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.

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

i might just put up with the dropping revs cos i prefered the way it drove before.

oh what to do, what to do....

i have a blitz dv on mine and have no problems but on my last scoob when i went back to recirc the car was better to drive and seemed a tad better in the gear change

Re-circ for me aswell. The Baileys i had on mine made the car run like a sack of ****!

I had a Baileys dump valve, i got fed up with the sound and took it off, i then realised the car run a lot smoother with the recirc.

Thanks
Sam

So you had it mapped with a vta and have now fitted a recirc of some description...


Hmmm! What should you do...

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. :)

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.

the thing is the remap had sorted the over fuelling and i love all the pops and bangs.

it's just that bloody rev problem. grrrrrr :mad:

same here


re-circ on now

Oh, my remap didnt sort the over fuelling nor the over revving, I was told the only way to stop it is to revert back to the O.E recerc.

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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.

Obviously the map has trimmed the fuelling for the modifications fitted and its running fine, I was only talking about when you lift off the throttle.

Sorry mate, you have lost me. If it is properly mapped it won't be over fuelling and it won't be over revving.

Its obviously not correctly mapped then. Ill be in touch with the well known mapper that carried it out.