In the coming weeks I'll hook my new multi-meter up to the SMT while it's running & see if we can interpolate what values = what injection duration rate.
AFA the anolog screen, it's going to varry on every specific vehicle. Which would also be interesting to log.




I want to get a rough map of the injector control, simply because if you know injector output, and injector duration - you there-for know how much fuel you're sending without having to measure anything.

That would make extra injector tuning much, much easier.

 

Sounds great. Thanks guys.

 

Well what i normaly do is put a 1 in the cells of the injector control and see using a graduated cyl what it puts out in 30 or 60 seconds

Its quick

 

And... just running a DMM on the injector won't tell you what you really want to know.

Our injector system is PWM (Pulse Width Modulated) which means that a voltage comes up to a certain point, the injector opens, then stays open as long as the voltage is high:

i.e., the injectors only know how to open & close, not to vary the amount they're spraying.

So, to do what you're thinking about, you need an oscilliscope which will let you measure the "width" of the pulse against the "time base" of the engine RPM, and relate that to the amount of liquid that the injector lets pass in a given amount of time. That will let you develop the graph/chart that you're thinking about.

 

peak and hold injectors

I gotta get my scope back so i can play around with duty cycle and learn how to use the scope

I just got it and sent it off to a smt6 customer to help him diagnose his problem with grounds. (car would stall when he rolled down the windows)

 

Exactly...
Some DMM's are better than others. Your mileage may varry.

 

where is the best place to get the smt 6?

i went on sea2sky's site and it said 475? people were talking about 389...?

ill be purchasing one within the week....and after reading through this whole thread....im trying to get a feel for the ease of install. is it comprable to installing a tmc 1.1? just hooking up a few wires to the ecu?

also, i dont own a laptop...how would i go about tuning it? i have no experience in tuning what so ever either. should i look into finding a good high performance car shop around here that would do it for me?

thanks

 

Yea dude the price is dropping to 389 here as well.. i havent updated it yet
I get my dealer pricing update very late

Yea you need a laptop to tune this thing

You can find them for cheap nowadays just needs windows and not 3.1

 

so if i order from you, itll be 389 plus shipping?

do you take paypal?

thanks

 

Yep its all online the price changes are being updated right now wow good timing

I dont have any in stock right now as i sold out of them recently. I will be getting some more in shortly

 

be sure to let me know first thing.

email afulp581@yahoo.com please.

thanks

 

Online Store updated

I will let you know when stock is in

 

Right on, the SMT thread revival(I'm a little late)! I read in the first pages that this product is able to tune for max power with a S/C or H20 injecton. What about the N/A crowd? Would this be a good place to start BEFORE adding a S/C? What type of gains would be seen using only the Walbro 190 and larger injectors with the SMT-6? Or is the 3.4 already being fed max amounts of fuel while being Naturally Aspirated?

 

Mark (midiwall) used it in NA form. He reported very little gain - not enough to be worth it. As for the Walbro - same thing. The stock fuel system can easily keep up with pretty much any light bolt-ons you can throw at it, such as intake, headers and exhaust (all of which I ran with 87 octane and the stock fuel system).

So, to answer your question, don't waste your time with any of that stuff unless you plan to get forced induction or similar.

Go deckplate, ISR, and exhaust until you can afford a SC'r and all the trimmings.

 

Yeup... what Christian said!

 

The toyota OBD-II systems are VERY well developed...enough so that, as the 2 above me have mentioned, that you will not gain much with the stock internals/no olt on units.

Even going as far as installing a set of my level I cams will still keep you form really needing anything more.

The 3vz-e and the OBD-1 systems are able to be fixed up with a smt6 and what not.

However ifyour willing you can go as far as getting some 94 octane and water injection, then taking a piggyback and bringing up the timing by 5-10 deg (dont take my word ) to help bring up your HP by approx 15-20 I have done that to a couple stock enignes before with OBD-II got as much as 40whp with just timing mods.

 

Thanks guys, I wouldn't mind installing the SMT and fuel pump then getting the S/C. Somehow it doesn't seem as expensive buying the cheaper parts first!

 

nothing wrong with that....plus the fuel pump is the hardest to install well for me

 

At one point I was running the Walbro, colder plugs, and 170 thermostat; all in anticipation of the supercharger to-be-installed that was at Magnuson getting rebuilt.

I had no issues.

The SMT was the hardest part for me. Just ask Mark and Johnny.

 

Just dont ask please