did a search but couldnt find the right answers.....64 degrees outside...15,000 miles on the truck and my mods are PSP single chip, single blade T/B, 2# lower, JL ram air, Bazzani cat back, JDM electric fan and cobra water pump. My truck seens down on power and repeated WOT produced only 10psi when normal for me is around 13psi. Any suggestions? Truck also surges alittle bit on the highway cruising... Thanks for any help.

 

Could it be a clogged fuel filter or faulty plugs? How about the coil packs?

 

Definately change the plugs and fuel filter. Clean the air filter.

 

TPS needs adjustment?

 

Andy, what is TPS?

 

Throttle Position Sensor, that will cause surging at idle, don't know if it will cause problems like you describe

 

Dave

oops my bad......forgot to include the link

https://www.f150online.com/forums/sh...threadid=66431

 

just guessing but with your boost being down im thinking cloged cats or restricted intake or something along those lines.