The goal for Spec E30 is to create high levels of competition among similarly prepared BMW E30 3 Series cars at a reasonable cost.
[1] It has been called "the next big thing" in club-level racing by Grassroots Motorsports Magazine.
As a "specified" class, the rules allow for a limited number of modifications, predominantly involving required suspension parts.
And even then, there is now a reward weight system that is used based on the actual output from a sanctioned dynamometer (maximum class allowed is 162.9).
As well, a model dyno plot is used to compare all competitors engine output for distinct anomalies.