what controls the boost on a agu?

[jamie1989]

Ohh I dunno what the apr recirc valve's are like but id buy a forge 007p. They are proven to be the best money can buy for the 1.8t and can be had pretty cheap in the ad's so defo worth changing for.

[dan2252]

I've got a dump valve so I could try that do you think ? As it ran fine on that agers ago but after joining here I noticed people saying to remove them, it's plunmed into the fbr aswell mate with all new proper vacuum pipe too the rocker pipe  the 90 degree pipe you was onabout I've just replaced with a new genuine pipe, i had a idea earlier the noise in getting could that be the waste gate opening? When it shouldn't be, it's strange to be honest I had a new down pipe fitted 2.5 inch same as the old one but a day after that I had boost issues I've looked at the down pipe it looks ok there's nothing I can see around it the exhaust place could have caught

[jamie1989]

Try pre loading the actuator a little more.
I advise you to go through a tightish street and on boost listen for a loud hissing noise.
If you hear it its a boost leak. That means split pipe, dodgy dv or something like weak actuator.

[dan2252]

done as you said mate no hissing just get that same werid chatting noise at like 5000rpm with boost holding between 8-10 psi, its so werid. i mean its not slow but its just flat if that makes sense? you get a massive kick at like 3500rpm but seems to take agers to pull its way round it would pull hard right upto near the redline. tommorow i think im going to pull bumper off and go over every little bit of pipe work, also which way is to add preload on the atuator?

[Wazzzer]

Can you do some logs mate? MAF, engine load, N75 duty, coolant temp would be a good place to start

[jamie1989]

As above 

[Chris.]

Id be pushing towards a lazy maf.  But logs would confirm.

[dan2252]

Going to do some logs tommorow hopefully new temp sensor coming tommorow a genuine one hopefully that will help , just drove home from work once it warmed up I gave it full throttle it hit 20 psi twice then it's not hit it since. Must be a maf like a few of you are saying as a boost leak wouldn't be intermittent would it?

[EsSeX dAn]

make sure the n75 is plumbed in the right way round. i got in wrong on my mk2 and it did all sorts of wierd n wonderfulls

[dan2252]

I've had 2 mafs in 9 months which were all Gsf bosh ones anyone else had as much trouble? And il take a pic of the n75 make but I'm pretty sure it's correct thanks for the ideas guys want to get this golf running how it should be. What did people do before forums? Haha