Boost gauge seems off, anyone with explanations?

[jebusfreek666]

Ok, So for background my car is K04, revo stage 3 ECU and Uni stage 2 TCU and GFB+. Just got a newsouth boost gauge today with and APR boost tap. Today was my first day visualizing my boost. I did a couple of 0-80 runs, and while most of them seemed fine shooting up progressively to around 22psi and holding, some of them seemed kind of weird to me. This is the first boost gauge I have ever used, so maybe this is normal. But compared to some of the other videos I have seen, it doesn't seem as smooth. Please watch these 2 videos and give me some feedback.

0-80 1/2 throttle:
https://www.youtube.com/watch?v=A9cpJZK7kpc

0-80 3/4 throttle:
https://www.youtube.com/watch?v=tmgf2C1gw8w

 

[FriggenT1]

The best way to tell imo is to do a 4th gear pull from 2k-6500. It looks like either a boost leak, a bad dv, or you are maxing the amount the WG can hold, so you can get that flutter.

 

[realcyberbob]

Or run logs with Vagcom

 

[FriggenT1]

Or run logs with Vagcom

Yep, if you got it, do it

 

[BudgetPhoenix]

Are you using a restrictor in the line?

 

[jebusfreek666]

Or run logs with Vagcom

I wish I had Vagcom. I can tell you that I have no error codes or CEL.

Are you using a restrictor in the line?

No restrictor.

 

[BudgetPhoenix]

I wish I had Vagcom. I can tell you that I have no error codes or CEL.



No restrictor.

Try putting one in. My needle rapidly fluttered like that until I did. Gauge is a lot smoother now.

 

[damagi123]

Try putting one in. My needle rapidly fluttered like that until I did. Gauge is a lot smoother now.

thats good info

 

[FriggenT1]

Try putting one in. My needle rapidly fluttered like that until I did. Gauge is a lot smoother now.

I have a cheap prosport gauge with no pill and I don't get that

 

[SnailPower]

I just had the Southbend gauge installed last weekend and with Stg2. I've hit peak of around 21-22 and then it rapidly drops and holds around 16psi ish.

 

[FriggenT1]

I just had the Southbend gauge installed last weekend and with Stg2. I've hit peak of around 21-22 and then it rapidly drops and holds around 16psi ish.

I'd say for a k03 that's normal, hard to hold boost on those turbos. I peak 21ish and hold 19 to 6k.

 

[snobrdrdan]

Try putting one in. My needle rapidly fluttered like that until I did. Gauge is a lot smoother now.

I always used one too...link:
http://www.42draftdesigns.com/inline-restrictor/