6.2 GM Gas Duals

timswi · Feb 20, 2012

WilliamBos said:
What companies have you checked?

Contact MBRP...

HTTP://mbrpautomotive.com/index.php...evy/GMC&model=Silverado/Sierra 1500&year=2011

A question! do you hsve to run premium? Or will it run fine on regular?

I've been hunting around...Autoanything seems to have the widest selection right now..I might just call them...

I run it on regular, have tried premium and there's no difference in anything.

rsewill · Feb 20, 2012

You can always drill a few holes in your muffler. Worked well when I was a kid. Now I like them as quiet as possible.

WilliamBos · Feb 20, 2012

timswi said:
I've been hunting around...Autoanything seems to have the widest selection right now..I might just call them...

I run it on regular, have tried premium and there's no difference in anything.

So no spark knock on regular? Good to hear, researching next truck.

RollingsFarms · Feb 20, 2012

Gas keeps going up and you can buy mine.haha

foreman Etexas · Feb 20, 2012

I havent put one on this exact truck but have done everyone I have had. I sure do like the sound of flowmaster,gotta get a high flow cat.or take it off all togther. But magnaflow,borla are also some good ones. X back systems or the cheaper route single inlet dual outlets.

WilliamBos · Feb 20, 2012

foreman Etexas said:
I havent put one on this exact truck but have done everyone I have had. I sure do like the sound of flowmaster,gotta get a high flow cat.or take it off all togther. But magnaflow,borla are also some good ones. X back systems or the cheaper route single inlet dual outlets.

It has 2 cats, they ARE HIGH FLOW!! The GM cats have been since the mid 1990's, and it will actually run worse with out them.

foreman Etexas · Feb 21, 2012

WilliamBos said:
It has 2 cats, they ARE HIGH FLOW!! The GM cats have been since the mid 1990's, and it will actually run worse with out them.

You have to get a tuner/programmer,when you pull the cats..but not saying do it,gotta gett'er inspected

I have owned chevy's,im guessing gmc's are the same......

WilliamBos · Feb 21, 2012

foreman Etexas said:
You have to get a tuner/programmer,when you pull the cats..but not saying do it,gotta gett'er inspected
I have owned chevy's,im guessing gmc's are the same......

No, would not say that...

. What gets done with the oxygen sensors?? Not that we do that...