MOT tomorrow. To EGR or not to EGR?

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Should i chance my hand & hope the tester wont spot the bypass or refit the old dirty egr beforehand

  • Chance it

    Votes: 11 84.6%
  • Refit old egr

    Votes: 2 15.4%

  • Total voters
    13
Does the bypass look like the original EGR valve or is it completely different?
it's like the egr unit .. but without the vacuum diaphragm disc-shaped housing ..
and exhaust feed pipe ..

pic 1 .. the egr valve unit
td4egr.jpg


pic 2 .. a delete unit
egrdelete.jpg


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I'm quite keen on keeping mine standard looking. I'm actually thinking of doing a modification to the EGR valve that reduces the amount of exhaust that can pass into to their inlet. I'm thinking of turning up a restrictor plug for the exhaust inlet side of the valve that has a 6mm or 8 mm hole through it. This will still allow it to pass a small amount of exhaust gas, but stop it from gooping up the inlet tract.
The idea behind this is to stop the 2K misfire, the is only evident when the EGR is blanked.
 
A 6mm or 8 mm hole will goop up in no time.

What are the advantages of fitting an EGR bypass over simply blanking it? One is cheap and easy to do, the other more expensive and a sod to get at.
 
A 6mm or 8 mm hole will goop up in no time.

No reason for a 6mm or 8mm hole to goop up. The goop only forms due to the oil mist in the intake system. This oil mist then partially burns in the intake when the hot exhaust is admitted, forming the goopy soot.
There's no goop in the exhaust transfer pipe, so a small hole won't clog up.
 
What are the advantages of fitting an EGR bypass over simply blanking it? One is cheap and easy to do, the other more expensive and a sod to get at

Non really. Fitting a bypass does the same job as plugging the vacuum pipe to the EGR valve.
In theory the removal of the valve in the inlet "could" improve throttle response, but it's doubtful anyone would notice.

I'm going to try a restrictor, as I want to solve the 2K misfire riddle.
 
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