Tune required with longtubes???

[im4darush]

I have been told that the car will NOT run right because the O2 sensors are now further than stock. Therefore car will need to be tuned in order to run right. My longtubes are BBK. Not installed yet, and just wanted to know if this theory holds water. Makes sense, but I have to think there are people out there with long tubes and no tune. Can it be that they all deal with a car that runs like crap??

 

[2000xp8]

You can do pretty much whatever you like to a 5.0 mustang without any tune.
So no, you do not need one, nor do i recommend wasting money on it.

 

[HISSIN50]

The issue of the O2's cooling with LT's seems to be hit or miss. Forcing an OL idle to get around it is one option.

I'd be prepared to need to deal with it. If you don't, cool.

 

[90lxcoupe]

I didnt need one back when i put them on my old 90 GT, i had the same headers your running

 

[Dino Dino Bambino]

I didn't have any problems after my MAC LT's were installed nearly 3 years ago. The O2 sensors did indeed need to be moved further back but a pair of BBK harness extenders took care of that. The engine did run a tad lean with the new headers but after I corrected that by raising the fuel pressure, I had a lot more power and I was very happy with the result.

 

[seedeezy]

I have a bone stock 5.0 and long tubes on it witch is arguably a dumb combo but its what is here. I have no issues that I know of my car runs hard no mileage problems or anything detectable. The o2 are farther down stream and it makes sense the o2's get warmed up slower with long tubes but at speed like on the high way or racing or after shes up to temp, it doesn't seem to be detectable to me as a problem. What I can say for sure, is that your car won't run like **** because of longtubes, if it was running right before. And if it does, its something else.

 

[im4darush]

Why do you say dumb combo? One has to believe that a full length header should provide some kind of benefit over the tiny stock tubes.

 

[stykthyn]

on a stock motor you wont notice any difference. stock headers are fine until you start opening the heads and intake.