I fitted a boost gauge on Saturday and it's saying 22psi the car had no mods apart from a pcv and n249 delete. I'm thinking that it may be mapped not sure if it's stage one or two. Is there anyway to lower the boost?
22psi is quite a bit for stage 1...
Have you scanned for any fault codes? it may have been mapped for this... one check you could try is unplugging the N75 electrically and it should sit around 7ish psi...
Ideally you need to log boost request and see whats being asked... you will be able to tell if its mapped or broken from that... block 115 in VCDS will give you requested boost vs actual boost
Normally though if there is a big deviation in boost the ECU will protect itself dumping boost (which it can't do anymore as you have done the N249 delete) and closing the throttle plate to reduce load... this should be obvious as its typically like hitting a brick wall when it comes in..
<tuffty/>
maybe someone fitted a Forge Split-R valve?
Hi hi yes it has got one there fitted by previous owner I've got it on 18 clicks. Can these cause boost problems?
Hi hi yes it has got one there fitted by previous owner I've got it on 18 clicks. Can these cause boost problems?
I had a similar issue pal in the sense as I bought what I thought was a completely standard car. After having a look over it, all I had noticed is that it had a shady decat, other than that it was completely standard hardware even the airfilter and box. After having fitted my boost gauge I realised the car was boosting to 23-24psi although it was progressive anyway the modding continued and when I finally got round to having all the stage 2 hardware fitted I took the old girl for a custom map. On the run before the mapping took place it made 267hp and 305lbft which was worrying to say the same map was running on a completely standard car other than a decat.
Just shows that some folk out there dont have the first clue about mapping