2011 duramax and up fuel pump problems
I have read a lot about fuel pump problems on 2011 and up Chevy Duramax engines. I would like everyone that has a duramax of the these years to post mileage and whether they have had problems with th...
Forum Discussion
ricatic wrote:
3. ASFAIK, there is not an adapter setup to install the much more reliable CP3 pump into a CP4 application. Besides a different configuration, fuel pressore calibrations would be way off. The CP 4 operates at a much higher pressure,almost 30% higher. This is a big component in both the increased fuel mileage of CP4 equipped vehicles...and in their much higher failure rate than the CP3.
It can be done. Several over on the Dmax forum have done CP3 swaps on their LMLs. Couple of vendors are offering kits. Yes it does require tuning. The difference in rail pressure between the CP3/CP4 is only 26K vs 29K PSI. Not sure where your getting 30%.
http://fleeceperformance.com/fuel-system/lml-cp3-conversion.html
