Quote:
Originally Posted by Ricky Bobby
Is it possible to delete the EGR with a tune and still have SCR and DPF in place? I always thought you had to delete all 3 at the same time?
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Sooo tuning is like a baking a cake. You need all of the ingredients to ensure that you have good tasting cake, if you leave out any ingredients you can have a bad cake. Or in other words, the tuners all designed the deletes to work together and for maximum "reliability" I'd do all of them.
I've had experiences in other tuned cars where if you don't follow the tunner recipe you can have unexpected "issues"
However, the tuners do offer an EGR only delete with stock exhaust and emissions in place (DOC/DPF/SCR). I have this tune from JR tuning on my 335D for many months and 1000's of miles without any issues.
Early on some tuners had issues with the EGR only delete preventing the DPF from successfully performing a regen, but this issue has since been fixed.