Rumblefrog

I recently switched from my stock intake ('89 GT) to the Explorer intake, and I've decided that I'm going to freshen up a few other items as well.

Since my stock 19 lb injectors are twenty years old, I'm going to replace them. My fuel pump is ten years old, so I'm replacing that as well. I'm going to get new plug wires, new cap & rotor, new coil and new oxygen sensors.

My questions are:

1) Since I'm buying new injectors anyway, should I step up to 24 lb units and a new 24 lb calibrated MAF?

2) If I go with the 24s, do I need to change out my stock throttle body to a different size?

As I mentioned, I'm currently running stock 19 lb/hr injectors and stock MAF and throttle body. In addition, I'm using AFR 165 heads, E303 cam and 1.7 rockers.

What would you all recommend as regards my questions above?

Thanks for the help.

crusin92red5.0

yes replace all that. 24's, maf, tb, new cap, wires (taylor's IMO), and plugs.

YOu really don't need to put on new 02 sensors if the other ones are fine meaning no codes are being thrown

luckythirteen13

when you switch to 24s you need to get a maf that is calibrated for 24s. when you replace the pump, upgrade. when i had just heads and intake (stock cam), after getting a wide band i realized the stock pump didnt flow enough for the mods i have. if you have a cam as well you could use an upgrade

mjr46

first and foremost so you only have to buy stuff once, what are your performance/ end goals for the car??

Rumblefrog

This is my daily driver. It takes me to and from work, up and down sand dunes, across the desert . . . and takes great pleasure is blowing away the occasional ricer (much to their shock and embarrassment).

I don't drag race, but I do enjoy power and want to use the potential of the heads I've got.

Questions:

I'm finding a number of 70MM MAFs on Ebay, calibrated for 24 lb/hr injectors. Is this a good size to go with? If I buy one of these, do I need to go with a 70 MM throttle body?

I know it's not a Mustang - I call it a Broncstang because of the powerplant:

crusin92red5.0

yes those will work, just don't buy the knock off stuff from ebay. 70 mm is the way to go on the TB, i went 75mm becuase i got a hella of a deal. 65 or 70 though, most go with 70mm

302army187

you will see a good jump in power from the injectors, MAF, and throttle body.


i recommend a 70mm throttle body, and port match it to your intake.


most ppl go a tad bit bigger MAF then there throttle body, so a 73mm-75mm is the normal thing to do.

good luck, nice Bronco, i have a 1996 5.0 bronco.