Ive never been convinced about TBs making a worthwhile response gain on a turbo car.

It DEFFO doesnt increase response in the way MOST people view turbo cars response, as in turbo lag and boost threshold, as it dont affect that at all.

Ive owned a couple of turbo cars on TBs (inc current one), and driven god knows how many more, and TBH ive not noticed anything that made me think "yep, thats the throttles" barring inlet manifold leaks and over complicated pipework

FAR more important things to improve response and performance than that, its a placebo to most people, or just something to try and show off about at meets/shows/forums/features.

IF all else was perfectly optimised, then yeah, why not if you want perfection (WRC cars for example), but it cracks me up when you see these cars having many hundreds or thousands spent to run TBs and a turbo, but have some right crappy bits on them that would make the car 10 times better with a single throttle and that turbo or whatever replaced with a better one.

People seem to forget the MAIN reason they so good on n/a cars is the manifold and bodies can give unrestricted airflow for peak POWER, and that issue is totally and utterly irrelivant on a turbo car.