problems dont walk alone...

[prj]

Foot half down and already 1 bar boost?
There is your problem

Please undo whatever you did to your wastegate and make sure N75 is connected properly.
Seems like you have simply boost cut... you should never have 1 bar boost with half down throttle.

What software is in your ECU? Standard? chipped?

[kirvis]

just like above 2.0 cant tell you whats it like with the food down as it just starts misfiring.

[s2_bo]

You have a digital boost gauge on the auto check in the dash. Just look at that and see what its reading when you put your foot down and it starts to bog down.

[kirvis]

well with the pedal pressed half way the standard boost gauge shows 2.0

[prj]

With a boost gauge.
If when it happens your boost goes to 0.4 bar (1.4 bar absolute pressure), then you have fuel cut.

This is only the case if wastegate has not been tampered with though.

[kirvis]

Are you 100% sure it is misfire and not boost or fuel cut?

i dont think its a fuel cut as im running LPG as well and on LPG its even worst. but boost hmmm... dont know... how to check it?

[prj]

Are you 100% sure it is misfire and not boost or fuel cut?

[kirvis]

My UrS6 started getting a vibration at speed ended up being an outer front cv on the drivers side from too many hard turns on sprint courses.

Missfire also check for fouled plugs, poor spray pattern on injectors, and the one that catches most people out is have a look at the MAF. Where the thin wires are sometimes one of them lets go ever so slightly and looses contact when a large quantity of air suddenly has to go past it. i.e. when you put your foot down. Real common problem on these cars often misdiagnosed for something else.

thats the list i have changed so far to sort it:
*lambda sensor
*sparks
*injectors
*MAF
*N75 valve
*map sensor
*coil pack
so i dont know what else can i do about it...
to sort the vibration i bought a rear diff mount and bushes today, so hopefully will fit them on sunday along with the prop shaft bearing an d will see is that going to change

[istoo]

My UrS6 started getting a vibration at speed ended up being an outer front cv on the drivers side from too many hard turns on sprint courses.

sprinting in a urS6! got any photos watching something that big sprint would raise a smile.

Concur on the MAF.

[JP]

My UrS6 started getting a vibration at speed ended up being an outer front cv on the drivers side from too many hard turns on sprint courses.

Missfire also check for fouled plugs, poor spray pattern on injectors, and the one that catches most people out is have a look at the MAF. Where the thin wires are sometimes one of them lets go ever so slightly and looses contact when a large quantity of air suddenly has to go past it. i.e. when you put your foot down. Real common problem on these cars often misdiagnosed for something else.

[kirvis]

if its any consolation Kirvis I have one the same age and its been a total money pit as well. fix one thing and two others break. on the flip side when its going it really is an awesoem car!

well thats the only thing thats keeping me away from burning it

[istoo]

if its any consolation Kirvis I have one the same age and its been a total money pit as well. fix one thing and two others break. on the flip side when its going it really is an awesoem car!

[bernsaudi]

My earth goes to the nearside under and past the throttle body and finishes on the inlet manifold, if its loose the car will usually run until you give it a bit of throttle then run like a bog of the proverbial

[kirvis]

Prop centre bearing......
prop coming loose.....
take the centre heat sheild off and have a look, might be lucky!
Killed mine after being on the ring.
Loose ignition amp wire....
bad earth to coils..

where is that wire located?
and the earth is that red cable that bolts on the head?

[bernsaudi]

Prop centre bearing......
prop coming loose.....
take the centre heat sheild off and have a look, might be lucky!
Killed mine after being on the ring.
Loose ignition amp wire....
bad earth to coils..