tune safc2

[eclipse gsx]

ok first of all i got no wideband or datalogger got no money for it, i got my safc2 and want to tune my car.
mods are
evo 560 injectors
16g turbo
afpr set to 48psi
fully built 6 bolt head ported with delta 272s
1g throttle body
full 3 inch turboback
vrsf front mount
and a stock fuel pump.
does anyone have the same setup and is willing to help me out here car runs like crap and idles with the boost gauge reading 7 vacuum.
thanks help is appreciated

 

[1996tsitalon]

I would wait an save for a wb. The reason being you have that much in your car an even if someone has the same setup.there's no way to no what your cars a/f is. You can get them used on here for around 100. That's my op

 

[Force Fed 4g63]

You won't be able to tune properly at all without a wideband, you need one asap before you do anything else.

 

[Moy]

first off you shouldn't try to tune the car if it won't even idle right. boost leak your intake system. turn down your fuel pressure and get a walbro pump, unless you want to fry your pump in short order (BFP = 48psi, most AFPR's are rising rate, meaning as manifold pressure increases, fuel pressure increases). Running too high of a pressure on the stock pump can cause cavitation in the fuel lines and deliver an inconsistent flow of fuel.

As mentioned before... you need a Wideband. I prefer the Innovate Motorsports MTX-L (very accurate and competitively priced)

Once the car is at least idling properly and you have a wideband, then you can tune. Otherwise you're taking a shot in the dark, and one day may wonder "why did my engine blow up? I tuned it, it shouldn't have detonated"

 

[FLASH1970]

As said before, there is no way to tune your car without a datalogger and a wideband. Your asking for trouble trying to tune without those. If you had a datalogger, you MIGHT be able to get a tune by leaning it out a tad bit at a time until you get knock, then add a little fuel. You have a 98 btw. Get a tactrix cable and EVOScan and run the Ceddymods for tuning. Or get a cheap datalogging cable and pay 25 for EVOScan or I think Mitsulogger is free software for datalogging using the car's ECU.

I would return your fuel pressure to stock, put stock injectors back in your car, set the 16g to 10psi of boost and leave it there until you have...

1. a better fuel pump
2. a datalogging setup
3. a wideband

Your profile says you have an air/ fuel gauge... Is it a narrowband? One more thing, get that aluminum crank pulley off your car and put a stock one on. The stock one has a rubber center that absorbs crank vibrations from combustion. Or get a Fluidampr one but those are expensive.

 

[alex209]

Nicely said

As said before, there is no way to tune your car without a datalogger and a wideband. Your asking for trouble trying to tune without those. If you had a datalogger, you MIGHT be able to get a tune by leaning it out a tad bit at a time until you get knock, then add a little fuel. You have a 98 btw. Get a tactrix cable and EVOScan and run the Ceddymods for tuning. Or get a cheap datalogging cable and pay 25 for EVOScan or I think Mitsulogger is free software for datalogging using the car's ECU.

I would return your fuel pressure to stock, put stock injectors back in your car, set the 16g to 10psi of boost and leave it there until you have...

1. a better fuel pump
2. a datalogging setup
3. a wideband

 

[Moy]

to add: for legality reasons and for the safety of yourself and other drivers, buy some dyno time. 4th gear pull (direct drive) to get a more consistent tune throughout the rpm range. tuning in any other gear, you're tuning around torque multiplication from the gear ratios inside the transmission and differential(s)

 

[ramsack]

Take off the injectors and set your fuel pressure back to stock until you get a way to see how you're tuning the car. You literally can't tune it without a wideband. Don't even try it. SAFCs are also a pathetic way to tune, and it's not even really tuning.

 

[Moy]

Manipulation is a form of tuning. Sure, you're manipulating and altering the signal from the MAF, TPS, etc to the ECU, but it's still a form of tuning.

 

[ramsack]

No, it's not tuning. You're tricking the ECU into thinking something else is going on, and controlling only one thing. Tuning is doing shit right and being able to control more aspects than just an airflow signal. Altering a MAF signal is just ghetto rigging at its best.

 

[Force Fed 4g63]

No, it's not tuning. You're tricking the ECU into thinking something else is going on, and controlling only one thing. Tuning is doing shit right and being able to control more aspects than just an airflow signal. Altering a MAF signal is just ghetto rigging at its best.

