I have a GM TBI fron a 1990 5.7L GM pickup. Nothing in the local bins seems to fit the fuel line threads on the pressure regulator.
The fuel line fittings are missing and I dont want to buy the entire fuel line from GM.
I have a two page listing of fittings (cant remember where I downloaded it from) that mentions Earls fittings and Weatherhead fittings and Saginaw. The prices are very reasonable.
BUT....it doesnt mention where one could find these. The local shops have guys that can only respond if you give them a car model and year and cannot respond at all if you have only a manufactures name and number.
I also read somewhere that there is a "Help!" kit somewhere that has both of those fittings in it. BUT the local stores Help! selection does not have this one and they dont have a catalog of the kits that are available but not stocked!
Anyone know the number of that Help! kit?
IN and OUT fuel fittings GM TBI
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
IN and OUT fuel fittings GM TBI
Jim Isbell MS I Ver 2.2 on a 1983 El Camino 229 cu in V6
If I remember right GM went to metric fittings and you can use this adapter or other brand I think there is 1,14mm and 1,16 mm fitting.
991954ERL -6 AN Male to 14mm x 1.50 Male http://www.holley.com/991954ERL.asp
991954ERL -6 AN Male to 14mm x 1.50 Male http://www.holley.com/991954ERL.asp
49 Willys panel wagon, 383stroker, Hilborn EFI conversion,msII v3 EDIS, GPIO 4L80E 
Look at this guys page
I have a holley unit. I ordered the 16 mm unit and couldn't get it to work, if it doesn't work for you take a look at this guys setup it worked for me.
If you take a look at his throttle body set up he has the fitting you need and the part numbers. http://z28boy.cz28.com/main.htm
I just ordered some for mine. Earls part #991954ERL for -6 to 14mm-1.5. It will say its for powersteering but it will still work. The other part # 991944ERL is -6 to 12 mm this is for a weber carb but it should work for the return. Mine both work I just don't have my system installed.
Hope this helps,
Colter
If you take a look at his throttle body set up he has the fitting you need and the part numbers. http://z28boy.cz28.com/main.htm
I just ordered some for mine. Earls part #991954ERL for -6 to 14mm-1.5. It will say its for powersteering but it will still work. The other part # 991944ERL is -6 to 12 mm this is for a weber carb but it should work for the return. Mine both work I just don't have my system installed.
Hope this helps,
Colter
"Sometimes I just need to pull my head out"