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Underbody braces, turbos and more!

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 Post subject: SMT6 Piggy-back ECU
PostPosted: Thu Jan 08, 2004 11:01 pm 
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Location: Calgary, Alberta. Canada
Seeing that I've already generated a bunch of interest for this from the webstore I might as well put this up :-)

Philip@Rotational Dynamics and myself have teamed up to bring everyone a piggy-back ECU. Full details can be found here http://members.shaw.ca/bigbearzuke/ts/SMT6.htm

It's fully programable via your laptop computer.

Philip has one installed on his GTi so he should eb able to answer most of your questions regarding the install. It will also work for the SOHC Swifts.
They will help boost the performance of N/A and turbo vechicles.

We need at least five orders to be able to stock this.

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 Post subject:
PostPosted: Thu Jan 08, 2004 11:47 pm 
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This has been proven to work in swifts? And we dont need a dyno to tune? I'm interested if so.

Cheers,
Rick

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 Post subject:
PostPosted: Fri Jan 09, 2004 12:29 am 
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Is that price in U.S. or Canadian?


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PostPosted: Fri Jan 09, 2004 12:55 am 
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Those prices are U.S. dollars.

As for tuning you can either use the A** dyno or use a real dyno. The unit comes without any pre-defined settings. What I include is detailed wiring instructions and parameter settings. The fuel maps and timing maps are up to the individual. I didn't feel a "canned" set of maps would work on everyone's car since we like our cars tuned by ourselves.

Philip
http://www.rotational-dynamics.com


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 Post subject:
PostPosted: Fri Jan 09, 2004 1:01 am 
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So for just over $600CDN how does this system compare to the the other PB systems like the Link, Apexi, HKS etc.? Not saying it's not worth it but I'm curious.

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 Post subject:
PostPosted: Fri Jan 09, 2004 11:48 am 
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m wrote:
So for just over $600CDN how does this system compare to the the other PB systems like the Link, Apexi, HKS etc.? Not saying it's not worth it but I'm curious.

I'd like to know that too.

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 Post subject:
PostPosted: Fri Jan 09, 2004 12:23 pm 
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I don’t know specifically the differences between the units you mentioned. If you go to my website, http://www.rotational-dynamics.com and check under the R&D page you will see a screen shot of a tuning map and some more information.

Only item I compared was an Apexi AFC, it was slightly less expensive but doesn’t have half the features the SMT6 does. The SMT6 isn’t a flashy ricer type of unit. The inventor of the unit designed it for racing purposes to control the fuel injection on his vehicle. I have mine under the dash on my Swift. You can’t tell it’s even their, I like that myself. Stealth is good.

You can even use the unit as a stand alone system but it’s pretty primitive. Perfect power has a PRS unit that is a complete stand alone system.

Philip


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 Post subject:
PostPosted: Fri Jan 09, 2004 4:39 pm 
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Location: Granby, Quebec, Canada
I'm interested since I'm currently installing a turbo on my car... did they allow us to remove the MAF and use instead a MAP sensor when using a turbo ?


Daniel


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 Post subject:
PostPosted: Fri Jan 09, 2004 4:44 pm 
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since you can infinately tune it, you can pop your electronics onto a larger maf & tune it from there, although once you're running a turbo, the slight restriction of the maf isn't such a big deal & you'd be better spending your money elsewhere ..


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 Post subject:
PostPosted: Fri Jan 09, 2004 4:47 pm 
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Yes I know the MAF isn't doing alot of restriction on a turbo, I was only asking that because my MAF isn't currently working properly and need to be changed...


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 Post subject:
PostPosted: Fri Jan 09, 2004 4:59 pm 
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You can use both. For turbo application you can use the MAP sensor to run an extra injector or boost controller.

As for replacing the MAF with the MAP it should work. The SMT6 doesn't care what type of sensor is used. The signal is a 5v dc signal either from the MAF or MAP. I'm not sure if the MAP sensor is as sensitive as the MAF sensor though. Their is also a parameter that lets you set the voltage trim for the analog signal.

Philip


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 Post subject:
PostPosted: Fri Jan 09, 2004 5:02 pm 
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Philip,

This means that I can used this piggy back computer to control some Individual TB's on a race G13B? Will it work with DIS ignition? Like electromotive?

