I just got finished reading this thread, and i have some imput n some things..
underdrive pulleys can dyno up to 10hp on a dyno, depending on if its a mustang dyno or dyno jet...in my mitisubushi lancer ralliart i got a 5hp gain and 7tq gain on a mustang dyno which is really good for a $100 pulley...
if any of you were wondering the dyno difference b/w the two is that the mustang dyno will yeild more "realistic" numbers and a dynojet(most known and used) usally dynos at about a 10-15% increase. Dynojets are good for braggin rights
and mustangs hurt feelings
Also, I also found out that auto trannys put down higher tq numbers than man. When me and my buddy dyno our lancers (same mods) i put down about 10 more tq than he did but he had about 7 more horses than i did. So autos arnt that bad...
Anyone feel free to correct any infor that i may have got wrong...but this infor is from my experience..