Volvo RWD 120-130 Forum

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Fuel map !? 120-130

uid 4846's pic
posted by  JohnMc on  Thu Apr 7 05:18 CST 2005
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last visit: Thu Oct 23 07:42 CST 2014
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I take that statement back - this morning on the way to work I did several long pulls in 4th gear from 1500 rpm, watching the A/F gague. And indeed there is a small rpm range where the intake makes a bit more noise and the A/F ratio does go quite rich - it's just lower in the band and I rarely am in it other than a brief period in 1st gear startiing off. It's from about 2500 rpm to 2800 rpm. Interesting, I hadn't noticed it before - it tend to drive in such a way as to keep the revs up a bit higher than that.

I'm guess the lower RPM range for the reversion has something to do with the cam, the intakes (I have a short DCOE manifold), the lack of velocity stacks, and perhaps even the smaller chokes? At least down there it is out of the way in terms of drivability. I guess the eventual MS'ing of it will cure that problem - it won't get a second squirt just because it goes through the TB twice. Although I guess I will have an odd wrinkle in my MAP that I will have to tune around in some manner.
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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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