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01-05 Chevy Duramax 6.6L Diesel EGR Block Off Plate

This item is NOT FOR STREET, HIGHWAY, OR PUBLIC LAND OFF-ROAD USE and is intended ONLY for racing vehicles (non-street registered vehicles) operated on closed-course facilities or private owned land or racetracks. This item will not ship to California. If you purchase this item, you will be liable for proper use under ALL laws that pertain to this item under the EPA Clean Air Act Law. By purchasing this item, you further hereby AGREE TO INDEMNIFY AND HOLD HARMLESS THE RELEASEES from any loss, liability, damage or cost, including court costs and attorney's fees, that they may incur due to my participation in said activity, WHETHER CAUSED BY NEGLIGENCE OF RELEASEES or otherwise. SSM, will not be liable for any direct, indirect, incidental, consequential, or special damages, including but not limited to, damage, injury, loss of life, loss of property or equipment, loss of profits or revenue, or claims from any individual or entity arising from the use of any product.

• This EGR Blocker Plate Is For GM 2500/3500 LLY & LB7 6.6L Duramax Diesel Engines (Years: 2001, 2002, 2003, 2004, 2004.5, 2005). It easily installs on the EGR tube to shut off the "Exhaust Gas Recirculation" (EGR) flow back into the intake manifold. Plate is made from Stainless Steel. Does not fit 2006-07 Models.

• On 01-04 trucks, only California and Northeastern emission trucks and some federal emission trucks have an EGR valve and tube. Most others do not unless they were originally produced for one of the areas above. Check you truck before purchasing.

The “Blocker Plate” is just as the name implies. It is an aftermarket-machined plate made to slide into the EGR exhaust connection flange to block off the flow of emission gases to the EGR. Some believe that this results in an internally cleaner engine due to no longer re-circulating sooted exhaust gases through the engine intake to be reused during the combustion process. Some forum members report the following additional benefits when the plate is installed: A slight increase in MPG’s, a slight decrease in EGT temperatures, more engine power, quicker turbo spool-up and a slightly quieter running engine. A few members have also noted just the opposite.

Will installing the blocker plate cause DTC codes and a Service Engine Soon light?

Installing a Blocker Plate will cause the PCM to display EGR related DTC error codes due to the lack of airflow to the EGR. Forum members report that on vehicles with Federal Emission standards the SES light usually will not illuminate. On vehicles having CA and Northeast emission standards chances are the SES light will illuminate. The Override Circuit Finger Stick can be installed to prevent DTC’s and SES illumination. It is still unknown as to exactly how / if the ECM compensates when the plate is installed without the Stick. Some race programmers can modify the MAP output and disable the EGR which will in turn make the light turn off. EFI Live is one such program.

The Override Circuit "Finger Stick" is available threw us also.

Note: The 01-04 LB7 Motor Has a Vacuum Operated EGR Valve Not an Electric Valve and can not use the "Finger Stick" Override Circuit.