slowboy says SAFC?

[Blitzeclips]

hey guys, Ive been told before that the SAFC isnt needed for boosting the 420a. I plan on getting a vortech sfmu, 255, and 550cc injectors. so the other day i called slowboy to get some estimates on dyno tuning. The guy i talked to advised me strongly, inplying that it is VITAL to the 420a to have a SAFC. i was almost certain it wasnt NEEDED but helped, and apparently its a MUST according to SBR? can anyone please give me some input, suggestions here? TIA

 

[clipsit]

Hey man. I have continually seen on this site and other places, many people say it won't work, but I was told that you should be able to get the SAFC to work on any car. So I guess it's up to you. It just takes some time when tuning. I have one and I am going in to get my car tuned here shortly, so I will let you know what goes down. Just find someone who you trust to tune your car (like a well known shop in your area) unless you are doing it yourself. I will let you know how tuning goes.

 

[project_tsi]

First try it without, then hook up the SAFC, tune it correctly, and try it.

 

[JessesTalon]

When i had a 2gnt.... it was MAP, as far as i know safc doesn't work with map, or maybe its just my gc8 that it doesnt work with.

 

[selmerguy]

Look at other post concerning the SBR turbo kit. Also look at 2gnt. I never got it to work. And all the guys and gals on 2gnt agree that there is little R&D in the kit. I know it wont work. Try if you must. Good luck getting a idle with 550cc injectors and the stock fpr(55 psi ish)

 

[420aVOS]

ok let me see if i can clear up a few things here. firstly the safc II happens to be a map hack it makes the car think you have more/less manifold psi to induce more or less fuel. so yes it will work on a 420a i know this for a fact i ran it for almost 2 years before going standalone. next point to clear up, SBR was most likely saying that a dyno tuning would be wasted without something like a safc seeing that fmu and injectors leaves you with very little to no tuning options on the fuel side. hope this helps, happy boosting

 

[selmerguy]

ok let me see if i can clear up a few things here. firstly the safc II happens to be a map hack it makes the car think you have more/less manifold psi to induce more or less fuel. so yes it will work on a 420a i know this for a fact i ran it for almost 2 years before going standalone. next point to clear up, SBR was most likely saying that a dyno tuning would be wasted without something like a safc seeing that fmu and injectors leaves you with very little to no tuning options on the fuel side. hope this helps, happy boosting

I agree the fact that the safc helps alittle with tuning WITH a sfmu of fmu. but.... SBR says you can use a safc and no aftermarket fpr with 550cc injectors. Which will not work.

BTW: Better wach your lack of caps. One of the nazis will write you up with a warning.

 

[420aVOS]

Yeah you are right, a SAFC with no way to control FP is not gonna work good. I mean it will work but you will pay for it in the end, when it come to rebuilding your motor.

 

[DSMcrazy3]

I have SAFC2 on my car and have it tuned with that. I could definitely feel a difference in power after it was tuned with it. A guy that was with me agrees as well. All cars are different though so even though I felt a difference you may not.

BTW: Better wach your lack of caps. One of the nazis will write you up with a warning.

That is absolutely rediculous..

 

[BigRand]

Okay just to clear up what everyone is saying.

1. SAFC is a good device to fine tune your fuel curves, espcially if dyno tuning. (wideband for street tuning).

2. SBR wants to convice you (and the rest of this site) that you can run your car using their fuel system, which consists of a walbro 255 fuel pump, 550cc injectors, and a SAFC.
The consensus on this site and 2gnt.com is that that fuel set up will not work unless you have a way to regulate static fuel pressure, as your car will not idle properly.

3. We (most people on dsmtuners) would advise you to use a SFMU or 1:1 FPR to along with that fuel sys\tem setup.

Did I miss anything?

 

[clipsit]

Nope, I think you summed it up Rand. A SFMU or fpr with that setup is a must!!!

 

[Blitzeclips]

sfmu is what i had planned on using. I just wasnt sure if the safc was NEEDED. so consensus is that i could use the safc to tune my car to a cerain extent? on the dyno?

 

[BigRand]

Correct, the SAFC has a lot more fine points to adjust the fuel curve at different rpm points. You can't really adjust fuel like withe SFMU like you can with a SAFC.

