did it have any mods when you bought it? that is a mod some people do... Welcome to guzzle's Helper/Lift pump Web Page
so the original may not be bad, jm2c

 

Well, that may be the case. I'm gonna stick a fuel pressure gauge on it tomorrow and see. I assumed it was just rigged BC the factory pump didn't work but they both seem to work. Apparently the first owner took pretty good care of it. It has gauges and a Turbo timer, also it looks like an adjustable wastegate maybe. It has some adjustment on the boost line from the Turbo to the little pressure sensor on the passenger firewall. New to powerstrokes so I'm not sure what this is

 

its a boost limiter so if your makin more than 22 psi of boost the computer dont know about it so the engine dont defuel, with that on there id guess they probably had a tuner on it too

 

Yeah. It has a 4 position chip on it and a Turbo timer too

 

Lol yea its an extra lift pump