Sorry if this is a repost. My question is, if you could graph fuel pressure vs vacuum, would a SARD and OEM have similar slopes in there graphs or does the SARD raise fp at a faster rate given the same vacuum signal? Hope that makes sense, I've been thinking of a way to ask this ? This is for a 4th gen if that matters. Thanks.

 

I believe the raising rate is 1:1. Now, if you buy a Vortech Super FMU. You can change the slope. But it's a big jump like 5:1 and not minor like 1.2:1

 

i believe they all are very close to 1:1

 

Oh..for fine adjustment...you are better off with a SAFC. Mechanical means of changing FP is not very precise.

 

but it is efficient.