blue sping kit or airdog fuel pump kit

[bassmasteraj]

I thinking about getting the air dog so should I just save my money on blue spring kit

[PGreenSVT]

They are two different functions. The blue spring mod ups the fuel pressure since it is a stronger spring in the fuel pressure regulator. The Airdog is a fuel ssystem and it depends whether you go with a low pressure pump that works WITH the HFCM or with the AirdogII which replace the HFCM. The ADII has its own fpr. In order for it to work with the oem fpr you must set the fp on the ADII higher than the pressure setting of the oem fpr. This is not a geussing game. You have to have a fuel pressure gauge. If you go with an ADII you can block off the oem fuel return at the oem fpr and just use the ADII to regulate the pressure.

If you do get an AirdogII be sure to build an upgraded 10gauge wire harness for it. The factory supplied harness is insufficient and results in pump failure.

[bassmasteraj]

I plan on getting the air dog 2 that replaces everything.

[PGreenSVT]

Then make sur you read through this thread.

Fuel system, is one pump enough?

[kgbusa68]

there is also a thread on ad2 wiring might want to read it too......I know i up graded my ad2 wiring and it made a day and night difference on how it works....