I also posted this in the lt1 tech area:

I was hanging with my DSM (talon) buddies and they all run this setup to help tune for bigger turbos and injectors etc... it's sort of a scan master maf translator all wrapped into one. Has anyone tried this or is there any other product like this we can use on our cars?
http://www.apexi-usa.com/electronics_safc.asp

 

The S-AFC is a piggy-back computer that basically just adjusts fuel curves. LS1-Edit does the same thing (granted, for a bit more money) as well as a lot more.

All this will do is allow you to go up to +/- 50% of stock fuel at like 500rpm intervals, to tune for better A/F ratios.

Would something like this work? Probably, but why not get LS1Edit which is available, and does so much more...

 

Yes I would love to have the lt1 edit but this requires a lab top and allot of programming knowledge to make it work correctly ,
I was just curious because I saw how easy it was to hook and the dramatic impact this device had on a modified turbo dsm (talon) and he was able to adjust the fuel curve with a touch of a button on the fly not like the lt1 edit where you have to flash the computer each time a change is made. I was just wondering and I thought I might bring to the attention to the board as a possible alternative to things like the MAF translator etc.

 

Laptops can be picked up for $300.00 every day.

LT1 / LS1 / Tunercat have so much more to offer and do not require a lot of knowledge to make changes. The uniqueness of what you can do to your own computer far outweighs the simplicity of a device that only adjust fuel.

 

FYI, they don't make these for Fbody's, so you would need to know exactly how they work in order to modify it to fit one. I'd just recommend LT1_edit.

 

The S-AFC is a universal part. If you don't have a laptop, your looking at at least 700 bucks to get going with tuning by the time you buy a laptop, OBD1 Computer, Knock Sensor, cable, and Tuner Cat software (which rocks).

I'm planning on getting a used S-AFC, building my own cable, and downloading the free file from carputing.com that Data SCANS (you can have a buddy read the values for you). I may get Tuner Cat one day, but for now I don't want to deal with it. My buddies have plenty of experience installing S-AFC's, and plus its a cool little blue thingy .

 

Dude, I don't know where you are buying laptops, but your getting jacked for $700 for all the stuff you need to get started. I did it with less than $300. $100 for a laptop off ebay (all you need is a 120 or so with about 72 MB of RAM), $100 for Tunercat, and $100 for the cable (or, if you know what you are doing, you just build your own for $40, all it takes is soldering gun and some time). Even including the Pocket Programmer, some extra flash chips, and sockets in case you fry your PCM, your only looking at most $450. And I highly recommend the pocket programmer route, you WILL end up frying your PCM at least once. Nothing is more annoying than having your PCM fry and not being able to pop those chips out and reflash them manually.

 

I already have a laptop, it wouldn't cost me more than $300 either. Most people I know who haven't had a laptop typically try before they by and end up spending more by buying locally.

I think a S-AFC and TunerCat would make a great combo. NOTHING beats being able to tune on the fly. And for the guys who are bolt on only, tuning fuel is probably all that needs to be dealt with anyway. If you already have a laptop, download some free scanning software, build your cable, grab up an AFC, and let a buddy watch your knock values and then just tune it out after a few interstate pulls.

Hell, its a good system that works for us .

 

Why don't you try it out and fill us all in on how well it works.

 

I plan on it, all I need to do is get a good wiring diagram and an S-AFC. I want an S-AFC II but they are not compatable with OBDII so i'm having to save up for OBD1 and an S-AFC. After I get all of that hooked up, I'm adding on Tuner Cat. I mind as well go where few have gone before. The hardest part is finding the right wires to tap into.