BigRed53

would anyone recommend getting a re-tune after gutting your cats, for changes in back pressure???

i have a nelson tune, and i had my cats on when i got him to tune my truck

SOTP difference has not been noticed, being that i made my fastest pass yet after gutting the cats. i had not previously ran with the cats on there. So a difference in track times can not be noticed.

any input on tunes with gutted cats would be appreciated, thanks guys

jared

virgils4.85spd

need to delete rear o2 sensors or youll eventually get a code. Hope it helps.
Derek

BigRed53

already did bud, appreciate that tho, i just wanted to know if it would change up your tables enough to require a re-tune, running richer, or leaner.

i already deleted my rear 02's

Rhino79

iTrader: (7)

You can disable the Cat Converter Protection table.

foff667

iTrader: (1)

werd, if this wasnt already deleted by your tuner then !COT wouldnt be a bad idea.

dewmanshu

iTrader: (4)

your fueling pe and non-pe is done prior to the rear o2's. So deleting your cats is like essentially putting on a larger exhaust...more flow. I can't think of any thing in your tune that would take advantage of this in such a small scale move.

BigRed53

thanks guys, just checkin, im no tune expert, thats why i pay