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Here is what all the EGR (Exhaust Gas Recirculation) fuss is about...
An EGR System is a simple emissions reducing system specifically introduced to reduce NOx emission. The EGR system allows recirculated exhaust gas back into the inlet side of the engine. This is a continuous process and the EGR valve remains open on cruise and all the way up to just before wide open throttle. At wide open throttle (WOT) emissions are not tested and so manufacturers close the valve and allow a full shot of fresh air to allow the engine to develop max power.
Mixing hot exhaust gasses with the intake air reduces engine efficiency. The sole reason for using an intercooler is to lower the intake air temps. This makes the air more dense, so we get more air into the combustion chamber. The EGR works effectively to negate the function of the intercooler.
So, the EGR will make you use more fuel, give you less power, cause carbon build-up in the intake manifold and ultimately reduce your engine life. But it does reduce NOx emissions, so we are expected to accept it. Blocking the EGR system gives us two main benefits
1) Blocking the EGR will certainly stop the soot from the exhaust clogging up the inlet manifold.
2) When blocking the EGR port you are redirecting the exhaust gases back out via the turbo, (where it was meant to go).
The turbo now has more pressure turning the blades and the turbo will spool quicker.
There are many benefits to blocking the EGR port/pipe...
Cooler intake air temps.
Less engine oil contamination.
Cleaner engine oil means increased engine life.
Cooler exhaust temps.
No Soot in intake which keeps vacuum / boost lines clean
Increase turbo response
Stop the carbon build-up in the manifold
Only $69 inc GST for the pair
Note: EGR Removal or modification is done at your own risk. Please seek advice from your preferred qualified technicians.