RECIRC - BAD FOR ENGINE
29 November 2004, 01:02 PM
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RECIRC - BAD FOR ENGINE
After running around with a vta on for a few months I fancied a change so fitted the standard recirc. Soon after any time i give it WOT the KL would do its Blackpool routine and was only holding 1.2 bar instead of the 1.4 its mapped for. After posting it was put down to:- bad optimax batch, spark plugs, fuel pump, maf. I used a few tanks of fuel from a different garages, fitted new plugs (which wasn't as bad of a job as I thought it might of been). Then swapped the standard for a forge recirc, got all of me boost back and no activity on the KL (but checked it was still working) thank **** for the KL!
Is the standard recirc not suitable for increased boost pressure?
pressuming it was leaking am I right in thinking that in vacume it would run lean but on boost it would run rich. So when you first press the accelarator to the floor it would be briefly lean on boost which would cause the det before going rich? anywhere near?
cheers Stevie
Is the standard recirc not suitable for increased boost pressure?
pressuming it was leaking am I right in thinking that in vacume it would run lean but on boost it would run rich. So when you first press the accelarator to the floor it would be briefly lean on boost which would cause the det before going rich? anywhere near?
cheers Stevie
29 November 2004, 01:10 PM
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isnt it that your car was mappoed for a vta WRT air flow meter?
you then change back to recirc and afm values are all out.
hence car not happy.
I think upon a search you will find that all evidence points to recirc being better for your car and vta causing problems (eg idle issues).
you have mapped your way around this but it means your stuck until you can change the map to the new afm values.
you then change back to recirc and afm values are all out.
hence car not happy.
I think upon a search you will find that all evidence points to recirc being better for your car and vta causing problems (eg idle issues).
you have mapped your way around this but it means your stuck until you can change the map to the new afm values.
29 November 2004, 01:24 PM
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Originally Posted by Peanuts
isnt it that your car was mappoed for a vta WRT air flow meter?]
yeah it was mapped with a vta on but Bob Rawle said put a recirc on - good enough for me.
[you then change back to recirc and afm values are all out.
hence car not happy.]
since the car has been mapped i've swapped from vta /recirc a few times with no probs.
[I think upon a search you will find that all evidence points to recirc being better for your car and vta causing problems (eg idle issues).
you have mapped your way around this but it means your stuck until you can change the map to the new afm values.]
yeah it was mapped with a vta on but Bob Rawle said put a recirc on - good enough for me.
[you then change back to recirc and afm values are all out.
hence car not happy.]
since the car has been mapped i've swapped from vta /recirc a few times with no probs.
[I think upon a search you will find that all evidence points to recirc being better for your car and vta causing problems (eg idle issues).
you have mapped your way around this but it means your stuck until you can change the map to the new afm values.]
When I took off the standard recirc I replaced it with a forge recirc
stevie
Last edited by stevie boy; 29 November 2004 at 01:28 PM.
29 November 2004, 01:31 PM
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It has been known for the OE recirc to leak past 1.2 bar.
However I read your first post and also thought you had your car mapped to suit a VTA. If so any recirc would lean up the AFR if its dumped post MAF.
However I read your first post and also thought you had your car mapped to suit a VTA. If so any recirc would lean up the AFR if its dumped post MAF.
29 November 2004, 02:43 PM
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After running around with a vta on for a few months I fancied a change so fitted the standard recirc
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