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  Soarer Central * Mechanical - V8 * SMT6 Piggyback ECU finally working V8 SC400 Previous Previous    Next Next  

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Open in new windowArchive through March 15, 2006Justin McLernon25 
Open in new windowArchive through April 06, 2006Anish Varsani25 
Open in new windowArchive through April 06, 2006Roger Costello24 
Open in new windowArchive through April 09, 2006Damien Smith25 
Open in new windowArchive through April 12, 2006Justin McLernon25 
Open in new windowArchive through April 13, 2006Damien Smith25 
Open in new windowArchive through May 14, 2006Anish Varsani25 
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Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 317
Reg: 07-2005

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Wednesday, June 14, 2006 - 01:34 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

The extra injector will still cause the stock computer to adjust.

I think the Bullet unit is only for timing and WOT fuel. The bloke from bullet said that the piggyback would make the car a lot punchier down low. I'm not sure how much timing the car would be able to take with a blower. I would have thought that timing would have to come out of the map at 6psi but I could be wrong. Richwood claim that the stock ECU can handle the blower kit so I'm assuming it's safe to run 14.7:1 closed loop.

Without putting a car on a dyno and checking if the stock computer pulls out the fuel mods, there's no way to know.

Even if it didn't pull the timing and fuel out initially, it might over time.
Damien Smith
DieHard
NSW
Manual UZZ31

Posts: 625
Reg: 07-2005

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Wednesday, June 14, 2006 - 02:35 pm, by:  Damien Smith (Damien) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I thought the extra injector map was just to control a single injector independently of the stock fuelling? Admittedly I haven't really looked at it in any detail.

Incidentally, what wattage resistor did you use?
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 318
Reg: 07-2005

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Wednesday, June 14, 2006 - 02:55 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

0.25W, 1kohm.
application/octet-streamUpload
1UZFE.SMT (3.0 k)
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 319
Reg: 07-2005

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Wednesday, June 14, 2006 - 02:57 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Select positive input polarity 'On' and positive output polarity 'On'.
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 320
Reg: 07-2005

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Wednesday, June 14, 2006 - 03:04 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

With the extra injector, the stock ecu will detect a rich mixture and pull fuel out of the internal map to compensate for the additional fuel you're adding with the extra injector. If you get the ecu to the point where it can no longer pull out fuel, you may get an error code but then you can inject as much as you want with the extra injector.
Damien Smith
DieHard
NSW
Manual UZZ31

Posts: 626
Reg: 07-2005

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Wednesday, June 14, 2006 - 03:09 pm, by:  Damien Smith (Damien) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Makes sense - thanks.
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 321
Reg: 07-2005

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Wednesday, June 14, 2006 - 03:19 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

If you're going to be soldering up the diode and resistor on veroboard, cut it to 3x3cm, solder components and wires then wrap the vero board in electrical tape, 3 layers should do it, then either glue or tape it to the top of the SMT6.

If you cut the harness down to 200mm or 250mm, this should be plenty. You can remove the unused wires by releasing the clip on the lug and pulling the wire out of the connector.

I taped my SMT6 to the top of the existing ecu. The black kick panel still fits.
Neil Griffiths
Trader
NSW
I have MORE Soarers than Hayden :-)

Posts: 2164
Reg: 07-2005

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Wednesday, June 14, 2006 - 06:32 pm, by:  Neil Griffiths (Aussiesc) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I'm lucky..I have the harness from an Apexi Power FC ( 1st Series ) that was from a JZA80 :-)
So I can wire all mine up on the bench then just plug it into the harness..heheheheh
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 322
Reg: 07-2005

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Wednesday, June 14, 2006 - 07:55 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Show off!!!
Neil Griffiths
Trader
NSW
I have MORE Soarers than Hayden :-)

Posts: 2165
Reg: 07-2005

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Wednesday, June 14, 2006 - 08:37 pm, by:  Neil Griffiths (Aussiesc) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

About $250 you may see one as well :-)
They ain't cheap :-(
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 323
Reg: 07-2005

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Wednesday, June 14, 2006 - 09:04 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I'll consider that path if/when I get bigger injectors.

My main concern is keeping the car road and ADR emmision legal so the insurance company can't refuse to pay if push comes to shove.

That's why I made sure I could get ADR compliance before installing the blower.
Neil Griffiths
Trader
NSW
I have MORE Soarers than Hayden :-)

Posts: 2167
Reg: 07-2005

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Wednesday, June 14, 2006 - 09:27 pm, by:  Neil Griffiths (Aussiesc) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Naa..Just makes it easier..
This is similar to what its like.

Upload
Justin McLernon
TryHard
Western Australia
UZZ32

Posts: 253
Reg: 01-2006

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Wednesday, June 14, 2006 - 09:37 pm, by:  Justin McLernon (Zz32) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I think my head is about to explode.

