Vortecs = no EGR?

[Captain Morgan]

hey, i was just looking at some cylinder heads today and noticed that Vortecs dont have any provision for the EGR, or at least not how it is on the older style heads, so what gives?

Does everyone just eliminate it when going to Vortecs?

 

[jwaller]

yup we pretty much have to get rid of it.

the way the new trucks do it is by using a pipe in the header to feed the system. I guess you could rig that up somehow for us but why???

 

[Sy769]

I think several have passed emissions without it. However if I ever had to I intended to run a (temporary) :wink: metal line from the exhaust manifold to the EGR passage in the upper intake.

Luckily the new house is out of the city and I won't have any emissions requirements.

 

[Captain Morgan]

I wasnt really "concerned", however I should be since NJ has second hardest emissions next to CA, but it was more like one of those, "HEY, WHAT THE...." moments so I figured I would ask since Ive never really seen it talked about here.

 

[dgoodhue]

I wasnt really "concerned", however I should be since NJ has second hardest emissions next to CA, but it was more like one of those, "HEY, WHAT THE...." moments so I figured I would ask since Ive never really seen it talked about here.

IMO

-They are never going to realize your truck heads don't have and EGR port
-They won't test your the EGR is functional.
-Since we are AWD, most place don't use awd rolls for emmision test. EGR isn't active at idle.
-Cars can pass emmision w/o EGR if the tune is good enough. The C5 Ls1 Corvette never came with EGR.

 

[QUICK STORM]

i got no egr on my truck 02 noma 4.3 vortec, and being a CA enhanced smog tech, we do functionally test the egr if it is 4wd or awd. you have to apply vacuum to the egr at idle and see if the engine stumbles or dies, if so-PASS. if not-FAIL.

 

[QUICK STORM]

remember this is only for vehicles with egr's. if it doesn't have one then you don't do it.

 

[BillC]

Maryland also does the IM240 dyno emissions test. Took me a few tries, but I tuned my Ty to pass with flying colors. I have Vortec heads, 50# injectors, A2A IC, PT 52 turbo, 3600 stall converter (way too high, but too cheap to have it restalled again), a two year old high-flow catcon and a bunch of other things. So, even with no EGR, it can be done, even with a 180 degree thermostat and premium gas.

I ended up turning the emissions program into the Valet program on my U.C. So, next time, all I have to do is cycle through to that program.