a/f ratio gauge

[goldollar]

whats the best a/f gauge, the only one i can find is autometerbut alot of people say they are inaccurate

[I H8 UR DSM]

Defi, HKS, Greddy, Blitz, Apexi, etc etc etc etc etc etc etc etc .....

[hokiruu]

its practically worthless. what can you read from an arc of rainbow colored LEDs that zips back and forth about 50 times a minute? The only cooler one I ever saw was a Tomei that read "Rich" and "Rean" but I think it got discontinued. I'm not kidding. Most tuners either go with a fairly, but not extremely accurate EGT reading or an extremely expensive and accurate wideband O2 sensor. (about $1,200). Since the Autometer is practically a toy and the wideband is too expensive, I'll probably gauge via an electronic EGT gauge. You won't be able to tell exactly what the A/F ratio is all the time, but you will know when you are running too rich or lean based on EGT. Hotter=leaner /Cooler=richer. hope this helps a lil'

[goldollar]

how do you monitor it via egt, im learning as i go so please bear with me , and lots oh deatils please:)

[goldollar]

oh opps i know how an egt works, my bad i tought you ment like use the egt gauge through the o2 sensor or something , but the problem with egt is where to tap the probe and how accurate that would read, oh and would it be a good idea to use an a/f gauge with an egt gauge

[hokiruu]

Defi, HKS, Greddy, Blitz, Apexi, etc etc etc etc etc etc etc etc .....

All I've ever seen is EGT, but not A/F gauges from any of them. Unless that's what you meant. If you know where to see/get thesecompanies' A/F gauges, please let me know. PS- Electronic is the way to go from what I understand mechanical is too jumpy and erratic to be useful when you're driving.

[I H8 UR DSM]

look on our site if you'd like for Defi gauges, or their site...

Autometer A/f arent totally worthless...I do run an EGT gauge amoung others, but my a/f gague let me know when my fuel pressure reg broke, and i was pissing fuel out of the fuel rail, i really wouldnt have known as soon if my A/F gauge was running lean...It is basically useless if your looking for a specific a/f #, but it does help make sure you are running rich, and not too lean when u reach full boost, and if you do have a fuel problem, it would let u know your running lean.

[I H8 UR DSM]

Greddy A/F:

http://www.greddy.com/products...e.htm

[goldollar]

so it is a good idea to run both, cool. by the way whats are good egt temps, and what are bad temps, , cause i know for supras 1400 is a good number

[I H8 UR DSM]

defi d gauges:

http://www.rollhard.com/defidgauges.htm

[goldollar]

damn, the defi is way less cheaper than the greedy, but has anyone ever had any experience with either a/f gauge, good or bad

[slow s13]

air fuel can also help you determin when your fuel system cant keep up anymore. Running to lean under max boost you back down the boost.

[themadscientist]

The only cooler one I ever saw was a Tomei that read "Rich" and "Rean" but I think it got discontinued. I'm not kidding.

I have that one, I'll never sell it:D Tomei caught the mistake and new ones say "lean", my buddy has that type but he can never tell if he's "Rean", I can!The Tomei and Trust are excellent units, I have the Tomei in the 180SX and the Trust in the Silvia. You can't go wrong with either one.

[I H8 UR DSM]

damn, the defi is way less cheaper than the greedy, but has anyone ever had any experience with either a/f gauge, good or bad

Defi makes great gauges, Eloy uses them in his MR2, and SPi has them in their supra and is300....the new BF gauges are incredible.

[I H8 UR DSM]

http://www.defi-shop.com/product/dl/dp/dp_top.htm

[hokiruu]

oh opps i know how an egt works, my bad i tought you ment like use the egt gauge through the o2 sensor or something , but the problem with egt is where to tap the probe and how accurate that would read, oh and would it be a good idea to use an a/f gauge with an egt gauge

I am not sure where you would wanna tap the sensor on an SR. Generally you want to find the temp of the gas as soon as it can be considered "exhaust". In other words, as soon as it leaves the block before the turbo. If anyone has done this, can you please explain?

[hokiruu]

I H8: Thanks for the links. Yeah, the masked black face and opening/closing mode on the Link Series are smooth as hell. Not cheap, though! However the D Gauges are unfortunately mechanical. Some say that they don't like mechanical as much as electronic because they can be skittish and jumpy, making them hard to read while driving.

[I H8 UR DSM]

I am not sure where you would wanna tap the sensor on an SR. Generally you want to find the temp of the gas as soon as it can be considered "exhaust". In other words, as soon as it leaves the block before the turbo. If anyone has done this, can you please explain?

Its arguable, so i'll just say the most popular place to mount the egt is in the 4th runner or the exhaust manifold, the one closest to the firewall, before it meets into one....some people also run them in their downpipe, which would obvious have different comparable egt temperatures.

[I H8 UR DSM]

I H8: Thanks for the links. Yeah, the masked black face and opening/closing mode on the Link Series are smooth as hell. Not cheap, though! However the D Gauges are unfortunately mechanical. Some say that they don't like mechanical as much as electronic because they can be skittish and jumpy, making them hard to read while driving.

True, but the A/F gauge would still be electrical : )

[I H8 UR DSM]

I am not sure where you would wanna tap the sensor on an SR. Generally you want to find the temp of the gas as soon as it can be considered "exhaust". In other words, as soon as it leaves the block before the turbo. If anyone has done this, can you please explain?

I guess it doesnt hurt to have both... a a/f gauge doesn really tell you anything, just hints to you that there could be a problem...you can basically tell if the car is running lean or rich by if the egt's are too high or too low (only can really tell by experience w/ your own car)...but at that time, when u see high egt's, its nice to be able to look at the a/f gauge, and see that you are running lean, and be able to correct the problem. I pay much much more attention to my EGT than a/f.

jessehttp://www.rollhard.com

[60dash1]

You can get a wb 02 from tech edge or fjo, will run around 550 complete for the te and 750 for the fjo.Both can hang with the best.

[BuudWeizErr]

I really don't like narrowband A/F gauges. I have one and it just kinda does whatever it wants. Sometimes it doesn't display anything, other times, it displays full rich, sometimes it works normally, sometimes it just jumps around doing whatever. Maybe my o2 sensor is on its way out, but I doubt it. I wish I had gotten an EGT instead.

[I H8 UR DSM]

yea sounds like an 02 sensor issue, or wiring

[goldollar]

thats cool ,you guys have helped out alot. Im a big mk3 supra fan as well as the 240 and alot of the mk3 guys tap at the collecter or the 6th runner and a good egt reading for them is like 1400, is it the same with the sr, any more additional info would help, cause i wanna do the sr swap in the summer so i dont wanna jump into until i all the basics, thanks alot

[Silvia240sxNiSmO]

yea i wish i understood more of what you guys are talking about LoL