RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)

- Engine Management Forum (https://www.rx7club.com/engine-management-forum-37/)

- - s5 fpd (https://www.rx7club.com/engine-management-forum-37/s5-fpd-816592/)

is the s5 fpd on the primary or secondary rail? cause i ordered a primary and no fpd on it, it does look like the secondary so should i send it back or would it be of use? otherwise im looking for a new primary rail any one have one? ill pay shipping cost send me a price please

Should post this in the 2nd gen section, and I'm sure the question has been answered in there if you searched.

The pulsation dampener is on the primary rail, where the fuel feeds into the rail. If your car/engine is a JDM version, the fuel flow is reversed, so it would be on the secondary rail where the fuel enters.

You can buy new PD's from mazda, but they're a little pricey (so is an engine bay fire....) or alot of people eliminate them with a banjo bolt.

Lots of options, well documented here on the forum.