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Originally Posted by 1stGenRocks
what your talking about is a adjustable rate rising rate fuel pressure regulator. lol think of it this way
fpr = stock no adjustment set from the factory
rrfpr = stock on turbo or forced induction cars, no adjustment
afpr = allows you to adjust base fuel pressure. non rising rate.
rr afpr = adustable for base fuel pressure. rises with boost. not adjustable for boost rise rate. this is the most common type that we use. i think the aeromotive is this type.
ar rr afpr + adjustable for rate of rise and base fuel pressure
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I think you nailed it on the head. Just about all of the popular fuel pressure regulators used by DSMers are rising rate adjustable fuel pressure regulators.
Although, I do believe the stock FPR can be considered a rising rate FPR because it raises fuel pressure with boost pressure. The reason we end up having to buy new FPR like an Aeromotive is so that we can set base fuel pressure to stock if a large fuel pump is used.