tuning a vehicle

wikdsvt

wikdsvt

Club Member
Lets say you have a 94 mustang 5.0. (originally a maf car)
build the motor, stroke it to a 347, add 42lb injectors 80 or 90mm MAF, upgrade the fuel system etc...

Can you tune it with a hand held tuner?
what parameters can you tune with a hand held?
If you buy a hand held like SCT, can you call SCT and get a base tune and tweak it from there?
How do you calibrate the MAF to injectors to the fuel tables?
Is there a link on tuning?

what information datalogging do you need? A/F ratio? timing? what else?
Is it best to get A/F from the O2 sensors or having a bung welded in and adding a a'f meter gauge?
 
Pre-96 is OBD-1. They don't make any hand held tuners for anything other then OBD-2. Your only option are a custom burned chip, Anderson PMS or a stand alone. There are variations of those like a Moates quarter horse which is a chip you can tune yourself, or a tweecer which you can also tune yourself
 
And to get accurate A/F readings you would want to install a wideband sensor. And to be able to datalog you will have to have an aftermarket ECU.
 
Start here Mark; http://eectuning.org/forums/viewforum.php?f=5

Superstang has most of it correct, however you don't need an aftermarket eec to datalog. Hell, I can make live changes while it's running on the fly from my laptop to my Quarterhorse, I never even have to take it off from the J3 service port like an old style chip.

If you have any questions I'll try to answer as well. I have been tuning mine for quite some time using the Quarterhorse. The sn95 eecs are NOT my strong suit, I'll just tell you that.
 
Can the Moates datalog a wideband? Can that signal be input into the stock ECU? That was the part I was referring to not being able to datalog. Learn something new everyday! :D
 
SuperStang90 said:
Can the Moates datalog a wideband? Can that signal be input into the stock ECU? That was the part I was referring to not being able to datalog. Learn something new everyday! :D
Click to expand...

Yes. As log as your wideband has a 5v output wire on it. The moates has a spot for a 5v input.

Sent from my XT1080 using Tapatalk
 
You can either use your EGR input for that, or as I do I just have mine running to a serial port on my laptop. It logs in parallel to everything else. Puuuuuuurfect!
 
WOuld you guys convert to a A9L computer versus the 94/95 first? I never had any luck with the later, or does the tuning software take care of that?
 
i have an anderson PMS in my car. lets you do anything you want but not as much as a fast or somthing.

you could also just order a chip online, and tell them what you got and they will put a tune that should be real close on it....then just plug it into the ecu.
 
The stock ECU is still very limited on its tuning capabilities. I can see TooSlo running it with basically a stock 5.0. If you are adding Forced induction ect a standalone is the only way to go. Switching to speed density with a MAP sensor to read your boost levels and tune accordingly.
 
Billydroveit said:
WOuld you guys convert to a A9L computer versus the 94/95 first? I never had any luck with the later, or does the tuning software take care of that?
Click to expand...

The CBAZA 94-95 strats are more complex and quirky, and I really don't know them much at all like I said. The tuning software does NOT take care of it ie; make them easy to understand, there is still a learning curve. Having said that, the 94-95 eecs are more capable than the lessor GUFB eecs.

nitrouspete said:
i have an anderson PMS in my car. lets you do anything you want but not as much as a fast or somthing.

you could also just order a chip online, and tell them what you got and they will put a tune that should be real close on it....then just plug it into the ecu.
Click to expand...

PMS is expensive, and you can't "see" and adjust as much as you can with others like the tweecer and QH. Not to mention I've spoken with several racers that took them off because they were un-reliable and their cars ran better without. That's simply what they told me, no 1st hand to go off of and I'm sure just as many rave about them but these are guys looking for every last 1/100 of a second they can find.

I've done my share of online via email tuning, "real close" is not something I would be happy with seeing on my own car knowing how it takes several datalog sessions back and forth for me to see what I'm satisfied with that will ultimately go to the customer as final.

SuperStang90 said:
The stock ECU is still very limited on its tuning capabilities. I can see TooSlo running it with basically a stock 5.0. If you are adding Forced induction ect a standalone is the only way to go. Switching to speed density with a MAP sensor to read your boost levels and tune accordingly.
Click to expand...

HUH? Don't tell Bob Kurgan, he didn't get the memo about a9l's lacking. There's more than enough there to make your head spin, and more than enough to support some serious power as well.

There's an awful lot of guys running around boosted that would tend to disagree as well.
 
Last edited:
The car is the last year of the 5.0 .... 1995? it's a stroked 347, with healthly cam and hollowed out TF heads. it won't be boosted, but I'm assuming you need to upgrade the injectors and a matching MAF that is why I said either 80-90mm MAF. Can he use stock MAF?

I thought it was OBDII car.
 
Injectors are most likely in the very near future. "Matching" maf could be used, not ideal but was done for many years. You are already messing with what the eec thinks and interprets for load scaling by having a different displacement engine in where it thinks the stocker is.

Can you use the stock maf? Sure. Will it be a restriction and peg itself? Most likely from the sounds of it. The last thing you want is to peg it at 5k on your way to 6k. It'll either go lean or it'll go into limp and go retarded rich and not wind out or run for crap until you shut it off and restart it (mine).

If there is enough overlap in that cam it's going to take some finagling to get the drive ability issues in check, otherwise it's going to buck it's ass off under low load/rpm. Another contributing factor to that is the load scaling being off and with a "matching" maf, and 347 vs 302 ci with good heads/intake, it WILL be off.

I think what you're going to find is the stock eec in that isn't going to take kindly to the things you are throwing at it.

There is a couple hard-core CBAZA guys on the corral, I can't think of their usernames at this moment though.
 
Thanks Mark. Yeah its my project car and I appreciate the feedback fellas.

Of course looking for a great way to tune at the lowest cost and be able to tweak in the future. What kind of coin am I looking at for a QH programmer. As well read good things about them online.
 
The 94-95 ecu has adaptive learning. That has always been the hurdle in tuning them and the reason why in the past many just repinned the ecu and ran fox electronics. The corral has an eec tuning section and is a wealth of knowledge.
 
The fox ecu's have adaptive learning as well. They are just much more simple and have much more support.

Quarterhorse for Fords; $249
Binary Editor sofware; $100
Wideband; $156

I'm not sure how much sailorbob get's for the strategy file for that, but from what I've attempted with a stock strat, and what I've read it would behoove you to look into one of his strats.
 
i hear ya too slow, i got a good deal on mine when i got it so i jumped on it. so far shes working ok. gonna play with her more next weekend.

123.jpg
 
You must log in or register to reply here.
Back
Top