Gt-four A

January 30, 2006

Hey

im new to this forum and i recently purchased a 1990 st185 celica gt-FourA or wrc as it is know in other parts of the world.

My question is what is the difference between the A and normal gt4s,i know it has 25 more horespower and its very rare(never seen another one up close) but is that all.

I would also know why it has more power(have toyota just tuned it or are there special parts) and i would also like to know what is safe boost pressures to run as it only boosts 6psi standart and i would like a bit more punch.I would greatly appreciate it if someone could answer my questions and maybe give me a few tips on other ways to get more power out of the gt-fourA