Hi guys, just brought me a s2 rst 1990, when i go down a hill say and take my foot off the throttle she smokes real bad, only then though otherwise shes fine, also 3rd 4th and 5th gear if i put my foot down it seems like she holds back really badly, if anyone can help it will be very much appriciated, hopefully in the future i can return the help as my babies here to stay!

Im also after a lump for her running, not running, tuned or not basically i wanna build an engine but want to keep mine on the road in the meantime?

cheers guys