3 Dead dastek unichips is this normal ??

[rra]

2003 BMW 330D very strong after 3 years unit died .
2007 fitted new one to another 2005 BMW after a few years unit cooked itself...I replaced with another new one remapped all again etc. It too died and I was advised to replace with new modern unit which I did.
Car has stood in garage hardly used for last three years due to company car and chip disconnected as wife not comfy with too much power.
Anyhow spotted loose wire on harness so took to SAC and had them check it they advised it needs to be mapped again as its more than likely wiped so I let them remap ,and besides lowest figures yet slightly disappointed left .Phoned next day to tell them remap left no power on top end compared to before.
Second day after car wont start again unit dead .
Im now loosing faith in Dastek Unichip is this the norm I know its now out of waranty again but still sucks. What other units are out there and who does them.

 

[Eon]

I have only heard bad reviews and horror stories about SAC. It might be because such news and 'stories' spread further and faster and have the ability to destroy a brand easily. The fact that they had to do a complete remap after one loose wire raises questions.

Anyways, I bought a second hand Unichip Q for my Bantam, which after installation has been remapped at least twice (by Koos Swanepoel Developments) after doing hardware mods to the engine. The unit has never given me any hassles whatsoever.

I recommend you take your car and unichip elsewhere to be mapped.

or

Chuck the Unichip and do a full remap of your car's ECU

 

[rra]

I have only heard bad reviews and horror stories about SAC. It might be because such news and 'stories' spread further and faster and have the ability to destroy a brand easily. The fact that they had to do a complete remap after one loose wire raises questions.

Anyways, I bought a second hand Unichip Q for my Bantam, which after installation has been remapped at least twice (by Koos Swanepoel Developments) after doing hardware mods to the engine. The unit has never given me any hassles whatsoever.

I recommend you take your car and unichip elsewhere to be mapped.

or

Chuck the Unichip and do a full remap of your car's ECU

My first one was done by SAC and was the first and ,they used my car to test and develope the plug and play unit. Which I have to say was ridiculously strong and I loved it. As at that time when you past some petrol jobs with your tractor it was unheard off .
Who can do the ECU remap I like that idea. and what sort of costs

 

[Gizmo]

SAC have never had a good reputation.
I have a dastek unichip in my E36 originally installed/mapped by RGM and then remapped by RBTS, never had issues with it and it's been in there over 10 years.

 

[sash]

My first one was done by SAC and was the first and ,they used my car to test and develope the plug and play unit. Which I have to say was ridiculously strong and I loved it. As at that time when you past some petrol jobs with your tractor it was unheard off .
Who can do the ECU remap I like that idea. and what sort of costs

There quite a few options, do some research on the forum and you will find out what option is best suited to you. We have advertisers also that can assist with diesel remapping.

 

[rra]

Ok ended up fitting new chip at reduced price hope I did right thing .
Here are results torque drops off too quickly but what the hell.

 

[Nikhil]

Thats power at the flywheel?

 

[Nikhil]

I think you have a boost leak. You power should be flat and your N.M. tore should only drop from about 3500rpm

 

[Farley]

I had one in a E36 323i and it was flawless, not a days problem

 

[moranor@axis]

the torque curve does not look right... i would take the car else where

 

[Auditor]

Those graphs look highly bogus. The maths doesn't stack up: 161 kilowatts at 4000rpm equals 384.2 Newton metres of torque. The second graph shows the torque to be 326.8Nm. Something doesn't gel.

For interest sake here are the calculated kilowatts given the torque as measured in the second graph:

2000rpm - 108.4 Kw
2500rpm - 129.0 Kw
3000rpm - 138.0 Kw
3500rpm - 145.5 Kw
4000rpm - 137.8 Kw

Now if you calculate the torque using the kilowatts in the first graph, this is what you get:

2000rpm - 608.0 Nm
2500rpm - 579.2 Nm
3000rpm - 516.1 Nm
3500rpm - 466.6 Nm
4000rpm - 384.2 Nm

The two graphs don't relate mathematically to each other, and for that reason I'd be highly skeptical of these results.

 

[rra]

I agree in fact my car seems to have better pull through revs without chip with chip it s nowhere near right.but Ive paid twice they will sort out as far as Im concerned would love to be able to get done elsewhere right now .

 

[Nikhil]

Bud seriously remove that crap before they break something and get a flash tune. Anything that can be tuned by obd does not deserve a unichip

 

[Nikhil]

Appart from that your power curve should be flat and your torque should be flat from 2000rpm to 3500rpm then fall away. Unless you have a boost leak or cracked turbo manifold thats a really crap tune:hammerhead:

 

[Auditor]

Nikhil I agree, and I think it's even worse than that; I wouldn't trust a single number on that dyno chart. In this day and age to dish up that slop to a customer is simply embarrassing.

 

[Pho3niX90]

I agree with Nik, remove the unichip, get a refund and rather get a software tune.

 

[rra]

I spoke to them and informed them its a really crappy tune .they thought I just want more power and that they already pushing fueling it to unsafe limits .
I explained it was not about more power but rather how it was delivered and how the power curve should look, but i get the feeling they don't get it. So I will take the frigging loss and save for new map somewhere else.