Join Date: Jan 2006
Location: central coast, california
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you have absolutely NO boost loss because of the EGR system. Anyone who wants proof of that just come see me. The EGR system operating properly will not affect power (to the average joe), boost, or anything else. The main problem with the 6.0 EGR system is EGR cooler failures. The exhaust gas, expecually in tuned trucks or trucks that tow hard a lot even with stock programming, can actually melt the solder that seals the coolant from the exhasut gas...thus causing a massive coolant leak into the Y pipe... by preventing the EGR from flowing through the cooler, you prevent cooler failures...
if you install a sneeky pipe in a 04.5 or newer truck you will probably get a check engine light (p0401) any time you run a stock tune....if you run it with a custom tune that eliminates the EGR from functioning anyway...you will have no issues and be better off in the long run....
as far as the CEL goes....i had one today on a custom tune throw a code for egr flow.....didnt do it on the high performance or tow tune...it did do it on the street tune. Tuner just suspects the file got corrupted in the email, and ive delt with this tuner before and i have no doubt they know what they are talking about...but the fact remails that on that 06 truck...it did turn the CEL on and set a P0401 with the sneeky pipe in (with an incorrect tune)...