Ok so i have been reading posts for the last month if not since i got the max 5 years ago on everything from upgrading to headers, BBMAF, piggyback systems and mean to read all the info with a WBo2. So now im getting more confident in taking the plunge on electronic upgrades.
my ?s are basically on how to read and tune the data so it makes the car happy.

Ill make my questions short.
1. i will be installing a BBMAF (3" id) when its get nicer out. i was reading Nmex's post and he suggests the SAFC2. So once i get the cash ill pick that up. Should i get the SAFC2 over the SAFC VAFC or VAFC2?

2. i know i need a WBo2 but i dont know which one is good, as well as what i should expect to pay. Can i just get a sensor and gauge so i can read whats happening to the AFR.

my engine mods are CAI..with BBMAF to follow after winter, vias block plate (up high feels like a nitrous shot), test pipe and flowmaster muffler. i know not a lot but once i get the BBmAF and tune i think ill be happy till i get cash for headers.

thanks for all the replies and NMEX, 6spd, or SR20 ive read all your informative posts just looking for some answers from the horses mouth so to speak

 

good luck lookn for nmex or sr20den..i havent seen a post in the 5th gen section from them in months..

 

^^^ ive noticed thatt , thought id give it a shot... doesnt need to be just them.. if anyone can help with my questions please reply

 

VAFC2 has more tuning points so it allows you to have a finer fuel curve. Get one of those.

And really? Have you been to the All Motor Forum. This is stickied http://forums.maxima.org/all-motor/5...ther-info.html

Anyways, some quick searching on eBay shows that a wideband O2 sensor with the gauge goes for about $200 new. (Innovate LC-1). I'm sure you can find a used one somewhere as well.

 

no my bad i didnt go to the all motor area. seemswhen i look at the uego, or lm1 or plx or whatever they look around 350 or so. i get the more tuning points but from the posts ive read regarding a bbmaf the consensus was a safc2 over the vafc2

 

AEM UEGO seems to be $218 at most if you look on eBay or Google Shopping. Don't even think about PLX, and the Innovate LM1 is the more expensive wideband, the LC1 is the basic model.

General consensus?

VAFC2 has the same ability to change the sensor configurations for BBMAFing. Page 46 of the installation manual.

http://www.scribd.com/doc/12609713/Apexi-vAfc-II-Manual

 

moncef, yea i went to the all motor after you told me to go there and see nmex just posted a few minutes earlier on a thread. ok so a vafc2 it is as i know it has more tuning points. and ill look into the aem uego. i think i might wait til feb or march to install this stuff once i get it. it is single digits right now with 40mph wind and i dont feel like getting frostbite hahah.
with the aem, can you connect a laptop to it in the car and record a run so you are able to adjust fuel. i think i read somewhere it records, this is datalogging right?

 

Datalogging = recording a run and making adjustments according to the data pulled from that run.

AEM UEGO is what I have. And I cannot datalog to a laptop, I've got my wideband hooked up to my e-Manage Ultimate which logs every engine parameter including air fuel ratio.

If you're gonna buy an AFC and wideband you'll need to get a Zeitronix ZT-2 or Innovate LC-1/LM-1 which have USB interfaces to talk to your laptop, since your AFC will not hook up to a laptop.

 

ah ok damn this **** is gonna be expensive... gotta keep and eye out for used stuff

 

Good luck

 

I actually just started to tune my car myself.

I bought the Innovate LC-1 wideband for $190 off ebay. It comes with an LED gauge and all the hardware required for the install.

Also have to remember that the LC-1 connects to the computer by means of a serial port, so if you don't have a serial port on your laptop, you'll need a USB to serial adapter.

And I have a VAFC II because it has more tuning points, as mentioned above.

 

I recommend the zeitronix wideband, mostly because it comes with software, datalogging and it tells you what your afr is at whatever rpm's you are at without any extras. I think it is the best value for the buck. It graphs out your afr vs rpm for every run you make.

 

for the lc-1 is this what i would need... anything extra other than a cord to connect to the laptop?
http://cgi.ebay.com/INNOVATE-LC-1-Wi...item56386069f0

or this?

http://cgi.ebay.com/ebaymotors/Innov...Q5fAccessories

 

The problem with the LC1 is that you wont be able to log RPM without purchasing an extra device.

 

Very true

I had to video tape my VAFC II rpm gauge and my laptop at the same time to make myself a graph of AFR over time. LOL

 

Does the e-Manage Blue have a built in datalogger that you can connect your Wideband to?

 

no, it datalogs, but you can't plug in the wideband.

 

Then E-manage Ultimate would be the way to go.
Or buy the RPM cable for the LCI. I saw a guy here selling one for around $100 a few months ago.

 

Weak















kidding

I didn't think you could get RPM cable for the LC1, the only P/N I can find for an RPM cable is the LMA-2 which is for the LM-1 wideband.

