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Boost problems after rad hose split!???
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Old 01 May 2009, 08:54 AM   #1 (permalink)
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Boost problems after rad hose split!???


Erm, ok, heres what happened, on way home from london (to cambridgeshire) id pulled into south mimms for some munch. After leaving i got a bit further up and and on slowing to join slip road i noticed steam .

Pulled over asap, yep somethings wrong lol......got a bit further, waited, filled up water, got another 10 mins up the road, stopped, cooled, more water... got about 10 mins from home and water temp then rose to 103 (after sitting between 84 - 91 (normal for me) then 95 for some time. Anyway, i topped it up again and got it home. Ive replaced the top rad hose which was nicely split and after testing all seems great again with regards to running temps etc etc

HOWEVER.... my car will not boost over 1 bar im not sure if its boost cut or fuel cut but its buggin me. My "B" setting on my AVC-R is set to 1.10, my "A" setting is 1.3 with boost duty % upped so actual boost is 1.50 then backs off to 1.3 at higher revs (i had boost creep under load hence the adjusted %)...... this has been running sweet like this since Simon from jollygreenmonster mapped it etc.

I cant work out why now i cant boost over 1 bar ... any ideas!? anything i should check?? anything i can reset (safe / limp mode)??

I CAN rev over 4k (someone mentioned 4k to me regarding limp mode)

My impreza has the full apexi setup inc. fc hand commander + avc-r boost controller.

Thanks in advance

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Old 05 May 2009, 02:06 PM   #2 (permalink)
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Re: Boost problems after rad hose split!???

Hello mate, check your ht leads as when i had the same problem with boosting and number one ht on the ignition coil was corroded and wasnt connecting properly. Also check all the boost pipes. Does it by any chance backfire and run lumpy?
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