Originally Posted by sol1f3l1k3
im not sure if mine is because the stock setup was modified, it looks like a two hoses were spliced together to be honest i couldnt explain it without a picture reference but, i recently put in a cold air intake so the box is gone altogether, i didnt see a black box as was described, is that all i need to upgrade? the other thing is is there anything really wrong with keeping speed density when upgrading engine parts?
here is the problem with speed density...it has preset items in it.
example at this rpm shoot this much gas, at this rpm shoot this much more or less gas.
I've heard if you put a bigger cam (as this messes with vacuum pressure) which is what I hear speed density runs off of) then it has problems. You should be able to get away with quite a few regular power adders...but when you get to cams/bigger injectors, and cylinder heads (so I have heard) is where you will run into problems. This is what I have heard, I can't really say because my speed density unit is bone stock. Have also heard with some upgrades you may need to reflash the computer or the car will never run right.
The difference between Mass air is that it calculates variable fuel calculations based off of other readings on the computer.
1990 Mustang GT with AOD transmission-quite a bit done to it. First mustang I had, & still have.
2003 Mustang GT-Total lost by a friend into a golf course. RIP GREY GHOST
2002 Dodge Ram Quad Cab 4.7liter, auto transmission, towing package
1988 Mustang GT convertible with manual transmission- BONE STOCK! New IAC (because it idled at 2500 rpm)
1990 Mustang GT Convertible with AOD transmission project car & building it for a friend