Semantics. It's a way to get the car running right.

 

[ramsack]

If you think having no control of timing by altering the airflow signal is called "running right", then yes, it is a perfect tuning solution. It's not semantics, it's effort. It's trying to make people accept a lazy hack as the real thing.

 

[Moy]

No offense, but sounds like you're upset with the AFC for some reason. I'm from the Supra world, I've seen many many cars make awesome power with a SAFC (1, 2, Neo) and EBC and be reliable while doing it. Yes, the SAFC alters the signal from the MAF to adjust fuel trim (which also adjusts timing, but less control over that).

You call it a hack job, many people call it tuning. If it's not tuning, then how do we get positive results?

Whatever, let's not turn this into an argument, everyone has their own opinions. Let's not clutter the OP's thread with this.

 

[ramsack]

There's not less control over timing, there is ZERO control over timing. The ECU goes to light-load cells and advances timing a lot. They are a fine tool for quickly trimming a small amount, but to use them as an all-out tuning solution to substitute for large injectors is just plain retarded, thus it is not tuning.

 

[4Lurker4]

"Engine tuning: the adjustment, modification, or design of internal combustion engines to yield more performance." It does give better performance hence it is, not the best but indeed a tuning option. You might not like it as it's not the best option out there, but it is indeed a tuning device. Personal views are one thing, definitions of the term is another. Not to mention, they're even in the tuning section on this forum as well.

Onto the OP's original question, don't tune without the Wideband and a logger or you'll be playing russian roulette with your engine. Although I suggest you take a look at these in the meantime to know what you're using:

http://www.dsmtuners.com/forums/articles-tuning-ecu/366004-safc-tuning-how-why.html
http://www.dsmtuners.com/forums/art...c-mid-point-correction-factors-operation.html
http://www.dsmtuners.com/forums/articles-tuning-ecu/105569-how-safc-works.html

 

[Seamus]

Jeez man you really hate the AFC. I guess you ran MOTEC m4 back in the day right? There was a time when sAFC, 2g mas and 650's was basically the formula for a good setup. That or a real standalone or VPC/GCC. And you could hardly even get a VPC, HKS hardly ever made them available in the USA. BTW, i've never even had an AFC I'm not defending it, and I've never used one for good reason. I've been using haltech since 1998, but still, there was a time when AFC was about the best option available for DSMer's.

 

[ramsack]

By that definition an air filter and exhaust is tuning. It's not. Using an SAFC is not tuning, it's rigging. Don't try to spew definitions at me and then not know the difference between "there" and "they're".

A VPC is not meant to tune, it's to convert to SD. You could adjust some things, but also get the add-on GCC box. I had one for my MR-2. I never valued what I was doing as tuning, I just wanted to get rid of the stupid flappy AFM. It still doesn't mean these were the end-all ways to tune. There were full standalones back then, and there still is now. Piggybacks were always about cheapness.

As for the DSM, EPROMS are old technology, even in 1990, and people could screw around with the code since day one for just as cheap as today, or probably less...without needing crap like an AFC.

 

[4Lurker4]

By that definition an air filter and exhaust is tuning. It's not. Using an SAFC is not tuning, it's rigging. Don't try to spew definitions at me and then not know the difference between "there" and "they're".

Really? I make one mistake, which was corrected by the way (before you posted), and I'm obviously not worth listening to? Great way to judge

I won't continue as it seems your set on your opinion and this isn't helping the original thread question in any way.

 

[Grimwrath]

anyone know how to disconnect the stupid safcII from my car when i got the car it had one and there so many wires coming from it i just dont want to mess nothing up i dont thing it is actually helping my car one bit

 

[2g spyder eclipse]

Holy grave digger batman!

 

[lasershark]

anyone know how to disconnect the stupid safcII from my car when i got the car it had one and there so many wires coming from it i just dont want to mess nothing up i dont thing it is actually helping my car one bit

its easy get the install directions online and just reverse it, most of the wires are just tapped into and there are only two that are actually cut, if I remember correctly, re-attach the two cut ecu wires and solder them back together

Holy grave digger batman!

I read the whole thing before I saw your post and the dates