question about gt40 and egr????

[stalkercobra89]

i'm about to install a tfs1 cam, p heads w/ comp springs, gt40 upper and lower, 24s, 255lph and a pro m. i was looking at the surface where the tb bolts up and theres no egr stuff. there are passages in the heads for it. but it dead ends in the lower intake. does this mean i can ditch the egr setup since there's no exhaust gas to recirculate as far as i can see? has anyone noticed this other than me?

 

[jrichker]

The later models of the explorer/GT 40 intake did not have the EGR passages in the upper manifold. They used an external EGR source from one of the exhaust manifolds. See http://forums.stangnet.com/showthread.php?t=551505 for the full story.

To properly emininate the EGR, you need a custom tune to shut off the EGR functions in the computer.

 

[stalkercobra89]

ok cool i've been hearing that there is actually some kind of module that i can buy that plugs into the egr connector to make the computer think the egr valve is there and functioning properly. is there any truth to this and if so can i just buy it and the elliminator plate and be on my way?

 

[Maryland Stang]

Not really. jrichker can better answer this but the computer advances the timing at part throttle which increases gas mileage. In order to do this it needs exhaust gasses to keep the engine from pinging. If you put a simulator in there instead of a functioning EGR system then the computer will advance the timing anyway and that can lead to engine damage.

I have read that simply disconnecting the EGR from the wiring harness will send a fault to the computer and it will not advance the timing.