Cant seem to find a straight answer? I know it seems to help a tad as far as throttle response, but i cant seem to find out if i install an LS3 throttle body on my 2008 Denali will it need a tune?

 

It may drive a little quirky without one. A tune should be done but probably doesn't have to be done.

 

Yeah im going to install some Kooks soon on this Denali i just got... and of course have Justin(BB) do a Tune but until i did get tune i wasnt sure if truck would drive or act right with the LS3 Tbody only.

 

no tune needed you will get better throttle response but thats all.

 

There is one setting in the tune that can be updated for the bigger TB. It is the throttle body area conversion. It mainly effects idle.

 

Keep in mind, the LS3 throttle body won't work with the factory L92 intake tube. You have to go with an aftermarket tube like an the Airaid MIT or a full cold air kit.

I did the upgrade with a ported LS3 TB on my L9H and it drove just fine with out a tune for a several months before I had it tuned.

 

all you have to do to make the original fit is a little grinding. did it on my brothers 09 tahoe

 

I have a Volant CAI kit on it now...??

 

Are you talking about a factory L92 Tahoe? Rare bird right there.

 

I don't see why it wouldn't work.