Join Date: Nov 2005
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The egr block off plate keeps the exhaust gas from entering the "ehaust gas return" cooler. The cooler utilizes engine coolant to attempt to cool the exhaust gas before it enters the intake. This is one of the primary causes of "puking". This is very common when running hotter tunes and especially while towing heavy loads.
Run the block off plate, or get rid of the "Y" to the cooler completely. Also have whoever writes your tunes turn off the EGR also.
'04 F250 FX4, CC, SB, Zoodad, Innovative SCT XCal2, 4" MBRP, Airaid intake, 4" Superlift front with 5.5" Fabtech springs in back with stock 2" block delete, 18" predators with 35" Nitto's, Isspro gauges overhead. '00 27' Rinker Captiva Millinium, 454MPI Captains Call exhaust. '06 '33 Tahoe Transport. '03 Polaris Predator 500, K&N, WB pipe, '08 Polaris Outlaw 525 S.