Hi everyone i am new here and have a question for you all.

I have a ST205 and am thinking of getting a Destek unichip.
has anyone got one or recommend not getting one?
Thanks for you help

Waste of money only controls fuel.

Better of saving for a powerfc or link ecu etc.

Altering fuel alters timing on our cars which results in extream cases of a fubar engine...

Ok thanks for that i will cross that one out.

I have been looking for a power fc but never can find one for sale.
I used to have a mines ecu that cost me a lot of money in knock sensors.

I will have a look at the link ecu. Thanks a lot mate

Not strictly true

With the correct Dastek in the correct hands there are many gains to be has from the unichip. TrackToyFour had one fitted for several years mapped to around 340 HP with a few supporting changes. Switching to a full blown MoTeC ECU replacement fitted and mapped by the same company gained something like another 4HP.
So there is not a huge gain to be had in outright numbers. There is of course a whole world of difference in functional capability
Some may consider that the Dastek is a better bet as you get to keep the OEM Toyota self preservation mechanisms albeit the margins are much reduced

The problem is finding the correct hands.
This is now old tech and many of the reputable well proven solutions no longer support them.
Also from what I see they tend to run quite close to some of the lower budget ECUs in pure price terms and, sadly, most people when window shopping take no account of the true time required to make a complete map from scratch

On balance I would also recommend a complete mappable setup but make sure you know what you are buying into. There are swings and roundabouts here

Agree gains can be had with unichip but its a poor band aid and by the time youve mapped it and had it fitted etc its a few hundred more for something that does a hell of a lot more..

Emanage blue works on exactly the same principle but has ignition control also. But as with anything check with who ever is going to map the car what they can do and what they hate etc...

Thats spot on lads thanks for the help on this matter.

I will also look into the emanage blue.

Anyone know of anyone that can map the emanage in the northeast area?

I understood that the dastek did allow control of. Oth fuel and timing albeit with limited resolution.

Essentially it intercepts sensor signals and sends a different signal to the ecu to fool the ecu into thinking you are at a different air temp or boost pressure etc. as such it uses the standard Toyota maps but a data cell for fuel and timing that corresponds to a different operating point, hence the limited scope for adjustment.

The emanage I believe works in a similar manner but with greater control and mapping software available to the punter.

In order to establish which option of piggyback or full ecu is best for you I think we really need to know your goals and intended use.

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My goals are just to make it a bit more powerful.

I have rebuilt the engine with forged pistons and conrods and am busy running it in at the moment. To go with that i have a stage 1 tt turbo full hks exhaust and fmic and apexi boost controler.

I am not looking for massive amounts of gain and will only be a road car not for the track.

I am in 2_Oh_5's camp on this one, my previous job was as an OEM calibration engineer so I know what goes into a fully mapped OEM ECU, three guys and 8 months for a small manufacturer, much much more for someone like Toyota!

Therefore, if you are looking at making smaller modifications for road use I would go for a good quality piggy back unit.

For a full specification change with new cams, port changes, compression ratio and combustion chamber shape alterations etc, a fully programmable item is best. But this really needs to be backed up with time on an engine dyno doing ignition loops etc to get MBT for all possible combinations (cam timing etc). Then do the fuelling on road to get the most accurate maps possible.

I am looking at a new piggy back unit for my celica project car, I will do a full report as soon as it is fitted and running

Or buy a plug'n'play +30bhp ecu like this

http://www.ebay.co.uk/itm/Toyota-MR2-re ... 2c67b7805d

The blitz assess is very similar to the mines ecu I think.

Is that your ecu? if so have you had any problems with knock sensors blowing?

Not mine but I had one and was very happy indeed with it. I was getting 342bhp with Blitz, FMIC (with 2" outlet from turbo to core) and a cat at 1.1bar. Stock other than that.

No problems with sensor ever, I don't know any one that ever has.

From another recent thread:

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If at first you don't suck seed, try drier grain.

Sounds just like my mines ecu i had had what led to my engine blowing up.

When they are mapped over in jap land they are running on high octane fuel and was told that was why the ecu i had kept blowing the knock sensor then ended the pistons life by melting a hole in number 3 piston.

For the limited mileage I do in my ST205, I just run it on 99 octane, as close as uk pump fuel come to japanese fuel.

I used to have a supercharged imp with 13:1 compression ratio that I made my own fuel for, Toluene Xylene Methanol and avgas