302LXCOUPE

Hello,
The 92 5.0 Coupe I purchased had a 65mm BBK throttle body installed by a previous owner. There are 2 unused fittings (one facing forward and another facing backwards.) There is also a plugged off coolant line right near it.
The BBK instructions that I retrieved from their web site talk about coolant lines to be attached. Any benefit for not hooking them up?
Any help, input is greatly appreciated.
Marco

Boss_Hotrod

A cooler intake charge if the EGR is not hooked up. Otherwise it actually hurts since the exhaust gases are hotter than the coolant.

302LXCOUPE

Thanks,
I will hook them up.

capri debris

They not only keep the TB from getting too hot in the summer, but they also keep it from icing up in the winter... so like mentioned above, if you don't have the egr hooked up AND if you don't plan on driving in the winter, you can take them off. BUT if you have an egr OR you drive in the winter hook them up.

302LXCOUPE

Makes sense,
Down here in South Florida is not much chance of anything icing up, however it can easily get too hot.
Are there any benefit of removing the EGR? Any drive-ability issues. Will the EEC
throw a code if it is disconnected?
Thanks

Tony71502

It will throw a code, you can get an eliminator to plug into the harness but that will still throw a code. The only difference is the code that the eliminator puts out does not light up the check engine light.

IIRC, only way to eliminate it without codes is an aftermarket computer.

The exhaust is injected into the air intake via EGR to reduce emissions by reducing combustion chamber temps to reduce NOx. Removing the EGR isn't really necessary.

I'd say hook up the coolant lines to your aftermarket intake. It should come off of the coolant tube and go into the front port on the throttle body, then the back port should connect to a fitting on the lower intake manifold.

302LXCOUPE

Thanks a bunch. I appreciate everyone's help and input.

Boss_Hotrod

From what I can remember if you just unhook the vac line on the diaphragm the computer will delete the engine function. If you leave the sensor there and do not unhook it it will not light the CEL.