Bolivar


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 Post subject:
PostPosted: Fri Jan 09, 2004 7:11 pm 
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For your application I would use the Perfect Power PRS system. This is a complete standalone system. It would better handle your tb's and ignition system requirements.

The SMT6 is more suited for street/light race applications using the existing ECU.

Philip


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 Post subject:
PostPosted: Fri Jan 09, 2004 7:17 pm 
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I'm going to ask a stupid question. :oops: Can you tune this thing on the fly, i.e. while driving? Or is it drive, tune, drive, retune etc. ?

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 Post subject:
PostPosted: Fri Jan 09, 2004 7:33 pm 
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i use a smt5i on my swift to help compensate for rospen cams

have you guys figured out ignition yet?

adam i have a plan for ignition but havent tried it yet wanna trade notes?


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 Post subject:
PostPosted: Fri Jan 09, 2004 8:41 pm 
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SYL23 wrote:
I'm going to ask a stupid question. :oops: Can you tune this thing on the fly, i.e. while driving? Or is it drive, tune, drive, retune etc. ?

you tune it via pc or laptop ( kinda like Greddy Emanage)

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 Post subject:
PostPosted: Fri Jan 09, 2004 8:41 pm 
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Yes you can tune on the fly as long as the laptop is plugged in. I've already done it. Yes my SMT6 controls my ignition adv/retard via the maps

The amount of timing advance is added to what the stock ECU is putting out. Let say for an an example the ECU is sending 10 degrees advance and you add five more through the SMT6 you get 15 total.

What's nice is if you're running a turbo application all you do is add a MAP sensor and you can retard your timing depending on the amount of boost.

Philp


Last edited by fbergski on Sun Jan 11, 2004 9:57 pm, edited 1 time in total.

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 Post subject:
PostPosted: Sun Jan 11, 2004 6:04 pm 
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Location: london ontario
Does this unit work with the MK1?


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 Post subject:
PostPosted: Sun Jan 11, 2004 10:00 pm 
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I'm looking into that right now. Another person has asked me and sent some pictures but I need more info to make sure.

Do the Mk1's run a MAF or map?
What type of ignition system do they run?

That's all I need to know.

Philip


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 Post subject: Hi...
PostPosted: Mon Jan 12, 2004 5:23 am 
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Hi...the other person asking about the mk1 was me...

The doubt about the smt6 is that it controls the injection and igniton, but the mk1 as a vaccum controlled distributor... so how the smt6 would control the ignition???? How would it act on the distributor?

Here are to pics of the coil and distributor:


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 Post subject:
PostPosted: Mon Jan 12, 2004 8:00 am 
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Location: london ontario
my MK1 GTI is not like that .. i have a jocobs after market ignition coil.. and i have no presurize distributor...
Big Bear should know if it will work.


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 Post subject:
PostPosted: Mon Jan 19, 2004 3:19 pm 
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If your MKI has a ICM module underneath the coil the SMT6 will work. Mechanical advance doesn't matter.

Philip


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 Post subject:
PostPosted: Thu Feb 05, 2004 5:32 pm 
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Location: Madcity WI.
You already said it works for SOHC engins. So this might sound dumb, but will it work for the 1.6 SOHC like in my car?


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 Post subject:
PostPosted: Thu Feb 05, 2004 7:16 pm 
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Yes it will work on your X-90. You use the same igntion system as the Swift GTi and use use a MAF sensor also.

PM me for me details.

Thanks

Philip


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 Post subject:
PostPosted: Fri Feb 06, 2004 11:52 am 
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fbergski wrote:
...
The amount of timing advance is added to what the stock ECU is putting out. Let say for an an example the ECU is sending 10 degrees advance and you add five more through the SMT6 you get 15 total.
....


How accurately have the SMT6 advance output timing since the stock ECU only sends the trigger signal when it is required?

Okay, lets say that the 5000rpm and depending on the load the ECU calc a timing of say 26* BTDC. When the crank reaches say 3ms (dwel) from 10* BTDC, the ecu fires the ign signal. Therefore, there is not enough time for the SMT6 to intecept and advance the ign signal.

Colin


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