Wednesday, 22 March 2017 09:19

Back in stock

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I am happy to report that I now have a new RobTune board available to replace the out of production Eprom chips that I have been using for the past 7 years.   As I type this, I have enough parts on hand to build a couple of boards immediately.  I am having more PCBs fabbed up and should have those ready to go in about 2 weeks.    Shoot me an email or leave a comment if you have any questions.

Read 2882 times Last modified on Wednesday, 22 March 2017 16:08


  • Comment Link Rob Monday, 12 February 2018 12:45 posted by Rob

    Hi Steve,

    No jumper would be 440. Jumper on position 1 would be 550.


  • Comment Link Steve Sellers II Tuesday, 06 February 2018 05:45 posted by Steve Sellers II

    Hey Rob, I received your selectable pcb and Im wondering is it jumper on = 440 and jumper off = 550 or the opposite ? thanks

  • Comment Link Rob Monday, 16 October 2017 16:23 posted by Rob

    Sean - I try to keep the stock numbers up to date on the product page purchase page. Currently, I have stock of the tune boards to build, but I do not have stock ECUs. This means I can install the tune for an ECU sent to me , but I do not have tuned ECUs to ship out.

  • Comment Link Sean Monday, 16 October 2017 05:00 posted by Sean

    Do you currently have any of these in stock?

  • Comment Link Patrick Sunday, 30 April 2017 21:18 posted by Patrick

    That's great, thanks Rob. Good luck with the Z32 MAF project... and then please, see what you can do about an EJ20K tune. Thanks again!

  • Comment Link Rob Sunday, 23 April 2017 14:01 posted by Rob

    Hi Patrick,

    The benefit of a MAF based EFI system is that the amount of air entering the system is measured, not calculated. This means as a general rule, pretty much any air or exhaust modification is accounted for by the MAF. This is also true for different turbos and intercooler changes. The system is very adaptable. There are a couple caveats; changes to the intake track can cause misreading by the MAF. It is best to stick as close to the intake setup as the tune was developed. The second is that the MAF has a maximum mass airflow that it can measure. If you go beyond this, the ECU cannot account for the additional fuel needed and will eventually lean out.

    I hope that helps.

  • Comment Link Patrick Friday, 31 March 2017 11:43 posted by Patrick

    Rob, that is great news!

    Although I've been working on my own cars for about 45 years (yikes!), I've only been a Subaru owner for 17 weeks. I've got a lot to learn! However, I've been trying to absorb as much knowledge as I can by pouring over various online forums... and I've read nothing but good things about the services you've offered the Subaru community. I was SO disappointed to discover that the engine I ended up with (the EJ20K) was one that you didn't offer a tune for, even though several years ago (from what I read) it appeared somewhat imminent. This latest news has given me renewed hope!

    I have a question...

    It's difficult to know who or what to believe when reading many posts in multiple forums, but I've read reports that making ANY kind of a modification to the intake or exhaust system (no matter how minor) on these engines requires a re-tune .

    So my question is, and this relates to whichever ECU/engine it's available for... How much from "factory" can an engine and/or its peripherals be modified before your 440 tune is no longer suitable? Obviously there are a thousand variables, but for example, would simply swapping out the stock STi muffler to something a little more vocal be enough to lessen the effectiveness of your 440 tune? I don't plan to make too many mods to my '98 Impreza STi anyway, but if there's a good chance that your 440 tune will someday be available for it, I'll avoid making any modifications that might limit your 440 tune's effectiveness. So what's your advice? Thanks.

  • Comment Link Rob Thursday, 30 March 2017 15:43 posted by Rob

    Norton - Thanks! It actually wasn't that fast. I had been working on this on and off for the past 2 years and 4 different prototypes.

    Patrick - This is certainly not a dead issue for me. I have made good, albeit slow progress since any public updates. The first gross tune is pretty much done. The tune board itself is the biggest hangup. As you know there isn't an easy eprom socket to plug into. After that, it comes down to testing and fine tuning. The good news is that my ej20g work including my latest tune board and the Z32 MAF project can be directly applied to my ej20k tune. Thanks for patience and continuing to prod me a along :)

  • Comment Link Patrick Thursday, 30 March 2017 14:38 posted by Patrick

    Rob, I'm a Subaru newb. I got my '98 JDM Impreza STi wagon at the beginning of December last year. Since then I've been reading plenty of old threads in various online Subaru forums about the EJ20K engine.

    Up until four years ago, there was quite a buzz being generated by a lot of very excited EJ20K owners about your "upcoming" tune/services that were going to be offered for the EJ20K... and then... nothing. :(

    Is there ANY chance that you might be able to re-visit these plans... or is it now a dead issue never to be dealt with again?

  • Comment Link Norton jefferson Wednesday, 22 March 2017 16:04 posted by Norton jefferson

    Hey Rob super interested in one of your new chips!!!! So happy to see you found a solution so fast.

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