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J7USS, I just went for the standard N75 in the end (058906283F), got it ordered from VAG PARTS.... I experienced the same when i started the car for the first time with the new N75, the engine seemed a little unsettled for a few seconds.. However......as soon as i pulled off for the first...

I had all my bits done on Friday and what can I say, my car has been transformed....!! There is constant surge of power/boost right the way up the revs. The car doesnt hold back anymore. I am not sure which bit did the trick but a combination of the control valve, N75 valve and higher PSI...

I had a very annoying rattle also from the rear passenger side. Quite noticeable when driving over speed humps/potholes, even when driving at motorway speeds. For ages i couldnt work it out. Then one day when i was shutting the boot i heard a similar rattle from the outside the car. After a...

Theres a couple of things i am having done tomorrow. I need a new change control valve as one of nozzles have broken so theres a vacum hose which is not connected to anything. At the same time i need to replace another vacum hose which runs from top of the cylinder head to somewhere near the...

I am going to change my N75 valve. Where is it located? anyone have any pics???

what is the ultimate difference between these three valves? are they all present in the 1.8T engine? and what are their functions? part number: 026 906 283J part number: 034 906 283J part number: 028 906 283 Thanks.

Thanks for that. I can actually hear a hissing sound (air leaking) and when you cover the hole with your finger you can feel the suction of air trying to circulate. I am gonna get the car in today to sort it. Thanks for the offer. Also need to get some other bits done too, I think my rocker...

Anybody know the part number to this vaccum hose. Its has split at the very top. Also is it safe to continue driving the car with a split vacuum hose apart from the loss of power/boost.

I am already using a forge piston diverter valve. definately compliments the remap and did improve the throttle response at the time. But even then the car lost boost and power 3000+ rpm. I drove a mates and that had power throughtout the rev range and it wasnt remapped. The J valve wont put...

I had two fault codes come up on my car today 17544 and 17964 1st is MAf related and other is N75. I have noticed the car loosing power and boost over some time now so I prob change both of these mine. Also the car just isnt running as smooth as it should. The only issue is which N75 do i get...

Driving the car yerterday and engine management light came on and logged the two following codes: 17544 17964 Manageed to clear both but 17544 re-appeared. I think it relates to the MAF sensor. Any other possibles? Thanks.

Thanks for the reply... The cambelt was changed 2 years ago at 74k by stealer (car has full audi history). However, there is no mention of the water pump being changed in the service history. So you reckon the diagnosis could be correct? There was no leak prior to today, all that...

Can anyone tell me the signs to a water pump failure..?? Today all the coolant in the car drained... Called out the AA, they filled it up with water after which it seemed alright, he connected up his gadgetry and said there is a slight loss to pressure indicating a leak....The garage (not...

Thanks again for the reply MJC. How did you determine which spring to go for? Mine has a star performance remap, i was quoted gain figures from 150bhp to 200 - 205 bhp. Which colour spring do you think I should go for? Cheers:thumbsup:

Thanks for the reply..... My car has also been remapped and I am also using the forge diverter valve. When you say higher spring pressure, is this a modification to the valve itself or is it how the valve comes as standard? as mine was just fitted as standard out of the box.

Any ideas what could be causing a boost leak in my A4 1.8T (2002). The car just deosnt seem to pull fast enough when foot is down in about 4000-5000 revs. I drove a mates 1.8T the other day and there seemed to be constant power at that rev range and he's isnt remapped either. Thanks to all...

Yeh it was working fine prior to the re-map. Its possible it could be the reader but i guess i wont know until i try another reader if I can get hold of one. If there was likely to be a serious fault I guess the car wont run smoothly? Have you had yours read following remap?

Can fault codes be read from the diagnostics port following a remap of the ECU? I have a OBDII diagnostics reader and everytime I try and connect and attempt to read any errors it come back as "Error". It makes me wonder if the remap on the ECU has altered codes and that they are unreadble...