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okay, so went back to try and log it, and it was happening so fast (or at just the right time) that the RPM's weren't dropping in the log. However, it was obvious the computer saw it because it went into ASE mode, and pig-rich for a few second. I noticed my injector pulses bounced up and down severely, coordinating with my gammae graph. I am using TPS only, but it was registering from MAPdot... I went and changed the (nonused) MAPdot begin value up to max 1000, and now I haven't had any issues for a few days.
On an unrelated note, finally got it to pass inspection!! I've been having issues with high HC and NOx. Tried all sorts of spark/fuel combos, nothing really worked that well. Rebuilt the head/valves last fall, HC problem went away, and just put in a new, smaller cat (other was only a year old, but 3" - new is 2.25") and it passed with flying colors. Yeah! />![]() 
'95 GS w/ t3/t4b
FMIC, diy piping & RFL BOV
MS2-Extra Fuel&Spark
50 lb/hr Holley injectors w/ 1:1 RRFPR
JE 8.8:1 dish w/ Hastings Rings
Eagle Rods w/ ARP bolts
ARP Head studs
Mild port/polish head
3" custom DP/cat section, 3" PIT catback
dual MBC - 12 psi / 20psi
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If it keeps occurring around 4k (and nothing past that) and ms isn’t losing sync, then it’s probably a tuning problem. Do you have a log and msq of this?
