Boost gauge acting strange on idle with ac

Ciaran WRX

Well-known member

ISDC Club Member

• Jan 9, 2014

• #1

Lads any ideas on this revs remain constant but boost varies at idle when ac on longer video first ten secs no ac and all is fine any idea what it could be related to


http://youtu.be/dfpQv0Jamzo

http://youtu.be/TQTMn7zgHNo

 

wagon dec

Member Number 257

• Jan 9, 2014

• #2

When the aircon is on there is a map in the ecu for it that opens the idle speed valve more when the ac clutch is pulled in this makes the engine increase rpm but a side affect of this is a reduction in engine vacuum that cause your issue of boost gauge fluctuating

 

BazGF8

OG Wagan

ISDC Club Member

• Jan 9, 2014

• #3

As above , nothing to worry about

 

OP

OP

Ciaran WRX

Well-known member

ISDC Club Member

• Jan 9, 2014

• #4

Cheers lads that puts my mind at rest never use the a.c so only noticed it when it was on the other day
Karma for Barry and dec

 

davelegacy

Member Number 16

• Jan 9, 2014

• #5

Normally 400 revs area

But obviously that can be adjusted by mapper

 

scoobysub

Well-known member

ISDC Club Member

• Jan 9, 2014

• #6

[move]a/c ffs :facepalm :hairdresser: :hairdresser: :hairdresser: :hairdresser: :hairdresser: :hairdresser: :hairdresser: :hairdresser: [/move]

 

davelegacy

Member Number 16

• Jan 9, 2014

• #7

Above idle ^^