having a boost issue. may be a leak or a surge

[largetalons]

I have a 96 tsi fwd. i installed an aftermarket bov and a cold air intake. Now im having a problem that only happens in 2nd-5th gear when i am at full throttle and while im boosting at a higher pressure (usually around 3500-5000rpm). the car jerks a little and it just feels like i lost boost and the acceleration rate drops. How can i fix this? i dont know the formal term for this, otherwise i would do a lot more searching. is this a common issue? do i need to adjust something, or remove all my piping and mods?

 

[Dsmkauai]

What aftermarket bov and is it adjustable? Also did you do a boost leak test yet?

 

[95blackGsTurbo]

The BOV may either be bleeding off if it is not recirculated properly or you may have a leak where is attached to the upper intercooler pipe. Your first bet is always to do a boost leak test. Also if you are modifying your first upgrade should have been a boost gauge to monitor if it is dropping off or not. Do you have one? Are you recirculating the BOV?

 

[largetalons]

i put a 1g bov on it. so its not adjustable and i did a visual inspection of anywhere there could be a boost leak, and i didnt see any leaks, openings, rips, bent pipes, or loose hose clamps. i recently welded some lips on the ends of the bov pipe so the hoses dont slip either. is it possible that this problem could be something other than a leak?
I should put an aftermarket boost gauge on it, but im ready to give up and sell the thing because im tired of trying to fix this and getting nowhere.

also its recirculating like the factory bov was

 

[SNAKE_15]

Either way you need a boost gauge to make sure your not losing any and if not already get a wideband so you can see your air fuel ratio

 

[JOSHDIZLE]

Just because everything looks tight doesn't mean it is, build a tester and try to find leaks, visual doesn't work when looking for boost leaks.

 

[largetalons]

thats a very good point, i should get the gauges, i was thinking i should get the gauge pod for my A pillar to hold a boost gauge and a wideband.
is there anything i should check for besides boost leaks?

 

[talontorque]

when I had my 1g bov it would leak at idle where the tube attached to the bov so it is possible

 

[largetalons]

if its running lean will i need new injectors probably?

 

[tomcat5157]

definitely get the gauges. is the 1g crimped or stock?

 

[handsome_black]

Do a correct boost leak first, find your leaks and fix them accordingly, no need to start jumping into needing bigger injectors.... You mention nothing of a larger turbo, or any other mods that may require additional parts.

 

[largetalons]

no boost leaks

 

[Dsmkauai]

How high did you do the boost leak test to?