Got a hiccup

[opzWE4]

I finally got the car running pretty good after the turbo, downpipe, valve spring, fuel pump install. In the last few days the car has done some strange things. When I go wide open throttle I get kind of a hiccup at about 16# of boost, that's what I have the wastegate set at. It just seems like everything stops for a split second, and of coarse I get out of the thottle. The check engine light flashs just once when it hiccups and then goes out, and I don't show a code in direct scan. A couple of days before this it threw a code 42 a couple of times, but then it went away. When it was doing this it was running fine though. I'm not sure what's going on. Any help? I'm showing no knock either.

 

[TurboDave]

What are your O2's looking like at WOT near where this happens?

Running lean enough to get lean pops??

 

[opzWE4]

O2's have been in the low 800's, as in from 810 to 830 or so at WOT. Maybe I need to go richer? Although I wasn't logging data when this happened so I don't know for sure. I just installed an XP fuel pump, it couldn't be a problem with something there could it? Anyway to test the fuel pump without pulling it out again?

 

[opzWE4]

ttt

 

[TRENT THOMPSON]

almost sounds like you have a problem with your DS connection. when this happens the car basically decides it's not going too run right and acts real funny. I have had this happen. check all of your ds connections thoroughly I would almost bet on it

 

[opzWE4]

Checked connections, added a pound of fuel pressure and it's not doing it any more.