mines ecu?

[fitch9014]

Is anyone using the mine's boost up (stage 1?) ecu? I happened upon one recently and have been very impressed...approx. 35 mpg highway and about 29 combined. However, it seems the car is running very rich and I realize most boost up units are going to enrichen the mixture which is not that great, but is preferable to leaning out. I also know I'm not getting anywhere near standalone, but if someone's out running a "chipped" japanese ecu, could you let me know what's what? Like are you running more rich, no difference, what? I'd like to run the diagnostic from the fsm, but is there a way to reset the ecu without messing with the sacred tape, like just unplugging it for a couple of days? These ecu's can't be that bright, can they?... As always, thanks, any and all help is appreciated...

[Sil40sK]

Just wondering, are you running your stock boost solenoid? Because the reason it's probubly running rich is because the Mine's Rom Tunes usually increase boost levels, via the solenoid, i.e. more boost needs more gas, which might be why you're running so rich. Just a thought, that's what my VX-Rom did at least. As far as unplugging it, or figuring out a way to not screw up the tape, there isn't really one. Sorry. Anything else you need regarding these ecus, let me know.

-Alex

[tattman77]

My engine set came with a Mines ECU. I don't know anything about what was done to it but it does run super rich at 10 psi. The motor had and HKS electronic boost controller on it, minus the part that goes in the car. I think the previous owner was running pretty high boost because the timing was off and the turbo only lasted a month after i got it.How can you tell what is done to the Mines ecu?

[Sil40sK]

Usually it's put on a clear sticker in the bottom left-ish corner of the ECU. IT should say injector size, then turbo size, then a few numbers, (not sure what they mean, prehaps boost or ignition numbers of some sort?) You could also probubly send it back to Mine's to get it re-tuned to your specs.

[89'ClubK's]

Sounds like the best idea, though it may take awile due to the language barrier. I've heard that a JDM tuned ECU can't work b/c they're tuned for 110 octane gas. I may be wrong, obviously it works for some of you.

[Sil40sK]

True they are tuned for 110 octane; but in Japan they use a completely seperate Octane rating, it's not the same octane rating we use, so their 110octane is roughly equivilent to our 100 octane, regardless though, that's why you can just get an safc for fine tuning adjustments

[Nunook]

maybe because of the octane difference its causing the ecu to run on the knock fuel map. Which should have a richer fuel curve. I'd love to see the bin for the Mines ecu.

[89'ClubK's]

May be a little off course, but what is your guys take on the SAFC II?I've been told the CA doesn't work well with it. Mine works great!Anybody else have a problem with it?

[fitch9014]

maybe because of the octane difference its causing the ecu to run on the knock fuel map. Which should have a richer fuel curve. I'd love to see the bin for the Mines ecu.

how would i check the bin? and like i said it's the boost up unit which is apparently a slightly rich setting for a stock turbo ca, i think it probably removes fuel cut and speedlimiter, too (probably the same), i tried some octane booster a couple of times and it seems to seems to run less rich, but it's also hot as hell here lately, so maybe...i dunno really, the car gets fantastic mileage (25 to 35mpg), and it seems okay on the gauges. i'm running about 9lbs (~.7 bar) the coolant gauge is below halfway, i've got a sr20 t25, apexi intake, fujitsubo exhaust, hks actuator, greddy bov and the stock(!), soon to be remedied smic. my car's sort of a test mule, so i'm going to try some different things, different ecu's, i kind of like the idea of an safc. do you need a lamda sensor? that is the o2 sensor, right? thanks for all the input, is there anyone out there who makes a different "chip"? i know i've seen them around on the forum, get back at me. thanks again.

[tineira]

the MINES rom does change the limiters. Speed limiter is set to 510 km/h, and rev limiters to 12750 rpm. It sets TTPMAX to 255, and does run VERY rich at high engine speed. The timming is somewhat retarded compared to stock ah high loads and rpm.

The only thing that is "special" about the MINES tune, is that its the only one that I have seen so far that changes coil dwell time.

Nunook, sorry I can't send you the file, but if you have any other question just send me a mail, (mi nick) at gmail com

[fitch9014]

okay, i just swapped back to a stock ecu and drove an hour home. man, what a difference. this car went from okay to flaming turd in the time it took me to swap ecus. anyone have a chipped ecu they want to hock?

okay, so not really flaming turd, but i noticed a slight difference, like taking a sugar pill for a headache, still....

[240sxbobbis]

how much will you sell the ecu for i need one email me please at http://[email protected]

[hnsenter]

HOw are u getting 35 mpg on highway and be running rich?

[Buddyworm]

^Probably only runs rich on boost/high load.

As to it running rich at high engine speed, makes sense, rich mixtures burn faster, and the faster the piston is moving the less time combustion has to take place.

I would also love to get my hands on the rom image from this thing. Could you take the cover off the ECU and see if they have the chip epoxied in?

**Edit: Also, an FMIC will lean your mixtures out a bit.