p1128 and p1130
 

OK here we go I have a 2000 boxster and I keep getting codes p1130 and p1128 I have replaced the oil filler tube had a crack in it put in a new MAF replaced the air oil separator new gas filter checked every were for a vacuum leaks car runs just fine I clear the code
drive it for about 100 miles and the codes come back so were do look next ?
and how do I check the fuel pressure . PLEASE HELP THANKS

Had the same problem with mine a year ago...2000 base...
 

I had already changed the AOS and changing out the MAF made it run alot better. Still has a stumble when cold in the mornings sometimes...curiously it is only when the clutch pedal is pressed in. They did a smoke test to check for vaccumn leaks and did not find any. It would usually throw the codes when leaving from a stoplight. I have been wondering if there is some kind of leak in the brake/clutch setup though I am not leaking any fluid and have never had to top it off.