like its hitting the rev limiter!

[Cupra Ken]

I'll try and keep it short. i replaced my n75 valve last week due to fluctuating boost and it seemed to sought it out a treat my mate put it on a wideband and seemed to be fueling great too. it was ok for about a week but for the last few days its taking alot longer to start sounding a bit chocked up but when started its fine. i dont normally take it past 5000 rpm but i gave ut a bit a few nights ago and when it got to about 5 grand it seemed to hesitate then started to backfire like it was on the rev limiter and chucked out a cloud of black smoke, tried to take it past 5 grand a few times now and the same every time. sorry for the long thread just gettin the ump got to replace the clutch and flywheel this weekend along with bushes and sought the windows seemed to come all at once. i would love some pointers many thanks. ps the car is revo stage 1 de cat forge front mount no mods out of the ordinary.

 

[-=Rob=-]

Check for vag-com errors, may be a pending coilpack failure...

 

[Cupra Ken]

havn't been able to get near vag com got the lead , but mate has got the software and he is away. But we set up a fuel pressure gauge and it is leaning off by nearly a bar at high revs so im lucky it hasn't gone bang . my mate is having the fuel pump up today what a palava, i did notice the pump starting to whine a bit, has anbody had fuel pump start to pack up cheers!

 

[Robbie C]

Whats the mileage? Are you using a 4 bar FPR? They can be known to sag under load yes

 

[-=Rob=-]

Whats the mileage? Are you using a 4 bar FPR? They can be known to sag under load yes

You got me thinking now Rob, Mines 105k, 4bar stage 2, may think about upgrading. Option of LCR or Whalbro upgrade (spelling!) isn't it?

 

[Cupra Ken]

its done 114,000 so it wouldn't surprise me if it would need a new one. not running a 4 bar as im only stage 1 but still running a de cat should I put one on it . I have got everything bar a downpipe for stage 2 but I spoke to bill from badger5 and he said you loose how aggressive it is and im only on a k03 what is your thoughts stage 2 or not . cheers

 

[Robbie C]

You got me thinking now Rob, Mines 105k, 4bar stage 2, may think about upgrading. Option of LCR or Whalbro upgrade (spelling!) isn't it?

Yeah they're the main options, though an inline Walbro/Bosch pump only boosts what the standard in-tank pump provides so it shouldn't be installed to compensate for the OE pumps shortcomings.

its done 114,000 so it wouldn't surprise me if it would need a new one. not running a 4 bar as im only stage 1 but still running a de cat should I put one on it . I have got everything bar a downpipe for stage 2 but I spoke to bill from badger5 and he said you loose how aggressive it is and im only on a k03 what is your thoughts stage 2 or not . cheers

Stage 1 Revo? If so then the standard Stage 2 map is often disappointing for most, though it can be tweaked for better results.

I'd get some logs on VAG COM to see what's going on

 

[Cupra Ken]

soughted! turned the pipe inside the fuel pump was slightly flatterned so my repaced it and now no problems at all runs fine straight to the red line, not that it gets driven like it that much thanks for all your help.

 

[Cupra Ken]

Sorry didn't say it is revo stage 1 just need to find out what setting its on, it think its on the most aggresive setting because of the massive boost spike i get.