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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 08-06-2008, 10:55 PM   #1
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Software OR Piggyback chip

Hi guys i noticed that u all install software on your cars and not a piggy back chip. Why? I would think that by sticking a chip on( unichip), you wuld be able to tune it way better on a dyno and set it up for the exact conditions. My Viggen is out of warranty so it makes no difference if they can see the chip. Opinions please
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Old 08-06-2008, 10:58 PM   #2
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cause T7 is way better than any chip at controlling cars parameters and it comes stock on the car .
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Old 08-06-2008, 11:01 PM   #3
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You can't stick a piggyback chip on these cars.


The OE engine management is too complicated for one to work.


That's why we use software.
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Old 08-06-2008, 11:02 PM   #4
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You can't stick a piggyback chip on these cars.


The OE engine management is too complicated for one to work.


That's why we use software.
Thats a reason to
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Old 08-06-2008, 11:13 PM   #5
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Quote:
Originally Posted by Palmer View Post
You can't stick a piggyback chip on these cars.


The OE engine management is too complicated for one to work.


That's why we use software.

There actually is a piggy back in Sweden that works (Civinco) but the gains are so negligible that its not worth the $3000 to do it.

http://www.rkautotechnik.com/11.html - To read more about it.


The trionic is capable of doing so much more for you than a piggyback.

Check out ECUPROJECT.com for more on self tuning.
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Old 08-07-2008, 07:25 AM   #6
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Unichips have there niche and it's not saab, etc. I had one in another car, the guys from unichip came down and tuned it on a dyno at a price of about 15,000. That's what they paid to have the motor rebuilt after the car melted a piston and fucked a few others bits on a dyno. The best part was that I got a better engine out of the deal, but waited months for it. Plus I was smart enough and they were dumb enough to sign a form I had provided stating if anything goes wrong that they are responsable. They were so damn cocky about it that when the engine let loose, I was pissed/shocked, but to hear them talk among one another, call their bosses explaining what had just happened was priceless.
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Old 08-07-2008, 08:25 AM   #7
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because piggybacks are worthless. even most hondas dont run them any more...
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Old 08-07-2008, 08:38 AM   #8
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because piggybacks are worthless. even most hondas dont run them any more...
Truth!

They switch to standalone for complete replacement of the stock system.

Piggybacks are the poor-mans half-assed attempt that makes them pay more later down the road when it causes damage and nets them little gains in HP/TQ along the way.

Do it it right up front: Get more HP/TQ and dependability too boot!

Sorry if i come off to harsh. I would just hate to see a Saab succumb to a ill informed decision.
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Old 08-07-2008, 08:43 AM   #9
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Before this gets too far out of hand, I'd like to say that it would be cool if a piggy back could be made to work.

To the OP, get a copy of the Saab WIS (workshop information system) and start reading about how all the I/O parameters are checked and evaluated against one another. Plus look at the Ion Sensing functions.

By the time you could make it work, have everything faked/bypassed, you would probably be better off just ripping out everything and going stand alone.
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Old 08-07-2008, 11:42 PM   #10
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Thanks for all the responses guys. I appreciate the feedback. Going to definately go the software route
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