I have EB's 270/430 grind... Not noisy, would probably pass emissions (if we had the requirement and I got a new EGR valve to replace my broken one).

Had to bump the idle up a hair to smooth it out... 700 was a little lopey, but 850 is smooth as silk.

"A young man who does not have what it takes to perform military service is not likely to have what it takes to make a living." - John F. Kennedy

Proud owner of an 88 Montero (with a blown engine).