Ok so as most of you know i bought a 99 with mevi setup already on it... im throwing 7 codes as of now swirl valves,which wont matter cause i got a 97 engine i jeed to repin my 97 ecu and put it in to eliminate that code and i got heated o2 codes for bank 1 sensors 1 and 2 which i assume are the cali sensors? So those should be eliminated when i swap the ecu as well... but my egr system is throwing a code along with map sensor solenoid code.. now if this was setup correctly i assume my egr and map sensor should work properly??? If not does anyone know how it should look.. i know a few of you know about this,my car will not pass emissions without these... so therefore i need to correct it asap please help me out here mevi gurus

 

I'd recommend going with an 00VI and ditching the mevi. It also produces more power.

 

Yea its been on the car since i got it.. plus im pretty much done with performance mods... its my daily driver so i just want to fix it.. if its all together properly id rather replace map solenoid if need be along with egr versus payin for repairs and a 00vi... if i want an 00vi ill do a dek swap...besides 00vi gains arent much more than mevi...

 

Ahhhh but the MEVI loses to USDM OEM manifold down low and attempts to make up for it up top, sort of like VTEC Hondas. Assuming normally aspirated, you can only really really take advantage of the MEVI if you up the rev limiter.

Myself, I don't quite feel comfortable with the DOHC V6 head spinning over Nissan's rev limit.

With the OOVI, it's gravy all over the power band, top and bottom, and you don't need to up the rev limiter.

DW

 

Ok i can see that... you do provide a good point there... but the 00vi also needs an rpm switch and its not direct bolt on....i could get all parts for a 00vi swap easily for 100 bucks maybe 125 at my local jy theres like 10 2000-01 maxs sitting there dying to be stripped

 

Yeah, that's the weakness of the OOVI, more complicated install.
Installing an RPM switch is nothing, and the MEVI needs one too, so that's redundant.

Good things don't come easy

DW

 

didnt say they did...i already got a rpm switch on my mevi...my mevi works flawlessly....
i would just have to find a list of the items needed aside from 5th gen coils and uim...i may be persuaded into doing it and selling my mevi LOL

 

hmph, never knew this was out there....

 

never knew what was out where?

 

TL;DR

Please post all of your codes in a list, than you'll get the answers you seek.

Really?

With a proper tune the 3Liter VQ can safely spin at Least 7200 RPM, I believe the valves float at something like 7800 Or something though

 

Moncef spins his 3.0 De-K a bit past the 7200 to around 7500, but yeah, it can safely spin to 7200.

 

Ok ill grab the codes today one i remember i believe was p1145 im pretty sure

 

Ok the codes are p1105,p1165 and ,p0403

 

 

The swirl valve code is because swirl valves are only on cali spec engines which was stock for 99 however i have a fed spec 97 engine in the car...as for the map sensor its just dangling under the hood chillin but no vac line hooked to it...where does the vac line belong??

 

 

Get a '97 5spd fed spec ECU.

 

Got one, just need to pin the harness... crank sensor pin is different on 99 than rest of 4th gens.. or so ive read...

 

All of your issues have absolutely nothing to do with the MEVI. Whoever tinkered with your car before you got your hands on it messed things up. Things may be indirectly tied to the MEVI due to stupidity as a result of doing unnecessary things during the MEVI install, but that's no fault of the MEVI.

 

Agreed...

 

Thays what i am thinkinbut someone that knows mevis would know better what its suppose to look like

 

Exactly, the fact that your motor is out of a 97 and your running the 99 ECU seems to be the souce of your issues.
I know the Evap stuff is routed differently on the later models.
As many have said, runnging the MEVI without an extended rev limiter is actually killing power in the low end and your not getting the real benefits of the MEVI if you cannot rev past 6500
Now if you were bale to tune, or had a reflashed ecu you could pick up some power that way plus get the extended rev limiter.

 

That's dope

 

the first thing i would do is make sure all of the vacuum lines are routed properly. theres a diagram on the underside of the hood, follow it to the best of your abilities.

 

As flava stated i got a 99 cali ecu cause my car is a 99 se-l ...running a 97 fed engine... so certain things are done differently... has anyone ever actually posted showing they repinned an ecu ?? I got a 97 ecu but havent installed yet cause im not gonna play with ecu wires in 20 degree weather... when it warms up i plan on it but until then im investigating smaller issues... but if they could all tie into.my ecu i may have to drive the beater for a bit

 

Not sure if this may be a problem if you downgrade your ECU, but 99s have a digital odo whereas the 97s had an analog one.

DW

 

Sounds like his best bet would to be to find the factory U.S. spec UIM and ditch the MEVI instead of changing out ECU's. That's probably what I would do.

 

Ditch the mevi?? If i do that im switchin to 00vi

 

And i dont think that the analog vs digital will effect me...what will is the crank sensor pin out on the two diff ecus..

 

The ECU connector is the same for all 4th gens (96 - 99). The crankshaft sensor is the same for the 97 & 99, same wire colors, same connector, same pinouts. The signal from the crankshaft sensor is on the white wire of the sensor and goes to pin 49 of the ECU.

 

So youre tellin me that its a direct bolt in?

 

Its not the manifold, but the emssison itmes such as the evap and EGR and etc.

No, here....
http://forums.maxima.org/4th-generat...ml#post7208760

 

Thanks bro i been searching for a while and for some reason never came across this...thats a biggggg help.. now if only this weather on the east coast would warm up i can repin it and call it a day for that... i love that it deletes NATS also...