Boost Surge???

hello tonight while driving home i noticed while in 4th and 5th gear it surges in and out during full boost i am no expert on these things. anyone have any ideas thanks.

 

mods? and when you say boost surge are you saying it spiked? or jumped from target boost to above target boost? gotta expand on the details to get a good anwser

 

i think he means compressor surge, probably because its getting cold out

 

Are you going well over 100MPH when this happens? If not, you're probably over boosting because you're going WOT at low RPM. You should downshift to a lower gear before flooring it.

 

get a boost gauge

 

2004 wrx downpipe and exhaust. Tuned at rs motors. I did 4th all the way it's weird it boosts then cuts then boosts again.

 

most likely boost cut, its because its cold out i would get the tune checked to be safe

 

Damn I just got it tuned. You rec taking it back?

 

im not saying re tune it, just have it looked at and checked over

 

Anyone want to take a look at it? I'm free this weekend

 

You are hitting boost higher than the target (what its tuned at). When that happens the wastegate will close until the boost drops below the target. This can go in a cycle. If its doing it all the time, I can adjust the comp table to drop duty during colder intake air temp.

 

Are you still on that same whiny turbo? Maybe it decided to spool better and create more boost this time. Has it been doing this since the tune?

 

im not saying re tune it, just have it looked at and checked over

 

Ya been doing since. And ya still the same turbo. When could you look at that?

 

Never heard from you after the tune. I could've fixed it that same day. Bring it over.

 

Ok sounds good your not there tomorrow are you ?

 

Yes I am

 

Ok sounds good have a good time I Gould swing by at?

 

And that whinny turbo I can only hear that when its cold out.