 

[selmerguy]

IMO Not much need for a safc unless you can log. Honestly i had one for a while and sold it. The safc did me little good even when i tried to tune.

 

[Blitzeclips]

IMO Not much need for a safc unless you can log. Honestly i had one for a while and sold it. The safc did me little good even when i tried to tune.

now im confused, so what would be the best tuning unit for my car?

 

[dr1665]

Hi, buddy.

 

[compression]

A logger and an afc, you would want to know if your knocking, or running to rich, or to lean , trust me if slowboy racing sold a logger kit for the 420a's they would recommend it also

p.s. to achieve optimal performance you want to run a little lean without knock. As jeff (keydiver) says "lean is where the powers at!"

 

[clipsit]

You could try and use the sfmu or find a used SAFCII on the site here...try it out and see. You will never know until you try. Some get it to work others don't. It's all about preference and research. Alot use the SAFC and alot don't...some swear by it and others don't have as good of luck with it. I will let you know after this Thursday how things go w/ mine, but just research and come to a conclusion. Don't let anyone person make the decision for you. Go to somewhere in you area who tunes and ask them what has been a successful piggyback to tune with...Just got to do your research and go from there man. Good luck.

 

[XMasta19]

just ### slowboy is selling a 420a kit, doesn't mean they know what they're doing with it. just listen to all of us 2GNT owners, the safc is mostly a waste of money for our cars.

 

[selmerguy]

A logger and an afc, you would want to know if your knocking, or running to rich, or to lean , trust me if slowboy racing sold a logger kit for the 420a's they would recommend it also

p.s. to achieve optimal performance you want to run a little lean without knock. As jeff (keydiver) says "lean is where the powers at!"

to bad we dont have a knock sensor

You can go many different ways with fuel and tuning. It all depends on your total goal. I believe that megasquirt is the most cost effective and best way to tune our cars. You can do it with a safc, sfmu, and logger. But with the money you spent on all that you could have msns running and have more control over what you are doing. If msns seems to out there for you by all means go with the afore menioned set up. But take my word for it you will want more.

 

[BigRand]

IMO Not much need for a safc unless you can log. Honestly i had one for a while and sold it. The safc did me little good even when i tried to tune.

I meant get the SAFC for use on a dyno, which should be logging everything you do in the first place. Thats what I meant.

 

[Blitzeclips]

okay, cool. so ive taken all your opinions in and i think im about ready to order my feul setup. Im going with the 550cc injectors, fpr, and 255lph. I figured id run that w. boost around8 psi until i can save some cash for the MSns. Seems like that setup should work fine @ 8psi, then when i want to boost more ill buy the MSns. Would anyone happen to the the oil return.feed line sizes for a super 20g? im thinking 1/4 feed w/ 4an fittings? any suggestions?

 

[selmerguy]

okay, cool. so ive taken all your opinions in and i think im about ready to order my feul setup. Im going with the 550cc injectors, fpr, and 255lph. I figured id run that w. boost around8 psi until i can save some cash for the MSns. Seems like that setup should work fine @ 8psi, then when i want to boost more ill buy the MSns. Would anyone happen to the the oil return.feed line sizes for a super 20g? im thinking 1/4 feed w/ 4an fittings? any suggestions?

Be careful with this setup. You will need a wideband to make sure you have enough or to much fuel. Your stock ecu will not handle the 550s to well. I am assuming that your fpr is a Aeromotive 1:1 which may or may not raise your fp enough for 8 psi even with the 550's. The SFMU would be better for your application. And you can sell it when you get msns and get the cheaper Aero fpr.

 

[Blitzeclips]

okay. so what ratio SFMU would be best @ 8psi? or would i be able to go over 8psi with an SFMU?

 

[selmerguy]

okay. so what ratio SFMU would be best @ 8psi? or would i be able to go over 8psi with an SFMU?

The sfmu has adjustable ratios. They depend on disk. Corbin had a fuel calc on 2gnt so you can figure it out. I am sure you will be allowed back on there soon so check it out.
I think the sfmu comes with 4, 6, 8, or 12:1 ratio disks. Many people run this set up I am sure they will chime in and tell you what disk they run.