W/ no vacuum on the FPR, you get maximum fuel pressure all the time, instead of having it lowered at idle. Could be you have marginally low fuel pressure (a pressure gauge would confirm that) or the injectors are clogged up and need the extra pressure to flow enough fuel (a good cleaning would fix that).

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code