2.4s -6 engine fuel injection options Options

[mb911]

So my 2.4 is fresh -0 miles with only start up minutes on it. I rebuilt the carbs and powdercoated the steel air filter assembly and replated all the hardware and am really thinking of selling the setup in favor of running a 3.2 fuel injection setup on likely with an aftermarket ecu as I don't think the dme will work well with my setup..

Any thoughts or experience with what I am proposing? Now note that I have done this on a 3.0 before with good success just no experience with a higher compression low displacement solex cam engine.. Thoughts?

[mb911]

Mark what about cht?? And is there any base map or am I on my own?

[Mark Henry]

Mark what about cht?? And is there any base map or am I on my own?

I believe the temp sender I listed is for aircooled.

It will start right up with the base map. It tunes with a pendant that I mount on an old ashtray right in my heads up line of site.
It has a rich/lean knob, you do a steady rpm (say 3000) turn knob to the desired AFR on the meter (or pendant), look at the knob value, scroll to 3000rpm fuel value and enter the new value, done and onto 3250rpm. Rinse, wash, repeat.
Your map will be about 95% tuned after about a 45 minute county drive. At that time you do a data log to a laptop and look for things to improve on.

There will be many who say they don't like the system, too simple, most of the things they will cite are bells and whistles you don't need.
Below is the perceived bad points

-SDS is batch fired only, no sequential, but sequential is of little use on an aircooled because it's only effective below 3000rpm. This fact is right in the MS FAQ's. Sequential shines with fuel economy below 3000rpm, which is great for a water cooled engine, but lugging a aircooled engine below 3K isn't good.
-SDS fuel only systems doesn't have knock control, only available on the units with ignition control, but it's really of little use on a noisy aircooled engine.
-The SDS MAP sensor doesn't like a poor vacuum, for hot cams, big duration and ITB's you have to run "TPS only". MS is a hair better, but you would still have to run what MS calls "alphaN" which is a fancy name for "TPS only".
But this shouldn't be an issue at all with solex cams and the 3.2 single TB intake.
-Some can't get past the pendant tuning, too simple, too archaic, but to me it's a plus as you don't have information overload and can tune as you drive. All the missing info can be datalogged and reviewed on your laptop after you have safely pulled off the road. This can also be done in real time.

The plus
-Simplest EFI system to tune.
-No dyno tuning time needed.
-Easier learning curve for old farts (IMG:style_emoticons/default/wink.gif)
-real time or saved datalogging.
-harness included, custom injector harness.
-fuel only system can be installed and running in one weekend. Of course this is the electrical only on an existing FI engine, in your case doesn't count installing the 3.2 manifold, pressure reg, pump, plumbing, mods, etc.

On a T4 single TB 1.8 and several 2.0 I've done they ran exactly like a stock factory FI system, My car with a basically stock 2.0 and C25 scat cam I ran for 3-4 years never once having the pendant installed other than the initial tune.