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Old 02-04-2003, 01:07 AM   #1
Jerry Seagreaves
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Join Date: Jun 2002
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blue

Default Danger in off the shelf maps?

Is there any danger in buying a used unichip with and off the shelf map, providing that I have the required modifications? It seems like there should be a level of safety built into them right???
Jerry
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Old 02-04-2003, 02:45 AM   #2
tdxflex
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yeah, they are conservatively tuned. just make sure you explain in detail what you will be running if you get it remapped. for example, i get chicago gas near me (oxygenated), so it doesn't run like everyone elses 93 octane, that would be important to include.
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Old 02-04-2003, 03:05 PM   #3
WRXzard
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You guys should really be careful. There are a few things you should take into consideration.

1. To rebuild your enging you are looking at a few grand.
2. To put that blind map into you car can lead to the blown
engine thats going to cost you a few grand.
3. Get a used chip for a few hundred dollars and it could cost you
a few more hundred dollars to tune it to your car. With that
you can save a little more and get the latest technology for
your car.

To put it in simple terms, would you buy a pentium III PC. Its really cheap!!!!. I would guess not.

Taking that risk to save a few hundred dollard is not worth it. Just save your money and get the done right the first time.
There are new generation products on the market that will serve you better.

WRXzard.

My (PSA) Public Service Announcement
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Old 02-04-2003, 05:14 PM   #4
stilesg57
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Sure miss my old WRX

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dyno tuning a unichip is cheap insurance. Dyno tuning isn't that expensive, I remember that just about every dealer in the Cobb/APS network had AWD dynos and were charging between $100 and $150 for a Unichip retune. Considering you can get a used Unichip for $350, then dyno tune it for $150, for $500 you'd have a great set up. $500 for a management system like the Unichip is a heck of a bargain; it's a great proven system and it would cost at least 50% more to get an EcuTek reflash and twice as much to get a UTEC or Xede, and that's before you have a professional tuner dyno tune those. In short, a dyno tuned used Unichip is a great value for management.

BTW, I am a firm believer in dyno tuning your car when using ANY kind of aftermarket management device. I frankly would never put an "off the shelf" management setup in my car - the danger is slight, but it is there. Not spending $150 for a dyno tune is stupid (heck, you'll get more power safer that way too!). It's cheap insurance compared to a new engine.
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Old 02-05-2003, 12:58 AM   #5
tdxflex
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you won't blow up your motor if you have a few essential gauges to monitor certain parameters. I'm assuming you'll have at least a Boost gauge and EGT gauge, I woudln't recommend any sort of engine management to anyone who doesn't have them. I also haven't heard of anyone blowing up their motor because they used a base map on a unichip for their mods. there's definately a risk, but just be smart about it.
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Old 02-05-2003, 05:12 AM   #6
stilesg57
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Someone with a thread just this last weekend blew his motor from high EGTs with an off the shelf mapped Unichip. About 10 posts into the thread, three or four people in a row said that he wasn't the first to blow an engine on a premade Unichip, hinting quite heavily that they had too.

I'll say it again: if you want the safest thing for your car, get ANY kind of management setup dyno tuned. There's just no reason not to.
On another note, this is a major reason I first went to Cobb Tuning instead of Vishnu or TXS, I liked that Cobb wouldn't even sell a Unichip with premade maps because it wasn't how the product was designed: this fact was confirmed to me in a letter by one of Dastek's R&D employees. Don't get me wrong, I highly respect TXS and Shiv's tuning abilities and products (I have some from each company on my car), but when it comes to engine management I think Cobb kept it real and stuck to dyno only tuning - I applaud them for that. For the benefit of all, it seems that dyno tuning individual cars is becoming a more common practice among not only these tuners but in the Subaru aftermarket community in general. Dyno tune your management: I hate nothing more than half@ssing something and then having it come back later to bite me.
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Old 02-05-2003, 05:16 AM   #7
stilesg57
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1992 MR2 Turbo
Sure miss my old WRX

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Here's that thread by the way. Some good info for those with questions about management, and it further confirms the importance of gauges if you do any kind of modding that affects systems that could lead to catastrophic problems such as turbos, fuel systems, boost levels, and engine management. Regardless of how the management is mapped (be it dyno tuned or premade), it really is important to have these safety measures in place.

It's also a very sobering thread for those of us who like to hope there is no risk in pushing major power from our little 4 bangers (that would be me )

http://forums.nasioc.com/forums/show...ghlight=piston

Last edited by stilesg57; 02-05-2003 at 05:22 AM.
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