silva_rules

hi
if i wanna remove my cat convertors and i dont want the check engine sign to come what shall i do??

A Low Dime

iTrader: (13)

Like everyone said, YOU NEED A TUNE!! A tune will fix you power problems and fix the check engine light with no cats.

viciousknid

iTrader: (8)

TUNE!

not TUNE UP. TUNE UP is new plugs n wires. TUNE is reprogramming the PCM to operate according to the requirements of your cam.
I have that same cam in my 5.3 ECSB on 20"s and you can definitely tell a difference in power.
Your AFR should be 14.8 in cruise and 12.8 at WOT

silva_rules

i think also if i made a tune the check engine sign will also show but somebody told me there is a thing that you put on the cat converters sensors when when you cut them off so the check engine sign wont show ??

viciousknid

iTrader: (8)

You can get o2 simulators. but you need a tune anyway for your cam so just have the tuner shut off the o2's

norris_83

iTrader: (4)

no need for the simulators, a simple tune will get rid of it..

litreddevil

iTrader: (4)

get a costume reprogramming tune for your motor.if they don't have a place their we have a lot of people here that do mail orders,you call them and tell them what you have
and they can make you a tune and send you a pcm and you send them yours back.

silva_rules

thanks everyone

silva_rules

hi again
im thinking of changing my 4.8 to 6.0
is it a good idea ?? any advice ?? will i have problems with my transmission or any thing eles?? im thinking of putting suberban 2008 engine 6.0 or the denali 6.2 cause the performance of the 4.8 is not much what i was looking for

candy_man72370

If I were you, I would take a few days and read over as much of the material on this site as you can before asking anything else..Everything you have asked here in this thread can be found with just a few hours of reading on this site..