Volvo RWD 120-130 Forum

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Fuel map !? 120-130

posted by  JohnMc on  Tue Apr 5 09:01 CST 2005
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last visit: Thu Oct 23 07:42 CST 2014
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My wideband shows no such overrich rpm band occuring on my car. It has some 36mm choke DCOE 40s, a VV81 cam, and an old 4:1 header going into a pretty straight and wide open 2.25 inch system. B21 pistons, 1.6:1 roller rockers, 46/38 valves, double vavle springs, ported, etc. Under a full throttle run the mixture will remain pretty steady from 2000 rpm up to 7000 - varying mildly from about 12.5 to 14:1. Certainly no odd plunge into the +10:1 range.

Of course, that could be due to the smaller chokes and smaller exhaust - what helps it though the midrange might actually limit it in the upper rpms.

I should dyno it sometime, maybe I will after I get is fuel injected, or at least after I MSnS the ignition (I'm thinking more and more about EDIS and no distributor).
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New Product Report - Skandix (Simons) Sport Exhaust [120-130]
posted by  twombo  on Mon Apr 4 05:28 CST 2005 >


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