Taking EGR out will result in higher boost pressure than normal especially in your case with free flowing 3" exhaust so YES, you'll need Dawes valve to control maximum boost and needle valve to control spool up rate (instead of ECU).Originally Posted by Steve69
You'll be wondering why you didn't do it earlier.
It can take a bit of fiddling to get it right/be happy with but its worth the effort.
Don't forget the Provent catch can/oil separator.
Cheers
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