Just tried 4.2 and got a P0088 codes. Is this indicating a part that maybe going bad? What have you done to correct the problem?

 

the book says....
SYMPTOM
P0088-FUEL RAIL PRESSURE SIGNAL IS ABOVE MAX LIMIT
WHEN MONITORED
Engine running.
SET CONDITION
Fuel pressure is above a calibrated value for a calibrated amount of time.
POSSIBLE CAUSES
Fuel control actuator (FCA)
Fuel pressure sensor
Intermittent condition
might just be a fluke???
take it to stock and see if it comes back....

 

I will try that tomorrow. I did not think that the smarty raised pressure that high.

 

I dont think smarty raises RP at all does it???

 

I don't think it does either but got it as soon as the 4.2 went on.

 

I think 4.2 does pressure.

 

I'm pretty sure that 4.3 did the rail pressure.. 4.2 doesn't appear to raise rail presure (according to my gauge) but I don't have 4.3 to compare.

Chad