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Maybe try and clean the idle air control valve on the back as if it is a little bit clogged it may dip your rpms. It could also be the MAF sensor, but if the car is running good i doubt it. Lastly you can try and open the butterfly some more by adjusting the screw and nut that the accelerator...

I think ineed you can use 1.4 cams on a 1.0 pretty much PNP. You get more duration (222º vs 196º) and lift(7,94 vs 5,59 mm) from the 1.4 ones gaining some more torque and hp all along the rpm range. *Not fully sure on the cam specs given but most certainly good*

Don´t know personally if there are difference but i had a look at the FSM and found some differences: -connecting rod center distance -"a" dimension on pistons -piston pin clearance It seems that if there is a difference they are minor changes, im gonna post both specs or you can...

Probably the IAC valve dirty or not working, you can take it out and clean it. If the car runs ok except when stopping probably not the MAF sensor. If the IAC cleaning doesnt work you can try and open a bit more the idle screw on the back of the throttle body. Lastly i would check that when the...

I don´t know much about the coilpack version engines. As you say due to regulations its possible that it has a bit less power due to different maps but i doubt it as it has far more modern electronics for control and pretty much all the maps run closed loop with 14.7 AFR aim ratios (Ignition...

The engine it´s the same, only difference i think the newer one should be the coilpack version and not the dizzy one. Maybe a little more weight on the newer model but not too much to make a difference. Probably a good maintanance should put both micras on the same level performance wise. You...

I don´t know about improving the CVT performance. Otherwise there are plenty of threads talking about improving handling and engine performance. Cheap and easy options: -1.6/1.4 Almera airbox swap -Lowering springs kit (H&R and Apex have 30mm kits) -Decat (If you cant get cheap headers and...

Hi everyone I know this thread is been talked so many times but i cant seem to work out my problem! Anyway just resolder my MAF circuitboard and the car runs much better at lower revs but when warm it stays at 1200-1400 rpm (which it didnt do before). It is not a sticky waxstat as i have checked...

Well then probably it´s a 32kB file (for sure the software knows more than i do ahahahaa). Anyhow you could try adjusting yourself the limits to 0x8000-0x10000 which would be 64kB size. Then open the file with any hexviewer and see if 0x8000 and onwards is either FF for empty space or any data...

74B05 its supposed to be 64 kB (i could be wrong as i am talking from memory). when i was doing ECU chipping prototypes 0000-7FFF address´ were reserved for RAM and various other things like IO. So I would start in address 0x8000, thats where ROM data is stored

I would say as a 99' one pretty sure it would be the full size ECU. Anyway you just need to take one panel from the footrest area to check it out. 1U210 , 0U400 , 1U203 , 74B01 , 74B05 and 74B61 should be the serials for a 64 kB ROM full size ecu just in case you find it useful.

Yeah probably the fuel gauge is acting weird. If the car its running good you should get at least 300-350 miles. Check for any obvious leaks under the tank or engine bay area while the car is running or even when parked. You could pack a fuel can on your car and see how far you can go.

Curious that in 1997 they built the engine but apart from ITB´s and full exhaust it looks pretty stock. Same bore and stroke (Stock crankshaft but maybe forged or something??) and intake and exhaust porting isnt drastically enlarged (from what i have seen on the schematics). Have to take more of...

Hi guys just found on FIA´s historic database 2 homologation documents for the k11 and thought of sharing them here in case someone finds them interesting. Here is the link just in case: FIA Historic database

If you really wanna see the fuel map and what values are used at any given moment use Nistune´s software (use the free trial), although for the tracer to work you gotta use an older version (i use 1.2.39 ) as the newer 1.4v for some reason doesnt detect the load axis value a.k.a TP. As for the...

Yeah i´m using the half ecu non nats version

Thanks for the quick response .Maarten! Yeah already checked that thread. The pinout on that B13 daughterboard for the 40 pin header is not the same as in the micra ecu´s. Anyhow thanks for the reply.

Hello guys! I´ve been working on some rom boards for the prefacelift micra k11´s with the 20x2 header. Made some prototypes already with 27sf512 eeproms but can´t seem to make it work yet. I have gathered some information about the cpu (M37791E4TJ) and header pinout in case someone is...