Anish, how would you feel about putting together a step-by-step tutorial for V8 owners along the lines of "DUMMIES GUIDE - HOW TO INSTALL AN SMT6 INTO A V8 SOARER"? I am talking as dumbed down a description as possible, pretend this is a project for a sheltered workshop, and include:

- physically installing the SMT6
- what "mods" need to be done and why
- software settings

Or would this fall into the category of "if you have to ask...get someone who has a clue to do it"
Benny Gammelmark
Goo Roo
NSW
V8 UZZ31

Posts: 1597
Reg: 07-2005

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Thursday, June 15, 2006 - 05:05 am, by:  Benny Gammelmark (Oldfield) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

Since this is the best way to get more low down torque I think it would be a great idea Justin.

Write it so a "Newbie" has at least a chance to do it and get Peter to put it up in the "How-to and Tutorials" section.
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 324
Reg: 07-2005

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Thursday, June 15, 2006 - 06:05 am, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I'll see what I can knock up tonight. I'm going on holidays tommorow so I'll see what I can do in the short time.

I've got screen shots of the settings and wiring diagram. Will just need to attach a pic of the SMT6 location and the diode/resistor mod.
Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8

Posts: 4940
Reg: 11-2004

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Thursday, June 15, 2006 - 06:21 am, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I would be happy to post it as long as I can understand it :-)
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 325
Reg: 07-2005

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Thursday, June 15, 2006 - 06:52 am, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

The installation part isn't hard but trying to explain how to solder up the resistor and diode to the non electrically minded is a bit of a task.

It might be easier for me to make up 9 boards and post them to the SMT6 owners. Either that or just take some pictures of a dodgy version using crimp connectors.
Peter Nitschke
JunkFilterer
South Australia
GT4.0 V8

Posts: 4942
Reg: 11-2004

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Thursday, June 15, 2006 - 06:58 am, by:  Peter Nitschke (Pen) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I would be happy to buy a nice board :-)
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 326
Reg: 07-2005

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Thursday, June 15, 2006 - 07:03 am, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

As I mentioned, you won't see it until the second week of July. If that's not a problem then I'm happy to solder up if members PM me with details.

The board shouldn't cost anymore that $20 posted.
Mark Paddick
Goo Roo
ACT
UZZ31 V8 Soarer , JZZ30 TT Soarer

Posts: 2460
Reg: 07-2005

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Thursday, June 15, 2006 - 10:46 am, by:  Mark Paddick (Sparks) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I haven't been following this thread and there are a couple of things.
For the diodes a 1N4148 is not a high speed diode, the others are. 1N4148 is probably a bit low on the current ratings too, use one of the others. 1N5819 is ideal.
If there is a problem running -ve supply directly to ground that is cured by running it directly to the battery THEN YOU HAVE EARTHING PROBLEMS IN THE CAR!!!!!
The chassis is the biggest wire gauge you will ever get. If it is properly connected to the battery -ve terminal then there will be no problems using the chassis as the -ve connection. Sort this out before attempting anything else. Many problems will simply go away when it is right.
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 327
Reg: 07-2005

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Thursday, June 15, 2006 - 11:01 am, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

1N4148 according to the datasheet is a high speed, small signal diode. I've used these in small three phase motor drives accross transistors before without a drama as long as the winding inductance, voltage and drive switching speed are considered when choosing a diode.

Dosn't really matter. I'm using the ECU earth from the LHS cylender bank and the ECU B+. Noise problem ended up not being a ground problem but a trigger level problem. The fuel pump ecu seems to put a small ripple on the B+ that was being picked up by the SMT6.
Justin McLernon
TryHard
Western Australia
UZZ32

Posts: 254
Reg: 01-2006

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Thursday, June 15, 2006 - 03:01 pm, by:  Justin McLernon (Zz32) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I'd certainly be up for one of these boards if they are necessary to properly install the SMT6.

A Dummies Guide to the SMT6 installation would be very much appreciated by people like me who would like to "give it a go" but have no idea what a "diode" is and why it is required for the installation.
Anish Varsani
TryHard
QLD
V8 UZZ30

Posts: 328
Reg: 07-2005

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Thursday, June 15, 2006 - 04:16 pm, by:  Anish Varsani (Yomama) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

If I send you the diode board, you won't need the dummies guide, all you have to do is wire everything as per the wiring diagram.
Carlos Restrepo
Newbie
Tx
V8

Posts: 1
Reg: 10-2007

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Friday, October 12, 2007 - 01:17 pm, by:  Carlos Restrepo (Ca12los) Quote hilighted text Edit Post Delete Post Print Post   View Post/Check IP (Moderator/Admin Only) Move Post (Moderator/Admin Only)

I am almost done setting up my SMT6 on my supercharged LS400.
I am going to use a 2 bar MAP sensor for deflection and I will be adding water/meth injection then advancing the timing.

I really don't know if I should tune closed loop lambda and use my BEGI FPR to tune the fuel at WOT. I guess tuning WOT and leaving closed loop alone would be the best option to most of us.

I would love to hear how Peter's car is doing nowadays. 230 RWKW+ I bet!!!

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