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Tuning Box....


LIAM.MCGLOIN
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I am looking to install a tuning box in my Avensis.would like to know from anyone who has installed one.performance differences.!fuel differences.! how much they cost?

..My Car....

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They are usually for diesels. they piggy back the ecu.change the preassure on the fuel regulator or something to this effect.suppose to be just a matter of plugging them in.It for my D4D.

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The guy to talk to is John Barker of Tunit in Lancashire, they have dealers all over who can fit. Go to www.Tunit.co.uk to find the nearest dealer to you.

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  • 2 weeks later...

I've fitted a box from powerklick in mine. Torque is remarkably better and HP also better, but only relevant for topspeed

Do have problems with it though - at speeds around 140 km/h and decellerating in gear, causes the car to jump into safe-mode, meaning loss of all power, I have absolutely no idea as to why.

Restarting engine gets the car out of safe-mode, but management lights stays on.

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I have a Tunit fitted to my 52/2003 Avensis D4D, and its about 140bhp now, with an equivalent increase in torque. It does seem the D4D is quite sensitive to tuning. Luckily I live quite near Tunit HQ in Chorley, and they set the parameters on my box to compensate for the engines sensitivity. I think to get it perfect for your particular car and not cause it to go into limp home mode takes a little bit of tweaking once it is installed. I would recommend it though, I have an increase of about 5mpg, plus easily enough power to give the latest 138Tdi offerings from VW/Audi a run for their money.

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The company I've bought mine at, is also offering to tweak it - so I'll get it sortet out at some point, only problem being that I am not living near by them

Haven't gotten a better mpg out of it yet, but have also only been driving it on holiday through germany till now, so we will see when I have completed a normal tank :-)

I maxed at 205 km/h according to GPS btw. A friend in his tuned Picnic 2.2 TD 136hp had no chance at all and another friends Carina E 2.0 had no advantage until we hit 170 km/h. This is on 18" and fully packed - I'm satisfied :D

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