Yes, two completely different engines, that I wasn't trying to compare.
the later model 13b twin turbo's in the 3rd gen rx7 produced up to 276 hp (limited by japanese regualtions)
There were no 4 rotor street engine produced by mazda, however their 787B which won lemans (and of course was later banned) was a 4 rotor NON-turbo with 650hp.
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1988 rx7 convertible. Streetported, racing beat header and presilencer replacing all 3 catalytic converters. Atkins 6 port sleeves. K&N cone filter intake. 22mpg average, 27mpg max. Spreadsheet (updated regularly):
https://dl.dropbox.com/u/5310442/198...%20mileage.xls
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