NYTMARE

I am doing a PI motor swap over the winter and wanted to make sure I have every aspect of the swap covered. I remember someone saying that I'll need to swap over the fuel rails from my NPI motor to the PI motor for my currect computer to work with the motor. Is that all I need to worry about or is there something else I am missing that I'll need to swap from my NPI to the PI motor?

While the PI motor is out, Iplan onputting in VT stg2 cams, springs, headwork, Mac LTs, K-member, 75mm TB/Plenum combo, and CAI and throwing in a 100/150 shot for ****s and giggles.

Tranny/rearend work will include a J-mod, 3800 stall and 4.10s, maybe a new girdie.

Suspension mods will include MM full lenth sfc, UPR double adjustable uca, and solid lca, Stranger 10 way adjustables shocks and struts, and I already have the 4cyl front springs and Fox GT rear springs with 295/35 BFG DRs

But anyway, if I am missing anything please let me know; wheather its for the swap or an opinion on the mods I am doing. Any helpful info will be appreciated.

Thanks

livefast1

yes you will have to switch the fuel rails as your fuel system is a return style and the pi is non return which has the fuel pressure monitoring sensor on the rail.

1fstblckgt

Would you mind sending me some money ?

amoosenamedhank

You have to use the fuel rails of the npi engine because your car is set up to run a returnable fuel system. You can't use the fuel rails off of the pi engine. There is no difference in the engine as far as the fuel rails are concerned. You can put returnable fuel rails on a pi engine and non returnable fuel lines on a npi engine.

NYTMARE

can you explain that more indepth?

amoosenamedhank

Just use the npi fuel rail on the pi engine. It's the only way it'll work.

NYTMARE

is this the only thing I need to be aware of swapping over from the NPI motor to the PI motor? After this it is a direct swap currect?

NYTMARE

Well I'm pretty excited, it was a long day, 3.5 hour drive 1 way, but I got her home, and I can't wait to get this thing torn down and begin modding the hell out of it!!

Sxynerd

Me too please...