Head scratcher. Help please.

I have two fault codes on my mk4 aum 1.8t.

17705 and 17535

Boost leak between turbo and throttle body and overfueling. My question is, would a boost leak cause the over fuelling? Also, the bosch dv is quite stiff to open with your finger, do you think this could bring up a code, I've blown through with it shut and it doesn't seem to leak but boost pressure is a lot higher than my lung pressure. Lol.

Any help would be great guys. I'm not enjoying my car at the moment

 

I`d sort the leak first then go from there!

 

Best way to isolate a boost leak?

 

Pressurise system with a compressor and fittings and listen for leaks

 

I've been told to check dv. Would a faulty dv show as a boost leak? It's just strange because it started not long after I put the standard one back on

 

That's why they are changed for an up rated one.

 

I was putting her back to standard to sell her but then decided to keep her. I've ordered a new forge 008 which should be here tomorrow. I hope it sorts it

 

Check for leaks under the inlet too. Common area for split pipes

 

If you have put the old DV on and its thrown a fault up then yes i would say its that

 

I'm bypassing the n249 this weekend so if there's any split vac pipes I should see them.
It didn't throw a code up straight away but not long after. Could just be coincidence but I hope it's the dv.

 

Bypassed the n249 and fitted my 008 yesterday and she's boosting much better