I have an '84 Elan with a 302 that is failing emissions for high nitrous levels. I haven't been able to solve the problem, and the the local reinspection station has charged me $350 so far for diagnostics and retests. They are suggesting another 3 hours diag (at $75/hr) to determine if the ECIII computer needs to be replaced. I'd appreciate any suggestions at this point. Thanks
Ed
Ed