EGR Butchery

[Comanche County]

OK Gents, take a look at what I've done and let the arrows fly if necessary.

 

I've had this open element air filter on for about two years. Lately the engine lost some power so I checked all the engine sensors and revisited my EGR tubing and made a few changes. I was about to order the Rusty's air tube that had the tubing Ts to attach the larger vent tubes but the shipping was more than the thing cost so instead I utilized some rural TX engineering. I blew (read wasted) money on a K+N FIPK on my ZJ 5.9 and wasn't going to spend that much on this one.

 

Take a look at the pic. I believe I have everything going where it should relative to the old stock airbox locations. I've got three tubes going into the air intake flex tube. The two large tubes: one from the valve cover, the other is the long tube that snakes around the engine compartment from the charcoal canister, the smaller tube is the discharge that originates from the output of the EGR solenoid on the inner fender.

 

BTW, when I checked all the sensors, they were all good. CTS and MAT sensor's resistance was right on. O2 sensor, same as far as I could tell. MAP sensor was 5.02 V and 1.89V. EGR vacuum was square on at 15 hg. Fuel pressure at the rail with vacuum attached was a perfect 31 psi. The CPS has to be good because it purrs like a kitten. I did replace the distributor cap and rotor, they were fried and done for. That could have been the problem, its running much better now but I need to drive it more to be certain. I still think there's a glitch somewhere.

 

I'd be interested in seeing pics of how you guys have routed these tubes with an open element filter. :cheers: