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I have been searching about returnless and return style systems on the CSVT, and am very confused. How do I know what my 1999 CSVT is, and can I run nitrous? I was reading some posts about 2000 being return and couldnt use the zex kit. Late model 1999's were also mentioned. basically, how do I know if I am returnless or not, and can I run the zex dry kit?

I am sorry to keep posting about nitrous stuff, but I swear I do lots of searching. I am getting a zex kit tomorrow and want to make sure everything is right.


Originally posted by Who the F are You?:
does your family tree not have any branches on it?


99SVT 235hp @ 6550rpm 212tq @ 5350rpm
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Look at your fuel rail. 1 fuel line is returnless, 2 is a return style.


2005 Ford F150 SuperCab FX4 1964 Chevrolet Impala SS 1998 CSVT: 354HP/328TQ @ 10 psi, now gone
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Wouldn't just looking for a fuel pressure regulator with a vaccumm line be just as easy? Would be the only thing on there like it. Simple way to ID a return style system.


95 Contour, Custom EVO bodykit, 2.0l, PNP Focus head, Stage 2 cams, Je pistons, Eagle rods, 4in1header, 2.5" header back exhaust(complete stainless), D P nitrous, ram air intake, 10mm wires, flamethrower.
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Originally posted by evocontour:
Wouldn't just looking for a fuel pressure regulator with a vaccumm line be just as easy? Would be the only thing on there like it. Simple way to ID a return style system.




actually the easiest way would be to look for the 1 or 2 fuel rails cause the FPR is kinda hard to see(if you have return style) cause it is up under the TB/UIM so it is just easier to see the rails


1999 Cougar V6 MTX SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit
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early 99's were return style. My car was built 12/3/98, and has a return style fuel rail. Later 99's and 2000's were returnless.


1999 Silver Frost SVT #609 of 2760 Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.
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thanks everybody.


Originally posted by Who the F are You?:
does your family tree not have any branches on it?


99SVT 235hp @ 6550rpm 212tq @ 5350rpm

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