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Miss Firing Drama-microtech

SJR

By SJR,
in Engines & Forced Induction

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SJR Apprentice

SJR

Posted
Posted

hay guys iv just spend 20k on a rebuild of a RB30/26.

it seemed to run fairly clean on initial start up of engine.

have had the head off and slight tune on idol.

since this the car is miss firing n seems way too rich, fouling plugs and blowing alot of black smoke!

it is missing down low around the 2000-3500 RPM, it runs ok really low in the rev range n when you get it boosting or into the rev range it clears out.

i am wondering if anyone can help point me in the right direction, is this just the tune (i assume it has only been tuned on idol n full throttle not using the matrix mode for the microtech) or do i have a fuel or ignition problem and the computer it self?

could it have anything to do with the heat sensor in the block giving faulse readings, or injectors since they have been sittin for over a year while iv been building this engine?

there is so many things it could be if it not the tune, n i don no were to start.

this car owes me round the 50k mark n it got taken off the road a week after i bought it and has only just been finished now, a year n a half later.

you could imagine my fury as its still not right, any help would be greatly appreciated thanks

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Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

this will be the best advice you will get.

Take that computer out, burn it.

Get a Autronic / Motec / Vipec computer & install it.

get it tuned and enjoy your car.

If you keep playing around with the microtech you will end up spending a shitload more money on the car for no reason.

Change the ecu. change it NOW.

end of rant

Fastrotor Proficient

Fastrotor

Posted
Posted

I agree with Guilt toy. The LINK Storm does a plug in for the R33 (i assume thats what you have ?) ... The Vi-Pec is a LINK customised to suit Ray Halls specs. Both work very well.

And even if you keep the microtech, there is no excuse for not using the matrix mode, using the original single rpm load based mode is ludicrious.

I know the Micros have there fan boys, especially rotarys, however from a tuners point of view, there really is alot better gear out there with finer resoloution and much better features that give you the opertunity to make the car drive alot nicer in all the areas between full power and idle !! And thats where you spend 90% of your driving time !

That being said, it still sounds like the Microtech isnt tuned well, and if your adamant about keeping it, im sure you could obtain a much better driving experience while still using it if it was tuned better.

Gary

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