after changing soooo many parts on the s1 (will post the entire story with the pics tomora hopefully...) finally got it started! but the mechanic said let the engine run in just to be on the safe side because the previous guy said he had the bottom end done.

so how do you know if your engine needs running in or not?? basically the engine runs and have been told it needs 1000 miles to run it in....but have no idea if it has really been rebuilt or not...

if i floor the car will the sound change or anything?? well i foolishly did in 1st and 2nd gear and there was a loudish knocking noise coming from the engine...so worryingly quickly rang the mechanic who said that it could be the piston or somin that needs running in to the oil and it shoulf stop in a while....so 5 minutes later it stopped..and i havnt driven the car since...any ideas what that could have been??

i also need to know if the car has a low comp bottom end...apart from opening the engine up...what if i do a compression test??

also the car is running a bit rough whats the best thing to get it running nice with the fuelling etc.?? i was thinking of getting it crypto tuned but will this check the timing and fuelling etc? or is it better to get it tuned by a proper rs specialist?? anyone know one around birmingham? what do they charge?? also is it better to do this after running an engine in..?

cheers