Did I have a souped up miata?

[miata1.6]

I had a 91 miata, my grandfather has a 90, both are 5sp. The 90 had an open diff, mine had a LSD. Mine sounded good his sounded like a lawn mower. His was in much better condition but it was way slower than mine. Is there any significant power differences between these two years?

[[yen]]

you may have had the 1.8L version compared to the 1.6L motor commonly found in older mx5s.
yes there is a significant difference between the 2, not sure exactly when the 1.8L mx5 were introduced though

[mazdatech177]

you both had the same engine.... but his crank pulley slipped, causing timing to be off

[mazdatech60]

doh!

[mazdatech60]

maybe youre a little more spry than old grandpa!