I suggest you get it. TPIS makes one.
It made a WORLD of difference on my 87 TA. 305 TPI, 5-speed. Very noticable difference in power. May I also strongly suggest you get yourself a liquid filled fuel pressure guage and mount it inder the hood. Then you can see the pressure you are adjusting too. I set mine for 45psi when I was 'looking for trouble'. When I was done, I would drop it to about 28lbs. I was getting over 30mpg on the highway at that pressue and I had 3.73's out back, but the car chokes to death after 4300rpm.
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"Beauty" - '00 Vert T/A M6 : 1 of 783 : Non WS6
Kooks LTR, Off-Road Y, Borla adjustable; MTI air-lid; FAST 90mm intake and TB; TA rear girdle and 3.73's, SFCs; BMR STB | Appearance Mods
"Beast" - 2017 Suburban Daily driver - Autocross - dragstrip
Whipple 2.9, Kooks Exhaust, Circle D 3k stall, 4.10s, 2"\4" drop with all the suspension goodies.
Rollin' on 24's.
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