'02 Coupe M111 baseline Dyno
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'02 Coupe M111 baseline Dyno
Well, here are the results from the DynoJet. The shop used a exhaust probe to measure the A/F Ratio which is appearently wrong.
Max Run
Max Run
#6
Re: '02 Coupe M111 baseline Dyno
Originally posted by nukblazi
Well, here are the results from the DynoJet. The shop used a exhaust probe to measure the A/F Ratio which is appearently wrong.
Max Run
Well, here are the results from the DynoJet. The shop used a exhaust probe to measure the A/F Ratio which is appearently wrong.
Max Run
Its not so much wrong as it is inaccurate. Sampling at the tailpipe looks at spent gas that has been through the cat- which will effect its reading. Typically a MBZ cat will shift up about one full point on a DynoJet- EG: 13.7 : 1 at the tailpipe is 12.7 : 1 pre cat. Sampling before the cat will remove any doubt-
Once you do your modifications you can sample at the tailpipe again- just be sure the readings are the same or slightly richer. You are looking at the differential between stock and mod at this point.