I haven't pushed it to 1.4 bar again

Just interested to hear what could be causing it
Couldn't be the DV's could it? that's all that's been changed

 

Problem solved - probably

I climbed under the car to check the Wastgates
I could open one of them with my fingers without too much difficulty but the other one was a damn sight harder to open

I blasted them both with WD40 and worked them open and closed (and repeated this for a few times)

Next morning I went out in the car and went for a few hard pulls

The first few times I was still getting 1.4-1.5bar
Then all of a sudden under WOT at full boost it suddenly dropped down to 0.4bar

So, it as it turned out it was a sticking wastegate causing me to overboost and not a leak after all

I have changed my MAF too and am now i'm boosting 0.7bar spiking to 0.8bar

All is good again!

 

YOU ON a stock maf?

 

MAF is stock

Do you think i should change it?
Is it a problem?

 

do u have a new one ? just making sure casue I rememember you saying that you were waiting for a replacement....

 

Replacement arrived today and has been fitted

Is stock ok or should I get something else?

 

as long as ur on ur current seup u have no options.... if you go up to a bigger system and the tuner runs a different maf then its part of the kit... you cant jsut install any maf and expect a car to run well...
if ur on a stock airbox you should be fine...

 

Cool
Still using the stock box, so stock MAF it is then

 

How do you perform a presure test?

Are there different ways/techniques?