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Model specific boards => Golf mk4 => Topic started by: TETSUOXGEZ on 31 August 2014, 20:06

Title: Re: Boost Problems... Maybe N75 **UPDATE**
Post by: TETSUOXGEZ on 31 August 2014, 20:06

Hey All, I need to ask for some help.

I'm getting really strange boost when feathering the throttle in 1st & 2nd  :undecided:

Boost kicks in and raises to 0-2psi, the car pulls and then holds back, boost drops to -30vac... On hard acceleration I get 15 and then drops to 10psi holding steady... But doesn't feel like the boost is actually making a difference  :cry:

Could this be the N75 valve or the MAF... Would it be worth replacing with an upgraded valve or a manual boost controller?

Also what boost should I expect as standard

Cheers in advance

Al

Title: Re: Boost Problems... Maybe N75
Post by: xodia on 31 August 2014, 22:14

Feathering the throttle in 1st and 2nd, sounds like n249 to be honest... Have a search, loads of threads on it :)

Title: Re: Boost Problems... Maybe N75
Post by: TETSUOXGEZ on 01 September 2014, 23:05

Cheers  :cool:

when i was researching the fault this never came up, but already bought the vaclines to do the bypass.

Finger Crossed  :wink:

Title: Re: Boost Problems... Maybe N75
Post by: TETSUOXGEZ on 01 September 2014, 23:24

Ok, just so i get the basic idea of the n249 bypass

P.s. ive read the decent guide and will be following that, but this is just to get my head round the idea of the bypass

are the blow photos essentially what the bypass is doing stright from the FPR to the BV

(http://i7.photobucket.com/albums/y259/Ross20vSE/Ovni%20Leon/n249.jpg)

(http://i1184.photobucket.com/albums/z321/dawson86/n249bypass.jpg)

Title: Re: Boost Problems... Maybe N75 **UPDATE**
Post by: TETSUOXGEZ on 21 September 2014, 19:36

So a little bit of an update for you all

I have installed a Manual Boost Controller today (For Diagnostic Purposes Only)

And after a few setup runs its dial'd in.... and no jutter boost on low revs in 1st and 2nd  :cool:

So now i will be removing the MBC and upgrading the N75 and getting a re-map next month