Hi guy's during a spirited ride out last week my mate and I got split up I was in front so I pulled over and waited for him several minutes passed when my mate on his gen 2 howled passed so I pulled out to catch him up, gunned it up  to the rev limiter in 1st then second  then about to select 3rd when it died slightly after easing off  it seemed to run ok but since then it does it when you give it a bit of a handful I'm not sure if its fuel or electrical , has anyone else had something similar or could offer some advice

Thanks in  advance