First post, and yes its a cry for help
Hi everybody I have been a silent user on here for a while finally getting up the courage to make a post as I would like to call upon the help of the many experts on here. I recently bought a URS4 having a few issues, which I will try to describe below:
The car will run fine showing and holding 2.4 bar on dash gauge and as long as the car is driven agressively all is well however as soon as you have opted to drive off boost for a little while and then accelerate it will misfire (also sounding as if the waste gate is fluttering) if you lift off and replant the miss will ease and then on a third or fourth attempt the car will rev through cleanly.
Had read several posts with similar symptoms and had felt it is an ignition fault, possibly the spark plug rating maybe too cold so I have changed them, but if anything this has made the matter very slightly worse. I am moving towards one or two other sources of the problem the first being a POS unit (as coils have not long been changed). The other thing which may make sense is the fuel filter, the car runs mostly an RS2 set up with Bosch 044 pump and may still be fitted with a stock fuel
filter?
You guy's may know about the actual set up than myself as it belonged to a forum user (Costash). But I believe the set up as follows:
ANN Engine
RS2 Cams & Exhaust manifold
K26/27 turbo
550cc injectors
cotton filter
front mounted intercooler
Stock MAF ?
Custom Map by prj
hope this all makes sense,
best regards,
Mike.
The car will run fine showing and holding 2.4 bar on dash gauge and as long as the car is driven agressively all is well however as soon as you have opted to drive off boost for a little while and then accelerate it will misfire (also sounding as if the waste gate is fluttering) if you lift off and replant the miss will ease and then on a third or fourth attempt the car will rev through cleanly.
Had read several posts with similar symptoms and had felt it is an ignition fault, possibly the spark plug rating maybe too cold so I have changed them, but if anything this has made the matter very slightly worse. I am moving towards one or two other sources of the problem the first being a POS unit (as coils have not long been changed). The other thing which may make sense is the fuel filter, the car runs mostly an RS2 set up with Bosch 044 pump and may still be fitted with a stock fuel
filter?
You guy's may know about the actual set up than myself as it belonged to a forum user (Costash). But I believe the set up as follows:
ANN Engine
RS2 Cams & Exhaust manifold
K26/27 turbo
550cc injectors
cotton filter
front mounted intercooler
Stock MAF ?
Custom Map by prj
hope this all makes sense,
best regards,
Mike.
other than to say haven't heard of this type of fault before, but while I have my own ideas, I'm looking forward to 'seeing' what it turns out to be.
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