N75J valve????

[MIkey kc]

Hi,
im thinking of getting an N75 valve J ive done a search on it and i cant really get a good opinion on it, some say its good some say its rubbish? with the spec of my car do you think i would benifit from this valve or should i save my money and keep the standard one!

Also read they have to be fitted the other way????

Also how much would a J cost from a dealer, you can pick them up of the bay for around £50

thanks in advance

 

[tarzan]

i have the j or h valve.hade 0,8bar with f and hitting 1,2-1,4bar.did get my car in limp mode some times but i fitted a boostcontroler and now hitting 1bar.as i just have a remap.the presure comes harder from 0,5bar on mine.mine valv is fitted like f valve.its no partnumber on mine and its brown.you just have to try it and see if it works.on someone it will not work.

 

[MIkey kc]

o right thanks for the info tarzan, think i might give the j ago, just wondered what other people with m3 were running coz when i searched all i could find what them fitted to LCR

 

[MIkey kc]

Anyone else???

 

[Rocky Rocastle]

my crap contribution to the thread mike is your right and they do go on the other way. Like Tarzan said they seem a bit hit and miss. I remember when i was having those boost issues i was looking at one and doing searches on here but was tending to find the same answers as you, some work some dont, nout definate so decided against it. Didnt know whether it was worth it as i thought it may of been one of those small things that just causes more probs in the long run. Advantage is for you though if it does go to pot i suppose you can easily rectify it

 

[cus]

i think we just need to know the difference between the j and h valve.

i'm sure one increases boost, and the other makes the boost last longer? or soemthing like that!

 

[SeatR]

what valve is on the aqx engine for stock?

 

[Cupra20]

what valve is on the aqx engine for stock?

N75F i remember correctly mate

 

[SeatR]

okey thnx mate, so is there anything to gain for me to fit a J or H valve instead? on nearly stock engine, only re-mapped.

Now loading around 10psi I think.

 

[SeatR]

I just looked at the vwvortex forum and think the H valve gives a higher peak boost
And the J valve gives a smoother boost longer out the register.

 

[MIkey kc]

I just looked at the vwvortex forum and think the H valve gives a higher peak boost
And the J valve gives a smoother boost longer out the register.

Yeah i have read the same

 

[MIkey kc]

my crap contribution to the thread mike is your right and they do go on the other way. Like Tarzan said they seem a bit hit and miss. I remember when i was having those boost issues i was looking at one and doing searches on here but was tending to find the same answers as you, some work some dont, nout definate so decided against it. Didnt know whether it was worth it as i thought it may of been one of those small things that just causes more probs in the long run. Advantage is for you though if it does go to pot i suppose you can easily rectify it

Yeah your right ive taken the plunge and i get a new n75j tomorrow so i will post up what its like after ive fitted it. if i fit it right, its got to go upside down lol god knows

 

[acidstrato]

hit or miss, personally i say miss

tried a J and it changed jack ****

i advise going in with an open mind but dont let your head become clouded by judgement and then come on here saying its amazing and you got some much more boost like people do with the n249 valve bypass

 

[MIkey kc]

lol i wont, if the boost gauge reads more then it works simple!

 

[cus]

really interested in the J valve, wouldn't mind the H, but just have a feeling that it will cause limp mode. want to play it safe

 

[MIkey kc]

Well i fitted my N75J valve today!!!

The thing i found with it is that you dont fit it the other way round because it doesnt work. I fitted it the same way my old one came off but the valve is different in looks if you put it side by side with the standard C valve. The J valve is built facing the other way.

Anyway the car boosts fine with no surging or flat spots like before. I couldn't test it that well because it was wet and just spinning up but when i put my foot down it 5th underload at around 50mph, it peaks to 24psi, its never gone over 20psi before so i was please and it held more boost for longer aswel. No limp mode at the mo ether so im happy and will be keeping the J

Hope this sheds abit more light for people

 

[tarzan]

Well i fitted my N75J valve today!!!

The thing i found with it is that you dont fit it the other way round because it doesnt work. I fitted it the same way my old one came off but the valve is different in looks if you put it side by side with the standard C valve. The J valve is built facing the other way.

Anyway the car boosts fine with no surging or flat spots like before. I couldn't test it that well because it was wet and just spinning up but when i put my foot down it 5th underload at around 50mph, it peaks to 24psi, its never gone over 20psi before so i was please and it held more boost for longer aswel. No limp mode at the mo ether so im happy and will be keeping the J

Hope this sheds abit more light for people

nice.took to months and when its cold i got limpmode but think i have the h valve,tell us hove it developes.

 

[MIkey kc]

Yeah i will do

 

[rogers]

where did u buy the j valve from im undiced wot one to have or weather to bother at all!!

 

[MIkey kc]

i bought it from audi it cost me £44

if you decide you want one let me no and i will route the part number out