Afr Guage

[Randon_I_Am]

As my sig says, i have a r34gtt and would like to install somewhere into it a afr guage, but i don't know what to get.

I've been looking just at Ebay so far and not sure if i need a narrowband, or wideband guage?

thanks for all your helpfull replies

[JonnoHR31]

why do you want one?

the gauges that wire into the standard narrowband sensors might aswell be used for drink holders, dont waste your money

proper afr gauges are hooked up to a wideband sensor through a controller, these are fairly expensive, which comes back to why do you want one?

[TiTAN]

if you really want one. http://wbo2.com/

its going to cost $400-500 though.

[Randon_I_Am]

figured it wasn't just a plug and play thing...

i want one just to make sure I'm not running lean before i get to the dyno, changed to z32 afm and gonna upsize injectors before i get a new turbo. and rather than doing it all on the day and have mechanics there working on it, i'll just install the z32 and injectors beforehand.

and yes i have a NIStune ecu so it's easy to change them in the software to get the car running OK but it won't be perfect...

This is my Noobie reasoning anyway, feel free to poke holes in my plan

[Randon_I_Am]

so basically if i can't get one for under $100 its not going to be worthwhile anyway...

cheers

[JonnoHR31]

just get it roughly right and drive it normally until its tuned.

or if you have the nistune software and buy a wideband you could tune it yourself...

[Randon_I_Am]

tuning myself interests me alot, I'm very new to it all and it'll be a learning experience... but without a dyno how do ya really go about it properly?

[R31Nismoid]

so basically if i can't get one for under $100 its not going to be worthwhile anyway...

Nope. It won't tell you anything. Totally pointless.

Just drive it off boost, will be fine.

[JonnoHR31]

never used nistune so not sure exactly how it works, but usually you use data logs from driving around

[aphid]

The old "Brake Dyno" is great for getting your afrs (fuel table) perfect, however to make good progress on the ignition table you'll need a dyno.. The old n00b tuner ethos of "wind up the ignition till she knocks, retard it a few degrees and she'll be right" really is very overated, although plenty of jap tuners seem to get away with decent results using this method =)

tuning myself interests me alot, I'm very new to it all and it'll be a learning experience... but without a dyno how do ya really go about it properly?

[James_03]

I run an AEM wideband on my gtr. Had to weld a bung into the first pipe to do it for the bosch o2.

http://www.aemelectronics.com/wideband-air...o-gauge-kit-745

They are reasonably priced, and the controller is integrated into the gauge itself which is good. The gauge also has a 5v output to come back into a laptop for readings.

Still probably a bit wank factor-ish, but it can never harm to know that the AFR's are good when you have the foot down.

Plus it gave me something to do on a boring weekend.

[Thelen]

I'm also interested in this, I looked at it ages ago for my prelude, didn't really come across any that were good and cheap, wasn't going to pay $500 for something. But $220 seems a lot more reasonable, anyone done that for a ECR33?

[TiTAN]

you also have to take into account the cost of the wideband O2 sensor which is again another ~$200

[zebra]

I use the Tech Edge 2j1 and LCD display.

Works fine what what I do as I log everything else off the ecu

[BH_SLO32]

I stumbled across a shootout of AFR gauges recently. Not a bad read.

Wideband_O2_Shootout.pdf

[paulr33]

any wideband solution is going to cost $400

if its sub $100 its junk and not wideband

if you dont know what you are doing with a wideband, then stop and dont do it

you can kill your motor if you arent careful. there is lots of documentation on wideband tuning and AFR tuning so its not something new

the consequenses if you get it very wrong howver could be burnt valves = rebuild light

[TiTAN]

I use the Tech Edge 2j1 and LCD display.

Works fine what what I do as I log everything else off the ecu

same setup i have, 2j1 + LA1 guage except my ECU does the logging + uses it for wideband closed loop control.

[James_03]

you also have to take into account the cost of the wideband O2 sensor which is again another ~$200

The AEM kit mentioned comes with with the gauge and Bosch wideband sensor included for $220. Everything you need.

[JonnoHR31]

i got a innovate lc-1 kit for around 220. works alrite, had a few dramas with it tho

[DVS JEZ]

AEM is American ??? so its 222 plus conversion and shipping?