Since there is so much talk about this, I thought it couldn't hurt to share another experience. I know I was trying to find out as much as I could about this subject.
After installing the 03/04 Cobra dual fuel pump setup and tank in my 04 supercharged Saleen, I started getting a nasty hesitation anytime I tried to shift fast. For a split second the car just loses all power. I didn't know what the problem was until I was finally told about the pprv delete from someone who had the same problem when he swapped in a full terminator setup in his Sn95. From what I've read, the PPRV is a valve on the sending unit that prevents fuel draining back into the tank to aid in startup. It's quite a restriction in the fuel system and when upping the horsepower, it can cause the hesitation during shifting. I'm suprised because my car doesn't quite make 360hp and I'm having this problem. I purchased the pprv delete hose (and 6 hose clamps) from AD Auto Parts: PPRV Delete Hose Kits, AD AutoParts
I chose to replace only the hose from the y fitting to the sending unit and copied this: http://www.svtperformance.com/forums/engine-tuning-214/762154-my-pprv-delete.html
Tank removed:
Did Carter make the original Cobra pumps?:
Sending Unit out in all it's glory:
Pop the line out of the little plastic clip:
Cut the line off of the y junction and sending unit hat:
The culprit:
Ready for the new hose:
You won't believe how tight this is. I got blood blisters trying to push this hose on the y connector. I used boiling water and could only get it on about half way. It finally took a heat gun to get it on this far. I'm hoping it doesn't pop off because it stretched into an oval. Time will tell:
No kinks with this hose:
You can reuse the plastic clip. Looks good as new:
After installing the 03/04 Cobra dual fuel pump setup and tank in my 04 supercharged Saleen, I started getting a nasty hesitation anytime I tried to shift fast. For a split second the car just loses all power. I didn't know what the problem was until I was finally told about the pprv delete from someone who had the same problem when he swapped in a full terminator setup in his Sn95. From what I've read, the PPRV is a valve on the sending unit that prevents fuel draining back into the tank to aid in startup. It's quite a restriction in the fuel system and when upping the horsepower, it can cause the hesitation during shifting. I'm suprised because my car doesn't quite make 360hp and I'm having this problem. I purchased the pprv delete hose (and 6 hose clamps) from AD Auto Parts: PPRV Delete Hose Kits, AD AutoParts
I chose to replace only the hose from the y fitting to the sending unit and copied this: http://www.svtperformance.com/forums/engine-tuning-214/762154-my-pprv-delete.html
Tank removed:
Did Carter make the original Cobra pumps?:
Sending Unit out in all it's glory:
Pop the line out of the little plastic clip:
Cut the line off of the y junction and sending unit hat:
The culprit:
Ready for the new hose:
You won't believe how tight this is. I got blood blisters trying to push this hose on the y connector. I used boiling water and could only get it on about half way. It finally took a heat gun to get it on this far. I'm hoping it doesn't pop off because it stretched into an oval. Time will tell:
No kinks with this hose:
You can reuse the plastic clip. Looks good as new:
