Recirc question
11 January 2011, 05:47 PM
#1
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Recirc question
i was advised to get a recirc valve to replace vta valve to get rid of an idle problem i had, revs dropping before returning when coming to a stop.
the recirc has stopped this but car doesent feel the same. might be phycological but not sure.
the valve is adjustible but cant see this making a difference.
the recirc has stopped this but car doesent feel the same. might be phycological but not sure.
the valve is adjustible but cant see this making a difference.
11 January 2011, 05:59 PM
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They usually run smoother, as the MAF sensor is measureing the air you are venting to atmosphere and adding fuel to suit. Each time you change gear you end up with an over fuel momentarily with VTA
11 January 2011, 05:59 PM
#3
i was advised to get a recirc valve to replace vta valve to get rid of an idle problem i had, revs dropping before returning when coming to a stop.
the recirc has stopped this but car doesent feel the same. might be phycological but not sure.
the valve is adjustible but cant see this making a difference.
the recirc has stopped this but car doesent feel the same. might be phycological but not sure.
the valve is adjustible but cant see this making a difference.
It is now running as it was designed. As you can tell by the idle.
The placebo is strong.
11 January 2011, 06:22 PM
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i might just put up with the dropping revs cos i prefered the way it drove before.
oh what to do, what to do....
Last edited by nickscooby; 11 January 2011 at 06:25 PM.
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11 January 2011, 07:03 PM
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cheers guys,
she runs great and mapper happy with how she runs, it's just the dropping revs.
it probably is smoother but ive always had a vta on her (first mod i did) so thats just what im used to i suppose.
i think i'll keep it recirc for a while and see if i get on with it. i do miss the noise though, i guess its the 5 year old in me.
she runs great and mapper happy with how she runs, it's just the dropping revs.
it probably is smoother but ive always had a vta on her (first mod i did) so thats just what im used to i suppose.
i think i'll keep it recirc for a while and see if i get on with it. i do miss the noise though, i guess its the 5 year old in me.
Last edited by nickscooby; 11 January 2011 at 07:05 PM.
11 January 2011, 07:36 PM
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Im the same, I love the SSQV on the impreza but I think the time has come to put the O.E valve back on as im not keen on the over fuelling and little pops the VTA causes.
13 January 2011, 06:55 PM
#14
?????????????????????????
The whole purpose of mapping the car is to get the fuelling right.
With a VTA the car will be momentarily rich when the throttle is lifted for instance when you make a gear change but it is only for an instant. It does make the car more difficult to map but it should not be generally over rich if it has been mapped excepting for the instant when the BOV works.
The whole purpose of mapping the car is to get the fuelling right.
With a VTA the car will be momentarily rich when the throttle is lifted for instance when you make a gear change but it is only for an instant. It does make the car more difficult to map but it should not be generally over rich if it has been mapped excepting for the instant when the BOV works.
16 January 2011, 08:11 PM
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?????????????????????????
The whole purpose of mapping the car is to get the fuelling right.
With a VTA the car will be momentarily rich when the throttle is lifted for instance when you make a gear change but it is only for an instant. It does make the car more difficult to map but it should not be generally over rich if it has been mapped excepting for the instant when the BOV works.
The whole purpose of mapping the car is to get the fuelling right.
With a VTA the car will be momentarily rich when the throttle is lifted for instance when you make a gear change but it is only for an instant. It does make the car more difficult to map but it should not be generally over rich if it has been mapped excepting for the instant when the BOV works.
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