I know it's a bit off topic here, but I figured you FI guys would know where I can find a 102mm tb that I can control with the factory dbw harness on an 03 silverado. I have an LS3 tb already with an X link, but I want to do away with it. It really worries me cuz I don't think it is working properly. Any help is appreciated.

 

What don't you think is working properly? The TB or the X-Link? I believe that Nick Williams makes one.

 

Because I have had numerous issues with different throttlebodies that work fine on NNBS trucks... they would work fine up until WOT and one of the TPS sensors drops to 0%. It took me a while to diagnose this! lol

 

You will still need the x-link on the NW. To me knowledge no one makes a larger then stock TB that you can bolt up to the factory wiring on a truck that came with a 78mm stock.

 

That's what I am finding. I wonder if the motor side can be swapped?

 

The only way you can do away with the x link is if you get the TAC module off a avalanche and then the spear tech throttle body adaptor and it will work. I've done this in the past but now a days those TAC modules are very hard to get.

 

Would that be any better than the X link setup? What year Avalanche?

 

Im running a 102tb on my setup. I'll have to check where I bought it. The only thing I remember happening was when at WOT it wouldn't actually open all the way but my shop did something to correct that.

 

I'm in for details...