Unichip - get it or not?

[Kramrs2]

Hi,
Had someone (I think Ozz had) experienced Unichip in Audi's engine?
How was it? Worth it?

Thanks in advance

Cheers from Brasil

[quattropaul]

From what i hear,definately no [img]images/graemlins/shocked.gif[/img]

[Crafty]

I'd agree.

I've never seen a unichip setup work well on a turbo car.
There are a variety of complications with them, problems like signal degradation for example.
They are expensive and rely on the existing system. You need an extra module for boost control and AFAIK they cannot map on boost.

You'd be far better off getting a custom remap from AmD/Jabba etc. Or better still moving to a mappable ECU.

[Kramrs2]

Thanks for your advice.
The problem is I live in Brazil, where we have all gasoline with 24% of ethanol due to ambient regulations. This fuel is cooler and has a better octane than regular gasoline. But the steichiometric balance is richer than normal.
Then I have to work with programmable devices instead of “pre-prog” chips. I have also a little bit afraid of programming a full programmable ECU (things like air-conditioning enrichment and so).
Do you have another solution like a different piggy-back ECU or what?

Thanks again.
Mark

[qquattrO]

Stay away from the Unichip - it is an incomplete device and only deals with timing and fuelling, no boost control at all which means it requires a separate boost control device (AVC). This is all far too crude and a competent map of the Motronic microcontroller will do the job better. If someone wants a high-end ecu on the RS4, Motec M800 is the one to go for, assuming Motec Europe (or Australia) can provide a properly working loom adaptor for the M800 to connect to the RS4 wiring loom. So far (and I do speak from 1st hand experience), the loom adapter has not been made in this country. It is, however, being worked on.

q.

[Crafty]

Does *anyone* like Unichip ? [img]images/graemlins/roflmao.gif[/img]

Alternative to MoTeC is Autronic, at least as good at MoTeC but a damm sight cheaper.

PM me if you want any more details.

[Kramrs2]

Thanks for your advice.
I think that stand alone ECU is too much. I was just searching for an easy way to control my car. I did a remap, but I think it wasn’t how I expected.
I work in financial, but I’m an engineer, and I think that even I could do a better job.

Is there a cheaper (and easy) remap software and tool for motronic in the market in Europe that I can own and do the job myself?

Many thanks

[Crafty]

What you are after is a emulator for motronic, this is the sort of stuff that AmD/Jabba etc will use when remapping your car. AFAIK you are into thousands to buy one.. hence the attraction of a mappable ECU cos its cheaper, more flexible and IMHO will allow you to get better gains ( provided you can map a car of course ). Also lets you have other outputs for controlling water injection, intercooler sprays, NOS etc...

[keyser]

Definately get it, but be sure to have it properly tuned.

Here's my friends RS4's dynograph they Unichiped it in Sweden:


MTM's chip couldn't keep stable boost.

[Crafty]

Hmmm,

bit of a trade off isnt there, losses on power until the very high end where it gains.. torque is pretty power is it not ?

Mappable ECU would be the way to go [img]images/graemlins/grin.gif[/img]

[keyser]

his best 0-60mph 3.95sec

see this movie, it's in polish, but anyway....
it's real video... if you don't have a realplayer, you can get it from here: real ONE
http://www.sss.org.pl/video/audi.ram

[Andiroo]

Have to say I'm quite impressed with the flatness of the torque curve. I've only seen Sportec come close to as flat a curve as that [img]images/graemlins/thumbs.gif[/img]

Like Crafty says, there is a lot of trade off against the previous map (MTM) and obviously overboost is reduced dramatically. It will be a lot slower 0-60 and 0-100, but after that should start to catch up again.

Bit like the comparisons made between JR's MTM and my Sportec mods [img]images/graemlins/laugh.gif[/img]

Nice to see someone has spent some development time on smoothness rather than ultimate power [img]images/graemlins/wink.gif[/img]

Andiroo

[Bushy]

nice

what exhaust is that with a single outlet pipe?

[keyser]

what's more:
MTM now - means power with UNICHIP switched off, but ECU was remaped by the sweeds. Power graph after standard "420hp" chip from MTM is the "MTM before"....as you can see... not even close to 420hp

Bushy: it's custom exhaust.....
here's some pics of it

custom down pipes:




and exhaust pipes and mufflers:

[Bushy]

is that aquamist or your own system