kris k

just fitted a racing manifold to my focus never heard one before are they meant to sound so ruff and when aye stop the revs die down like its goin to cut out dont know wats wrong

COCHYN

Any pictures? What's the spec of the engine you've built, as its a zetec turbo I'm guessing?

There should be a deeper sound as you've opened up the exhaust passage a lot more than standard. So think of it as if you've just made one whole exhaust without any baffles....

Try dissconnecting the battery, leaving for a while, then reconnect and allow the ECU to relearn all of the parts it has fitted to the engine. Same principal as the Focus RS really...

Focus_RS1658

When I had the manifold fitted on the FRS I noticed straightaway a raspyniss when driving slow and you could hear the tappets a lot more too

kris k

theres a smell of fuel to since fitted the manifold dont know if oil or petrol

Focus_RS1658

Maybe an airleak then or a hole in the manifold somewhere, but the smell of fuel is normal when fitting a tubular manifold and de-cat too

kris k

cant feel any air leaking from manifold or anywhere else and now my revs seem to rev to 2000 then to below 1000 when cumin to a stop and interor light flikering when still

Crowder

I was thinking an air leak. though what ecu etc does it run, imo it might well require a remap mate?

Crowds.

Focus_RS1658

That could be the idle control valve causing the revs to flutter around, but then if you have the fan on in the car and the position is set to demist the windscreen that also turns on the other fan on the radiator which makes the lights flicker and the revs to fluctuate.

what other mods have you got?
has it been chipped or remapped before?

kris k

its got bluefin

Focus_RS1658

Have you got the de-cat file on it?

kris k

dont know how do i find out

Focus_RS1658

PM Rob@SCC Performance

He is a moderator of the forum and is a superchips dealer too, so he should be able to help best mate...