Hey guys, as the title states I'm looking at installing a set of cheap ebay 3VZE headers on my 89 Pickup because my stock system is rotted out and I may as well buy cheap headers over uses or new oem stuff. One question I'm hoping someone can answer is if I can run the headers while still retaining the the EGR? All though I'd like to remove the EGR I'm worried the truck will be hard to start in the really cold winter temps we get in Canada. Currently my Cold Start Injector isn't working correctly and when its below about -25c where the truck just will not start or take forever to crank over. So I'm hoping to be able to fix the issues then swap the stock manifolds out to the headers and still keep all that so the truck starts as it should on cold days. Any help is greatly appreciated and before anyone mentions the fact I should avoid the ebay quality headers I'm aware theyre not great but its better then what I've got now lol. Thanks.

 

The purpose of the EGR system is to keep you alive, by substantially reducing NOx emissions (that, on contact with water in the atmosphere, turn into Nitric Acid).

If you're worried about cold starts, perhaps you are thinking of the Cold Start Injector? Adjacent to but completely different from the EGR.

 

Ah, that makes more sense, thanks for clarifiying that so basically i can delete my egr and still keep the cold start system and have no issues? Im still learning more about how exactly the egr stuff works so I got a bit confused after reading some guys saying their trucks struggle on cold starts after deleting the egr so my mind when right to the cold start injector.

 

If you don't care about the air you (and your friends) breathe, then, yeah, I guess so.

But I should say I'm no expert on headers.

 

Should be able to. That’s my plan at least. The EGR serves for emissions purposes but I could see a benefit of the hot air being pumped through a cold motor in some really cold areas of the country. Just like an intake air heater on a diesel. But I don’t live in those places so not worried.

 

Lucky you lol, it gets cold here and worst of all they coat the roads in salt from december to april, the joys of Canada haha. But yea I'll likely try without the EGR if theres issues I guess I'll have to make the egr work eith the headers somehow.

 

That's not how the EGR works.

EGR is only active on an engine that it is at cruising RPM's and already at operating temperature.

 

So then i really have nothing to worry about if i delete it?

 

Good point. Forgot about that. Been a long day.

 

Deleting it will negatively affect tailpipe emissions at cruising speed.

It will have no effect on hot or cold starting.

 

thats the answer i was hoping, thanks alot, much appreciated.

 

Keep an update as to how the install goes please. Really curious as to any fitment issues. Drivers side should be good clearance, passenger side has the starter and I think fuel lines.

 

Important to name the maker and seller of the headers if possible.

 

will do im planning on using just the headers and making a dual exhaust off them dumping infront of both the rear wheels. Also going to header wrap them to keep some of the heat out of the engine bay and away from the starter and whatever else

 

The ones im looking at just cheap chinese ones off Aliexpress lol. If i use oem manifold gaskets and some header wrap on them they should last a while

heres the link to them
https://www.aliexpress.us/item/10050...apt=4itemAdapt

 

Adds more cost but much better to ceramic coat them than wrap

 

While that is true. being cheap china quality headers im just going to wrap them. As the coating would be more then the headers are worth lol. If they were the Doug Thorley headers then most definitely i would ceramic coat them. But considering my end goal is to swap the 3vze out for a built 383 stroker. Im not worried about it lasting forever.