Tune problem after cod air and throttle body spacer

[Lauro2015sierra]

I have a situation I wanna see did you’ll can help me out, I recently had my truck tuned with just a flow master 40 muffle and third cat delete and it ran really good but after all that I purchased a airaid cold air and throttle body spacer and now the truck doesn’t run the same it’s less responsive than before and the transmission has a slight lag between shifts do I need to get it retuned or is the air fuel mixture causing this due to the  bolt ons I installed

 

[Nasty]

Take out the throttle body spacer. It does nothing 

 

As for the lag.  Turn off stabilitrak. And it will shift better 

[Lauro2015sierra]

How do I turn off stabilitrak I’ve held the traction control button and the stabilitrak turns off but then comes

back on

[Logan Lanfear]

Might be worth getting retuned.  As for the spacer, I have heard both ways if they actually do any good.  A retune will get you better performance out of your current mods.  And you can get your shifts firmed up too.  

[Lauro2015sierra]

Yea I might do that 

[YEGbluesilverado]

Throttle spacers only help on wet intakes ours are dry so just money wasted. Take it off and bet it's better again.

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