Which is why I mentioned the AuxBox, because it can pick up a tach signal and log it (LMA-3)

 

^^^^^^^You're right...I hate you.. I found the F/S thread.

http://forums.maxima.org/general-max...converter.html

 

Of course I'm right

 

hahah maybe ill do that. keep the cost down and still be able to tune ... although thatway may take a bit longer to do hahaha


actually i have a question on all this stuff. as you can see what my current setup is... i have the 3" bbmaf but just not installed obviously. after getting the vafc and a af wideband will it gain noticeable powerand be a worthwhile investment. what i mean is after spending for the vafc and wideband if it is only going to add 5hp since i dont have headers (and prob wont for a long timeor ever) i may not do it. if it can make a pretty good diff then it would be worthwhile. what do you think?

 

Search

 

BBMAF is mostly for throttle response and to help the engine breathe better. That usually means more horsepower. And the search function sucks **** right now so I don't think you will find much info.

 

http://forums.maxima.org/all-motor/4...iscussion.html

http://forums.maxima.org/all-motor/4...iscussion.html

 

Also, if your end up installing the BBMAF, you may want to mess around with the narrow throttle map feature on the VAFC II.

You can adjust for anything below 39%, this way you can get your long term fuel trims as close to 0 as possible.

 

Knight how is your 82mm MAF/intake pipe coming?

 

I wish there was a larger throttle body to compliment the larger MAF.

Maybe there's another DBW throttle body that can be retrofitted. VK45 or VK56 maybe?

 

Moncef ive read all the BBMAF threads, headers threads, vafc, safc and so on.. ive been researching for god knows how long now. all the info gets overwhelming and then you get one answer that conflicts with a different answer. i just wanted to get some fresh takes on the subject

knight, was it you or rodriguez that said after installing the 3" maf the car felt awesome. something like 12 more hp!!

well i know im gonna get crap for this but i just wanted to see what would happen. i have my bbmaf all set and ready to install. so yesterday i put it on like this TB>3" id 6 " long int pipe w pcv hose>bbmaf> 2.75"id 22* pipe> bbk oval air filter. well on the first 2 start ups it ran like my 68 camaro on a winter day.. gasping for air (or fuel), sputtering so i shut it down. Tried again and it idled fine. so i took it down the street 1/2 mile and all i can say is glad i didnt get stranded. giving it gas the engine hesitated and bogged and just didnt do good. needless to say i went back to what i had. now i read in the post with rodriguez when he put the BBMAF on with no tune and his ran fine but i think he already had a vafc or safc installed so maybe that had something to do with it. so yea when your told you need a tune along with it thats the truth.

 

It's all in the eye of the beholder, but look at the first dyno from 6spd_Hayes with his BBMAF (no tune--note his AFR is off the scale rich however, and every car is different so make sure you can monitor it). Sizeable gains throughout the RPM range. Basically, on a 5.5 gen, it will be worth it if you did a 3" intake + tune, but it will be MORE worth it if you have headers/exhaust. You can't really quantify it though unless you strap your car to the dyno.

Knight has the BBMAF, if I remember correctly.

Try a 3" pipe all the way. If you have it reducing to 2.75" near the filter you nullify any gains in actual volume, and since the intake pipe gets bigger towards the throttle body, you lose intake velocity as well. Get a 3" velocity stack and 3" diameter filter.

 

I have not installed it permanently yet. I did install for a test but I did not go for a drive. I know it will be starving for fuel. But at idle (closed loop) the ECU will learn to compensate so I was not too worried. I think it would be safe to drive the car under 2k rpms with no ill effects but the AFR would be way off above that.

The only reason I have not installed this yet is because I was laid off from work for about 5 months last year. I lost about 50 K or more in wages. I can't afford a dyno tune at 160/hr right now. Yes it's expensive up here, we don't have a lot of places we can go. But the guy I go to knows his stuff so paying a little more gives me peace of mind that my car won't fry.

My setup is an 80mm tube approximately 17" long with a velocity stack. I have high hopes for it along with the spacers and block off plate. Hoping to get minimum 260 at the wheels after a good tune. I also snagged a set of g35 injectors (20cc bigger) For 40 bucks so they have to be installed as well.

I need to find someone who can sit down with me and show me how to use the e-manage software to tune my car. I just have no clue how to navigate all the menu's. I'm hoping in the spring that my dyno guy will keep his word and show me how to go through everything so I can street tune.

Here's a video...

http://www.youtube.com/watch?v=P90VnjMh5EQ

Definitely needs a tune, sounds nice but there is some hesitation at midrange, but I think my MAF may be on the way out as well as I get some hesitation with my present setup.

 

I had a BBMaf when TS flashed my car. The gains were minimal and IMO not worth it if staying N/A. Maybe more noticeable if you were boosted with bigger injectors, etc.

 

yea like knight said after a few tries it did compensate. pulled out of the driveway fine but when giving light throttle it started acting up. so i said nope dont kill the engine and wait for atune.

rroderiques, i thought you made 12 hp gain. that seems pretty worth it. did something change?