i was wondering if a dumptube needs to be a certain length for maximum efficency. i know that if ur dumpings it in the atmosphere, the best way is back behind the engine for best performance.but what if you dump back into the exhaust. because the way my mani was made is i can make a very short dump into the exhaust, like maybe an inch of pipe, or do a 180 with a pipe for a dump back behind the engine, so what shoul i do?

 

just get it down and out of the engine bay or tie it into the downpipe...