand and contract through the power band like the new Ferraris do.
Gas mileage? I personally haven't noticed much change if any after all the mods I've done but I always drive it like I stole it so I always get between 13 and 14 per gallon with mixed driving. I think that provided you are tuned properly with UpRev, your mileage should not be much different than what you are getting now and in fact there is a mileage tune being worked on as we speak. A friend of mine ran his Tundra on the Dyno yesterday and it came back at 320 HP with an AFR of 11.5, talk about pig rich from the factory, lol. My point is that the factory settings usually aren't optimal and could stand some adjustment with UpRev to help mileage.
Your spintech muffler is manufactured by a company called Dr Gas and if it is as high a quality as the rest of there piping, it's a good start to a better system provided your pipes are no bigger than 2.25" with duals. I think that 2.5" duals are way too big for our trucks unless you are charged or running NOS.
Just remember that exhaust is as much an art as a science and even the most experienced of exhaust tuners will have to put it on the Dyno to see if they actually gained like they thought they would. Good luck and happy modding.