Map sensor drops to 67kpa when rpms go above 400

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MikeDTuned
MS/Extra Newbie
Posts: 29
Joined: Thu Jun 26, 2014 5:49 pm

Map sensor drops to 67kpa when rpms go above 400

Post by MikeDTuned »

Map sensor drops to 67kpa when the rpms go over 400, this happened on the stim board when no vacuume is being applied. It is also linked in with the injectors operating simultaneously untill 400rpms then switching to alternating.

If it helps, the last update i did to the board was installing a Tip 120 transistor in Q5, it seams like this issue evolved directly after this change, What did i do wrong?

Attached are the current file, and datalog from the stim board
Matt Cramer
Super MS/Extra'er
Posts: 17507
Joined: Thu Apr 16, 2009 8:08 pm

Re: Map sensor drops to 67kpa when rpms go above 400

Post by Matt Cramer »

You have set it to use a fixed MAP value for the first 5 seconds after startup - see Startup / Idle -> After Start Enrichment Settings.
Matt Cramer -1966 Dodge Dart slant six running on MS3X
MikeDTuned
MS/Extra Newbie
Posts: 29
Joined: Thu Jun 26, 2014 5:49 pm

Re: Map sensor drops to 67kpa when rpms go above 400

Post by MikeDTuned »

Thanks a bunch! still so much to learn about MS!!
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