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n75 J Fitted

Discussion in 'Leon Mk1 (2000-2006)' started by RickC, Dec 3, 2006.

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  1. RickC

    RickC BUILT NOT BOUGHT

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    i fitted the j valve the other day as i was told it would bring the boost on sooner, and help smooth things out a little, well i fitted it but the plug was the wrong way round so i put the valve horizontally and could just plug it in , i did however have to use a longer piece of pipe between the charge pipe and the bottom of the valve, but i have driven it but cant see any differences at all, have i fitted it wrong? or is the longer pipe affecting it?
     
  2. CupraSteve

    CupraSteve Full Member

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    who told you that bullshit?

    a j valve is off an audi, it may help hold the boost for a little longer thats it. you wont notice any difference
     
  3. CupraUK

    CupraUK Pushing on

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    I notice loads of difference. Its a totally different feel (I occaisionally swap it back to standard), definately holds longer. It knocks a few bhp off mine but its far more driveable.

    Its a pig to fit around the wrong way, I did mine wrong to begin with because I could not believe that you had to stretch the cables like that, but you do.
     
  4. cordobabrendy

    cordobabrendy FOOORRREEE!

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    load of balls fellas, ive tried them and on the road theres no difference, even on a standard car never mind a remap set to run a standard f variant.
     
  5. CupraUK

    CupraUK Pushing on

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    I'm imagining it then

    PS: when I fitted it around the wrong way I did not notice any difference
     
  6. cordobabrendy

    cordobabrendy FOOORRREEE!

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    searchy mate, ive ran a few n75's head to head on the RR, j didnt come out the best either. Id not say it if id not had experience in the matter.
     
  7. Balf2k

    Balf2k Active Member

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    Don't judge a N75 straight after fitting it. Give it at least 100 miles for the ecu to adapt fully and settle down to the changes. I swapped my LCR N75 from the F to the H, then tried the J, Definitely gives more of an initial kick with the J and seems to hold boost longer through the rev range. I also got a difference of 6 g/s more air flow with the J, over the standard F valve. I cut the N75 electric plug cable and soldered a couple more inches into the loom for it to reach the valve.
     
  8. CupraUK

    CupraUK Pushing on

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    I'm not questioning your experiences (I remember the thread), just saying that mine are a bit different. My results reflect yours on the RR, a decrease of 4bhp using the J but I find it more driveable and my best Santa Pod times have been with it (although that could just be practice kicking in)
     

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