so can anyone tell me if there is a speceific barometric sensor for my lightning converted 393 engine?
thanks!
thanks!
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barometric sensor ?
- Thread starter 4x4man514
- Start date
I am not 100% but I believe they are the same as the fox body mustangs.
OP
OP
Thats what I'm starting to think. I guess they are all the same
Broncobowsher
Total hack
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- Jun 4, 2002
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- 35,681
I am sure they are 100% the same. It is even the same sensor as the MAP, just a cap on the end so hopefully nobody puts a hose on it.
The Baro sensor was used in the early Mustang EEC-IV systems. Starting in '94 it was no longer used.
So I am assuming you are using one of the early Mustang based EEC-IV systems. If you have the old stuff around, I would recommend going through the computer and doing the caps as so many of those old computers have aged out the caps now. I have also heard that one of the two big names in tuners for that computer has ended production/support.
The Baro sensor was used in the early Mustang EEC-IV systems. Starting in '94 it was no longer used.
So I am assuming you are using one of the early Mustang based EEC-IV systems. If you have the old stuff around, I would recommend going through the computer and doing the caps as so many of those old computers have aged out the caps now. I have also heard that one of the two big names in tuners for that computer has ended production/support.
OP
OP
Please excuse my ignorance but what are these "caps" you are referring to?
OP
OP
Ok the more I read the dumber I get. Does anyone have a part number for what I need? It sounds like the speed density had a vacuum hose attached but the mass air didn't. So I guess I don't need the hose?
Just google or search for your exact engine for a BAP sensor.
Here is an example source for a new one:
Best to google for your exact engine/computer/year to make sure you get the right one. RU using the stock computer and programming? If you go aftermarket computer, they are built in.
Here is an example source for a new one:
Best to google for your exact engine/computer/year to make sure you get the right one. RU using the stock computer and programming? If you go aftermarket computer, they are built in.
OP
OP
I am using a stock computer. C3w1 auto. 1993 I think. Ron Francis harness and prolly a 90 model engine . Kind of a mixture but I guess I need to go by the computer?
OP
OP
I see there is a big price difference between Motorcraft and the store brand . Is it worth it to pay the extra $$$?
The computer is what’s important as it takes that data to tell your engine what to do. I might have an original one from a 90 mustang I could give you cheap but gotta double check to be sure. I’m going aftermarket computer due to the engine mods I’m doing.
If you want new, a lot of motor craft stuff like tfi modules are for sure better but for a sensor like that I can’t imagine it not being as good aftermarket. No experience on that though.
If you want new, a lot of motor craft stuff like tfi modules are for sure better but for a sensor like that I can’t imagine it not being as good aftermarket. No experience on that though.
Don't over complicate things. It really don't matter the intake or the stroke of the engine or year. You need the sensors for the ECM you plan to run. Think the C3W1 is 89-93 5.0 It has a less aggressive stock tune than the A9P. It's mass air so not sure where the speed density reference is coming from.
Tim
Tim
OP
OP
10 4 thanks guys! sounds easy enough
Broncobowsher
Total hack
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Nothing really. It was intended for a couple of things. One being that it is large enough that a tech can't put a normal vacuum hose on it and hook it to manifold vacuum. It makes the nipple too large to use as a nipple. The other is trying to keep critters from building a home inside and plugging it up.
With the computer you have, I'm going to say you will need a custom tune. That computer is expecting 19Lb injectors. If there is any performance in that 393 you will need bigger injectors. The old school (and very incorrect) hack was a 'tuned' MAF. It worked by cheating the airflow measurement that the computer gets so the injector will be about right in the fuel delivery. For a drag racer running full throttle or nothing, that works. The timing for full throttle is fixed. But for basic drivability the computer looks at airflow and figures load and adjusts timing to match. The wacky MAF doesn't match anymore, computer doesn't know load, timing is off. You throw away the part throttle benefits of EFI. This is where a proper tune works. A properly sized MAF with a known curve is used, that curve is programmed into the computer. Now the computer really knows what is happening. Program the injector size and engine displacment. You have a basic tune that works. things can be fine tuned from there.
Bowsher, what tuners are you referencing if you can say?
I know you're asking BB, but I'll give my answer in that you can't really tune one. Your options are Tweecer, and that does allow you to tune, but it can be complicated from what I've read, and then what's called Magasquirt (also Microsquirt) and there are different versions of this that replace your EEC. They tend to be pricey other than the Microsquirt but if you are doing enough mods, I would expect it to be worth it and that's the way I'm going.
I'm going with the Stinger PiMPxs, which is a Megasquirt 3 and I feel like that will work the best for me, but there are many options. Going this route, you will need to spend some time figuring out what works, but it does establish a base tune on its own at least.
Others are diyautotune, ProM and some others you can find by Googling Megasquirt.
Not sure if Bowsher was talking about something else.
I'm going with the Stinger PiMPxs, which is a Megasquirt 3 and I feel like that will work the best for me, but there are many options. Going this route, you will need to spend some time figuring out what works, but it does establish a base tune on its own at least.
Others are diyautotune, ProM and some others you can find by Googling Megasquirt.
Not sure if Bowsher was talking about something else.
OP
OP
Lol. Caps. I wasn't thinking rubber caps duhuh.
Well your right im sure. That's alot of good info . I do have a decent build on my motor and have much bigger injectors. 36 pound i think? I bought the whole efi set up off ebay many years ago. It might be really mismatched.
I don't know that much about efi but I figured I would need to get it running and then take it somewhere to get it tuned. Hopefully im not making too many backward steps.
Im all about any advice. Thanks so much guys
Well your right im sure. That's alot of good info . I do have a decent build on my motor and have much bigger injectors. 36 pound i think? I bought the whole efi set up off ebay many years ago. It might be really mismatched.
I don't know that much about efi but I figured I would need to get it running and then take it somewhere to get it tuned. Hopefully im not making too many backward steps.
Im all about any advice. Thanks so much guys
Yeah, it's a lot to think about. The problem is that your MAF is set up for 19lb injectors. As mentioned, you can just buy a larger MAF that is set up to fool the ecu and set up for whatever size injectors you have, but then you also need to keep a bunch of other stuff or buy sensor bypasses for things like the EGR if you want that gone, and little things here and there add up and then before you know it, you'll wish you'd just ponied up for a better computer. (at least that was my train of thought as I'm in the same boat you are).
