Bpu
 

What does it mean when somebody says they have a BPU'd Supra?

i dont have an mk4 but bpu+basic performance upgrades. like exhaust and intake and some other things like that

You're on the right track. BPU includes the following:
- A boost gauge
- A fuel-cut elmination device (eg GReddy BCC)
- A downpipe
- A method to raise the boost (eg. 'clamp mod')

More info here:
http://www.mkiv.com/faq/faqtt.html#bpu1

i just put the things that i knew for a fast were bpu's becuase i didnt want to give any false info. but i figured i would try my hand.

Oh ok thanks. so nothing like turbos, cams and intercoolers.

Intercooler is considered as a "BPU+" mod. Cams and aftermarket turbo(s) are considered "APU".

It's actually a pretty common misunderstanding that an aftermarket exhaust is required for bpu. The truth is that it doesn't make any horsepower difference at "BPU" level. Of course, an aftermarket exhaust is a significant modification appearance-wise.

Ok thanks for clearing that up man.

OK thank you guys. Another question. Does BPU stand for basic performance upgrade? and what does APU stand for?

Yes bpu stands for "basic performance upgrades" and apu stands for "advance performance upgrades"

http://www.mkiv.com/techarticles/#apu look at that and it shoudl help you with all of this. it seems to have all the information you should need for these questions.

Here's another good link, from that same mkiv.com website:
http://www.mkiv.com/faq/faqtt.html#apu1