A4 (B6 Platform) Discussion Discussion forum for the B6 Audi A4 produced from 2002-2005

Which N75 valve do I need?

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Old 12-27-2003, 09:10 PM
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Default Which N75 valve do I need?

I have read that both H and J work. Which one do I need? I'm chipped with neuspeed 1.5 and what is my stock model? Also is the install hard? Can someone around LA area in socal help me with the install? How much gains should I expect and how much should I pay for one? New/used? thanks
Old 12-27-2003, 09:19 PM
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stock is C, and since you already have 1.5bar, using H will probably cause limp mode
Old 12-27-2003, 09:33 PM
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what's the diff between H and J? So I should use J then?
Old 12-27-2003, 10:03 PM
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Default H is the race valve. Try the J.

imo 1.5bar chip is already giving you a 1.5bar spike, and thats pretty high.. switching N75 is one of those things that either works or it doesnt
Old 12-28-2003, 08:30 AM
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Default my abt chip went into limp mode with the J instantly....

erased the fault and now working ok.....better than stock C one.
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