exhaust manifold hole

DomWoo · Post by **DomWoo** » Tue Oct 12, 2004 10:38 pm

what is that little hole about 1/2" round next to cylinder 4 when you take off the manifold?? 1.6l

damian007vk · Post by **damian007vk** » Wed Oct 13, 2004 1:01 am

it is what feeds the exhaust gases to your EGR valve.

DomWoo · Post by **DomWoo** » Wed Oct 13, 2004 2:11 am

what happens when you plug it up??

GsiTurbo · Post by **GsiTurbo** » Wed Oct 13, 2004 4:53 am

You will get poor emissions results before the engine warms up. It basically re-runs part of your exhaust fumes to for re-burning and smoother cold starting.

Eleven · Post by **Eleven** » Wed Oct 13, 2004 6:32 pm

What I did was went into the ECU and basically made an override. This way, I can disable the EGR, but still have it on for cold mornings, emmissions tests ect. Ill let you know how it works this weekend once I get the Head back and the engine re asembled.