Grady_Wilson
Supporting Member
Thanks for the heads up, even with a larger muffler it should breathe better without cats.
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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Tonyrodz
Resident Resident
You'll also smell more exhaust fumes.
Charlie207
Full Access Member
I would just get rid of the 3rd - unmonitored - cat. Your engine will be stinky with all three removed.
I assume you have a tune ready to deal with the DTCs.
kbuskill
***CAUTION*** I do my own stunts!
You will also lose some bottom end torque unless you downsize your Y-pipe... don't ask me how I know
Annoying
Charlie207
Full Access Member
You will also lose some bottom end torque unless you downsize your Y-pipe... don't ask me how I know
How is that even possible if adding LT headers - effectively letting the engine breath a ton better right off the cylinder heads - instantly increases HP/TQ across the entire RPM range?
I don't want to start another "backpressure is needed" debate, because it's not a debate, and has been debunked many times.
yesss
Engine estimate
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Charlie207
Full Access Member
Tonyrodz
Resident Resident
Are you doing it, or is this just an estimate? Pretty pricey either way--imo.
