Are the benefits of the conversion from the 78mm to the 90mm J-tube and throttle body only seen at high RPM's? Unless you're at WOT you won't be maximizing it's full potential, right? I've heard of better throttle response and lower IATs, but the HP/TQ gain is going to be at the top end correct? What about bottom end loss, or is there no bottom end loss just top end gain?

My truck rarely sees high RPMs and WOT so i'm trying to justify the cost of this upgrade versus gains. I like the sound of better throttle response and lower IATs to help with towing.

 

Hey man, hows it goin?

Use the LS2 TB and the conversion harness from torquerush.com. Joe has the 90mm J-tubes in stock check with him for your parts!

 

Hey Brian!! Thanks for your help on the phone earlier today, didn't expect you to answer the phone. I plan on getting the larger heat exchanger and 90mm J-Tube from Joe, the DrX harness, and probably the LS2 TB from eBay or something. Now i just gotta find the sealer and the O-ring

 

Joe has the o-ring, and I have it on good advisement that WCCH has a TB left with your name on it.

 

Here is a dyno graph of before/after the 90mm conversion. No other changes besides tuning.

I gained both torque and horsepower accross the board:

 

The Loctite 550 or 510 is what to get as a sealer. I can have everything else waiting for you like we talked about. GM carries the o-rings in stock just ask for one for any of the LS2 vehicles like the SSR, TrailBlazer SS, Corvette, GTO or CTSV. I think I have an o-ring in stock, I will have to check.