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Model specific boards => Golf mk4 => Topic started by: littleg1979 on 08 August 2015, 21:43

Title: unusual boost cut/limp mode
Post by: littleg1979 on 08 August 2015, 21:43

hi guys i have a mk4 golf 1.8t

the other day driving home from work it devloped a miss fire but sorted it self out a few mins up the rd but since then its suffering from a intermitt boost cut which it cut the boost off at 1bar but few mins up the rd it will hit full boost again.... she is well modified and dose nomally run 1.8 bar though the n75 valve which its map to do .... im kinda a little conffuse to why and what its doing as there no eml on or any thing like that so any info would be great many thanks guys

Title: Re: unusual boost cut/limp mode
Post by: Dalo Harkin on 10 August 2015, 08:40

1.8 Bar is high, is it a stage 2 remap?
From what you have said, first thing I would be checking is the spark plugs.

Title: Re: unusual boost cut/limp mode
Post by: Wazzzer on 10 August 2015, 18:16

If it's an AGU you won't get an EML light. Do some logs to see when it's happening and see what the MAF and N75 are up to. If it's not an AGU you can log the requested vs actual boost levels too