well got the rac computer on it and got these codes


17535 bank 1 mixture adaption system too rich (maf)

17959 charge pressure control solenoid valve n75 opem circuit sporadic fault (boost solenoid )

18010 voltage suply k1-30 voltage too low sporadic fault (caused by disconecting the battery )

anyone know part numbers and prices for maf and boost solenoid on a 03 210bhp lcr engine
 
also if i need a new n75 whats the best option do i get a n75 race valve or do i get a greedy profect b boost controler instead and set it to the boost required
 
could be either
could be a multitude of the sensors. N75's can cause boost problems also. O2 sesors that are on there way out cause the car to in to limp 2. I had a guy last week that had taken out a fuse mistakenly was the engine managment fuse an he thort it was the heated seats 1.
low and behold put the fuse back in and hey presto!!
vag com definatly the way forward.
traumapat is right with wo t he said about software. its very rare for a map itself to cause problems on its own, although if the cars over boosting bcoz of the way the maps written then its is possible, but more likely to be a sensor of somesort.
 
audi sell the n75. bout £40. theres alot of conflict ova which 1 to go 4.
got a load of mates tryin different 1s, 2 see which is best.
gota admit tho i uprated 1 on my last leon (180) up to a J i think, and the difference in boost was quite shocking!
i got a maf last wk from europarts it was £85 but then £35 back when you take the knackerd 1 back.
 
where should i go from here shall i replace the maf and n75 and go from there
 
i was told it was a place called hl motorsport near birmingham they do seat and vovlo remaps
 
ive not heard of thm but it doesnt mean theyre shite. id be inclined to think it was a prob with car not software.
you could do with getting some logs with vag com or going to someone thatl do you some output graphs.
you can record ur maf values thru vag com so u would then no if that wasnt rite.
you could always order the n75 and maf try them and see if 1 or the other or both fix the problem and blag them to take them back if they dont work.
 
n75 is direct from audi. dont know what there returns policy is but you cud always give it a go.
i got a bosch maf unit fron europarts. you shouldnt struggle to get 1 from a local motor factor.
 
You can also get the same N75 from Seat and VW dealerships at the same price if ones closer than the other.