Hi all.

Got a small problem with my 1993 Civic Si (EX in the US). THe car is completely stock, BTW. Between 1000-4500 no engine ping, after 4500, the engine starts to ping / knock like mad.

I use 87 octane, tried 91, no change.

Any fixes for this? Is it the timing? If so, can someone tell me how to set it properly?

Thanks.