If I install my long tubes and run them for 6-8 months without getting a tune other than a check engine light from the rear o2 delete would it hurt anything? I drive 100+ miles a day and my truck has to be reliable. I want to make sure I'll be safe until I can get a tune.

 

People have ran Longtubes and or a Cam on certain vehicles and not gotten a tune for months and it was okay but, if I were you I would try and get a tune soon as you could. After you get a tune you will be happy with the results and worth the effort of getting the headers installed in the first place.

Your gas mileage will suffer a little but you'll be fine on the stock tune.

 

yea you will be ok i installed my lt's a few weeks ago and im surprised but i actually havent thrown a code, at first i did cause i figured i would have to get my rear 02's tuned out so i didnt put them in, but then a week later i put the rear 02's in and no codes since, ill prob still get them deleted when it gets tuned tho

 

i installed my catless LTs in Jan & it wasn't til the end of april that i had my tune. the only codes i got were when my front O2s died (165k mi on them). i replaced them with corvette rears & was fine. i just never took it over 1/2 throttle til i was doing datalogs - just to be safe. gas mileage actually still went up untuned - it was +1mpg in town & either +3mpg doing 65 or -1mpg doing 75. after the tune, i got another +1 in town & ain't been on the interstate yet.

 

no problem when i did mine except CEL on and low rpm performance sucked HORRIBLY. wasn't even fun to drive

 

You should be fine...of course it won't be optimal, but you shouldn't have any major issues

 

yeah, mine wasn't too bad (but i've also got a manual transmission ), but the tune definitely cleaned up the low end a bit

 

night and day after the tune. even had my tow/haul changed into a sort of sport mode, so much more fun