Aznlightning2002

HEy has anyone heard of this?
SDS-EFI, programmed w/handheld keypad
could someone show me some pics and specs, and how good this ecu is? WHat's a DFI? whee can i get it tuned and how much would that cost?

tims

search, there are many posts about SDS

FPrep2ndGenRX7

You'll find most of the tuner type people on the forum will advise against getting the SDS. If you have the money and can afford something better get it but if your limited on the funds check out the SDS. I've seen it work just fine on N/A cars and turbo cars alike as well as a friends supercharged 13B in a miata. He does use an MSD that retards the timing based on boost. The reason for that is the SDS doesn't control the ignition. It will only control the fuel delivery. He uses a 1st gen distributor with the coils wired up for direct fire and when he dynoed earlier this year was making 230HP to the rear tires and about that much torque also and all that under 6800rpm. The SDS works but it does have some limitations but if your willing to live with an engine that is doing 95% of what its capable of when properly tuned then go for it. I am when I go FI. Learn all you can about the units available and decide what you want to do and go from their.

www.sdsefi.com
www.rotarymiata.com

peejay

Here's what I figured.

For how much it would cost to get the SDS set up, for about $100-200 more you can have a Haltech and have much more tuneability.

I still want to know why SDS can't be used on a rotary. You can't run split timing with it but then there are other standalones that can't do split either.

matt_ledbetter

The SDS does control timing as well. at least on a boinger. Although it might have problems on a rotary, I'm not sure...

http://www.sdsefi.com

I had one on my twincharged (supercharged and turbocharged) Mr2 and it worked pretty well. Its not as elaborate as a Motec, but its a very good bang for the buck.

-Matt

peejay

$1100-1300 or so for an EM-3F system... how much for a Haltech E6K?

13BAce

About the same price.

FPrep2ndGenRX7

Actually the SDS unit you want is $763(as quoted off their site) plus $60 for a MAP sensor(N/A application). There are options you can get on the SDS which will run the price up but do nothing for performance. Used SDS units can be found occasionally for $450 +/-. Don't forget about the distributor and coils for another $100. Still less than the Haltech with probably 95%(that is a guess but I'm comfortable with it) of the performance potential. Possibly more/less depending on tuning ability. I've seen what the SDS can do in person and I'm not against using a distributor with direct fire coils. If I can get a Haltech for the same price when I buy I probably will.

On a side note, do you need any additional software to program the Haltech? I know you need a computer handy something you don't need with the SDS units.

peejay

I'd rather program with a computer than a handset

Also I wouldn't get the fuel-only (EM-3D?) computer, I'd get the -3F for 4-cylinders and run it with no split. But for that much money you can easily get a Haltech and the advantage of using a computer instead of a handset