been off for a while trying to get the car up to scratch with bits and bobs, just had a new turbo and fuel,oil and filter, injector and fuel line cleaner ect, fitted a boost gauge as well to try and diagnose this.
basically my problem is on the motorway at 4th and 5th around 3500 rpm the car losses boost and will hit limp mode, holding 10 psi of boost, dont really have allot of money to throw on map sensor maf and n75 so kinda need to get a second opinion, when i accelerate in 2nd gear form low rpm the turbo will kick in quite hard, sometimes to 28psi off boost and then drop down to about 18psi, will have no limp mode, on the motorway if im in 5th and i give it a bit of go it will spike till abut 23-24 and then drop to 19-20 and hold the boost, next minute it will hit limp mode and cut the boost. im planning on intalling a 3 bar map snesor to go with a chip, because to my knowledge the cars not been mapped, alough im thinking spiking at 2 bar is a bit high for not being chipped iv tried to log maf and map sensors with vcds if this is any help, sadly these are in 2nd or 3rd when it doesnt hit limp mode
map sensormap.jpg maf sensor maf.jpg
any help is appreciated in advanced,