[HighGear05]

i have a 99 mustang gt with exhaust and cold air intake....i want to get a 75mm throttle body..is it worth it will i get any hp gains

[racin366]

GEARS!!!! After that do a tuner, subframes, and then maybe start thinking about some intake parts, but they won't gain much power, the heads are the restriction, in the intake system. For now I'd do the above, then think about other stuff like intake and plenum.

[supersnake730]

dont waste your money i have a 03 gt wih a 75 mm TB an plenum an it didnt do a damn thing ..note.. 05 gt an up TB's are exactly twice the size of an 86 gt 5.0...your car gets plenty of air buy a hand held tuner instead

[cement guy]

+1 on gears.get good pulleys,tuner and x-pipe if you dont have now.these were my best purchases.good luck.

[grn 00 gt]

Originally Posted by cement guy

+1 on gears.get good pulleys,tuner and x-pipe if you dont have now.these were my best purchases.good luck.

I agree, only my blower was my best purchase.

[HighGear05]

Thanks for the responses.... what do you guys think of steeda pulleys and the sct x3 tuner...and does anyone no of a pretty good tune for what i have

[grn 00 gt]

Best tune of the six I had uploaded in my car over the years is the custom JDM Engineering tune for my EXACT mods.

My vote is custom tune for your mods when you get enough that it is worth it.

[fobra559]

Skip the TB, the stock one does well with what you have currently. Gears, as many of them above mentioned, will be your next best performance mod. No doubt you will feel a difference with this mod alone.

[joker1999]

i will disagree bbk 78mm throttle body and upper plenium picked my prev 99 black gt up i could really tell in 3rd gear!!!!! it would haul ass!!

[Dave99GT]

I thought anything over 70mm TB is a waste if you aren't forced induction... That is what a lot of people have said since I have been in this forum and researched a lot. 75mm and 78mm TB are for forced induction applications. But I dunno that is just what I have read. But gears is what usually people buy and love. and also a tune as well.

[fobra559]

Originally Posted by Dave99GT

I thought anything over 70mm TB is a waste if you aren't forced induction... That is what a lot of people have said since I have been in this forum and researched a lot. 75mm and 78mm TB are for forced induction applications. But I dunno that is just what I have read. But gears is what usually people buy and love. and also a tune as well.

It just creates a more exaggerated TB response. I will put my 75mm TB to good use soon when I get my Vortech kit in

[THEFURYV8]

I have a 70mm on mine i like it a lot i noticed a lot of throttle response after the install wouldnt go 75mm unless you are supercharged