Open Headers?

[blazehaaze]

Im currently stationed in KS where exhaust laws are very limited, i wanted to unbolt the X and have fun one of these days but ive heard of burning valves because of backpressure, anyone have any experience with this?

 

[squeak93]

Bad idea. Might be ok on a carb mod with long tubes but your likely to cause major issue. Won't work on a fuel injected car unless you have an aftermaket puter and able to tune w/o the use of the o2's sensors.

Keep the exhaust, use free flowing mufflers and no cats. Your car and our ears will like you for it.

 

[bhuff30]

I'm not sure what you are talking about exhaust laws being very strict in Kansas. Maybe in certain cities, the local police will be unhappy (Olathe), but generally it isn't a big deal if your car is a bit loud. I've driven my 88 turbo with an open downpipe quite a bit (though it is quieter than an NA car would be).

Running open headers probably isn't a great idea. The problem is not specifically burning valves... it is cold air reaching the exhaust valve after you've turned the engine off, hence probably not a good idea with a shorty, but no problem with a turbo or long tube header. Personally, I'd HIGHLY recommend AGAINST running an open exhaust. At least run a cat or single muffler to quiet it down a bit, because a completely open exhaust will truely hurt your ears after a short driving distance, especially if it ends underneath the car. Besides, the exhaust system doesn't cost you much power. Get an offroad pipe and the total system will only rob a little bit of power, even running the stock mufflers.

I guess if you just want to have fun for the day, at least keep the X on and remove the mufflers. That will keep the hot exhaust gases from blowing on something important, like the frame. Metal properties can and do change from heat exposure.

 

[joshheat25]

Any car with open Headers sounds like ass cheeks unless Your talking about Nascar... Just put some o/r exhaust.