retmil

Will I see a definite improvement in throttle response and a slight horsepower gain if I install a 75mm throttle body on my 04 GT? I am thinking of the BBK. Thanks!

BlackMustang02GT

you cant just install the tb and expect a gain, youll have to do the plenum as well and the CAI, to actually feel the diff throttle response. and then when you get a tuner youll guarenteed feel the diff! or at least i did?

MoKo_04GT

yup...i agree. if you are going to get a throttle body, then you should aslo get the plenum...a lot of sites sell throttle body and plenum combos. hopefully you already have a cai, or atleast a k&n with the silencer removed.

lizzyfan

You'll feel better throttle response with the above stated setup (T/B and plenum) but you don't need a tune!

5speed

I just installed a BBK 75mm TB/C&L plenum combo and there is definately better throttle response.

retmil

Thanks for all the info! I already have the K&N CAI and will definitely go with the combo.

JT76

When i did my Accufab 75mmtb and plenum + MAC CAI i noticed a BIG difference in throttle response, nothing in the power dept tho

04MustangGT

I just removed my air silencer. I feel the gain and my power/whole shots (not power brake shots)aresoooooo muchbetter. But that's enough of that; in 6 mths I'll need new tires [&:]

What is the stock size of the throttle body?

Now I want the combo Combo # 5[8D]with gains

undecided.steve

I was going to go for the tb/plenum combo but I like the looks of the running mustang logo on the stock one
Also, I can see where the tb would make a difference, but there is really nothing to the plenum that I can see which would make
any difference??

Maybe it's smoother inside or polished giving better air flow?
I dunno?

Anyone who has looked at the stock plenum next to say a BBK or Accufab (the one I am looking at) care to comment?
What differences do you see inside and why would they make a difference in performance?

tia
Steve

04MustangGT

Can't youtaper off alittle bit of the stock plenum?