From the numbers of the people who post there logs here namely steve copola Jared NFS etc it seems to be over 40 pounds but less then 100...
Jared for example maxed out at 330 raw and then got 405 off one board the first time he used a shirt a couple of weeks later.
Steve got 420 with a shirt and from his log i would guess that his max raw bench would be 350ish...
The above numbers are from memory but i think they are correct I apologise ahead of time if i am wrong.
I just did a search to see if this has been asked in the past and came across this statement from Irondoc.
"...I want everyone to realizesomething about equipment. People are getting 200+ pounds out of a good shirt with triple denim velcro doohickey etc. stuff. That's rigth two hundred pounds. 150 is not out of the question. That puts you Goldie at 450 -500 now, if you get the technique down..."
Ohh that reminds me, where did Jared go. How did his comp go?
What about goldberg where is his log where is he?
oh and did jared change his name to something else?