mk3 throttle body

im looking for an after market throttle body for my car, but i can only find one or two and they are only 62mm. which is a 2mm upgrade. i would like to find sumthing larger bc 2 more mm just doesent cut it for the money. any help would be awesome.

oh yeah forgot to add that its a 90' supra turbo.

TB upgrades in general don't cut it for the money unless your flowing alot of air. Think about it, your turbo outlet is 2.5"-3" depending on what you have and all the IC pipes should be the same as that, so what good is a 3"-4" TB going to be. If you still want to get it then there are a few different peices you can get and a ton of big TB's for other cars, MAXX sells the 62mm bolt-on one or you could try to adapt the Q45 75mm TB. Your money is better spent else where for now though, full exhaust, IC, IC piping, anything will give way more feel and HP and response than that.

what year q45 would you use the 75mm throttle body off of. and how hard would that instalation be? also any more help from other people about larger throttle bodies would help

1-2 mm larger is a big diference if you think of it as how much more cubic feet of air can flow thru it in a minute. I don't realy know the formula but 1mm adds up very quick with over 3 liters of air + boost comming in and out 3-7000 times a minuite. But it only works on non turbo cars with turbo cars you limit how much air even gets to the motor because of turbo size. if you need to make somthing bigger get a bigger mass air flow sensor and turbo. Larger intercooler piping will not work ether because of the turbo but the stock ones are very restrictive so geting new mandrel bent metal ones does help spool time and eficiency. hope this helps