it been a while since i last posted only just managed to work out how to reset password. My Si has just done 100,000 miles and since then its never ran right. the main problem is when i pull away it trys to cut out unless i rev it prity high about 4k. also when im driving it revs upto around 4k revs then doesn't rev any further. is this a common problem with an easy solution?
thanks for any help

sounds like a dirty maf to me thers guids to clean it on here