Whilst I wait for development of a custom A-pillar for the G35, I went ahead and had three gauges installed on my existing pillar:











The gauges are from top to bottom:

(1) Autometer pyrometer (EGT) measured above the cat
(2) Autometer electronic boost measured via the plenum grommet
(3) AEM wideband O2 (A/F) measured near the stock sensor

--Steve

 

does the aem uego work well? does it occilate like the gay autometer ones all the time?

 

I say screw the gauge pod, that looks very nice.

 

Looks GREAT!!!

 

Yeah Zimbo.....I am curious about this as well. Is there a delay as the readings change on the AEM A/F gauge or does the LED readout change rapidly to match the blinking lights around the perimeter?

 

Yesterday was my first chance to use the gauges so I'm still getting acclimated. The LED readout is not jittery. I don't recall if the lights around the perimeter are less "smoothed" than the LED readout. I'll check this next time I'm out and about (weather is nasty here now so WOT isn't practical).

The A/F reading does appear to be slightly delayed--perhaps half a second behind. That may be due to smoothing. I need to get the manuals out and read them.

--Steve

 

Steve, I got a question for you about the AEM. I installed mine and when I'm at WOT, the LED is pinned to 11 the whole time, and the numbers now read - - -. I spoke with AEM, they've been transfering me to a few techs, they say its because it's really rich,below 11, yet on the dyno my A/F from say 2500-4800 are right under 12. I know a wideband is supposed to be more accurate, reading from the manifold collector etc.. but no way is there that much of a difference. I'm wondering what yours reads when your at WOT? Have you had a chance to try it out?

Also, they did a really good job on the install, very clean!

Bill

 

When I go WOT mine starts at 14.7 and drops progressively to the 11s as boost increases. That's where I'm tuned to be, so no surprises there. I think the only time I see it hold at - - - is if I'm off throttle--but I need to play with it more.

What I ought to do is have someone sit in the back seat and watch. I played around a bit late last night but it's still hard to watch the gauge and drive at WOT. I'll get better at it, tho.

I also put in the Kinetix HF cats at the same time so I should go do a dyno run (or record the output of the AEM gauge on a laptop) to make sure I'm still rich enough.

--Steve

 

Did you hook up the serial output wire to the rs-232 plug? I'm going to do that sometime today when I get a chance to run to radio shack. See, I tuned to be in upper 11's at those RPM's I specified, but it's still coming back like it's richer then 11, so I was concerned the gauge or sensor is acting up.

 

not bad.

 

I haven't done that--and in fact I don't know for sure where they ran the serial output wire. Lemme know how that goes.

--Steve

 

Looks good in the G. One question.... Was it not possible to run the wires behind the A-Pilar cover, or were there too many wires to fit them in there. Looks good either way....

 

Due to the bulk of the wires, the size of the hole I would have had to cut in the A-pillar would have been pretty big. And, yeah, there's a lot of wiring in those three gauges.

--Steve

 

very nice

 

Well the 'gay' autometer one is just the readout from a narrowband o2 that is stock on the car. A narrowband can only say too rich or too lean, that's why it occilates. My buddy has a wideband unit and has analog outputs. He removed the stock o2 sensor and used the wideband units analog output to emulate the stock o2 so the ECU actually gets a better reading and it also displays on the autometer af gauge he already had installed. So that gauge is now very accurate. It all depends on the sensor you use.

 

Sorry to interrupt but what does the EGT gauge tell about the car versus the A/F gauge?

 

EGT measures the heat of the engine gas.

 

The EGT gauge was always used to determine the leanness of the motor by doing an extra calculation in your head (inference) before the new AEM AF gauge came out recently. IMO, there is no point in getting an EGT if you can afford the twice as expensive AF gauge.

 

Fly By Z you may be right. However, I am planning to use the A/F gauge for ongoing tuning purposes since it has serial output and can record exact A/F at intervals over time. The EGT is nice because it doesn't immediately change after letting off throttle.

--Steve

 

That looks sweet.......like someone said earlier, screw the pod.....you did a great job