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Hey mate, I've documented this fairly well here:
There's nothing you can do to prep for it. Just take it into a Tuner/performance shop and have them install and tune for you and ask them to do it in such a way you can pull the plug on the Unichip and the car will return to stock. I think they do this anyways but best to confirm. It's a safe guard in case anything were to go wrong with the chip out bush or wherever. It must be dyno tuned. Do not accept anything else!
The tuner will be limited with how hard they can push it based on EGTs. So the more supporting mods you do first i.e. opening up the intake and exhaust system, bigger (better breathing) intercooler etc, the more headroom the tuner will have to play with. I custom built an intercooler for my old Prado (see here). It didn't really bring the intake temps down noticeably but I got a significant increase in power following which to me suggests the stock intercooler is quite restrictive.
I'd start by googling Unchip dealers in your area/state. Failing that, here's the Unichip US website. Maybe you could contact them and ask where the authorized dealers are? I'm pretty confident any diesel tuner worth their salt would be experienced and equipped to do the job. And the 1kz-te is a very simple diesel engine. Any diesel mechanic should be able to work on it no problems! Though I know diesels are less common in the US so maybe it's different there?My prado has been shipped to the USA now, would it be possible that most truck diesel tuners will know what they are doing? Im not aware of any 1KZTE shops in my area. Also I am having a hard time sourcing a unichip Q4+ but I saw on HDautomotive that they have started selling the Unichip X for the 1kzte. would a unichip X work just as well?
Hi Sparky,Hello guys,
Got a stock 1kzte just curious on what to expect with a unichip installed. I am also looking for the wiring information as I would like to start prepping my system for when the ecu arrives.
Hi,Hello, I am considering the possibility of running Unichip on my 1993 KZJ78 5MT. Are you anble to check on, or does anyone know a dealers/tuners in the northeast United States? Otherwise, I’m considering a mechanical pump. Thanks.
I am about an hour northwest of New York City, but would be willing to drive a bit further, if needed. Thanks!Hi,
Which big city is close to you?
I have sent you a private message with the contact details.I am about an hour northwest of New York City, but would be willing to drive a bit further, if needed. Thanks!