Nitrous (NOS) Lambda Setpoint Correction

Nitrous (NOS) control lambda setpoint correction. Only positive values are allowed, i.e, only fuel enrichment is allowed, but no fuel enleanment. This is a percentage correction, so the target lambda will get enriched by this percentage. eg. - if target lambda is 0.9 & NOS lambda correction is 10% then the new corrected lambda will be = 0.818