Hey, I am at a loss for what to do. I have heard different things and want to know what everyone thinks when it comes to what is necessary. I have been told I should run Boost, A/F ratio wideband, and Fuel Pressure. I have also been told I should run Boost, EGT, and Fuel Pressure. I have an E0-1 and was told I could run the A/F ratio there, but there would be a delay... What is the most importnant, not only for running the car but tuning? Please help with this. THANKS!

 

In order of importance IMO

1. Wideband A/F (to avoid lean conditions) Also most important to road tune
2. Boost (to monitor spikes)
3. Fuel Pressure
4. EGT (less necessary if you have WBO2)

 

Unfortunately, I would have to disagree and run the following,

1.Wideband- I should of probably got one
2. Boost- Monitor spikes and what not
3. EGT-If you don't have the wideband you can monitor lean conditions as the temp rises, exhaust is grainier and louder.
4. Fuel pressure- not sure why you need it, if you lose pressure then a lean condition should occur so your Wideband or EGT would be affected. I guess it helps in tuning and finding problems.

 

Good call, we run this setup when a customer demands Defi gauges..ie wide band not available.

 

I agree with this setup. If you run a wideband, that should be adequate enough that you wouldn't have to run an EGT. I would replace the EGT with a oil temp.

I run:
Wideband - Zeitronix unit in the cubby. AFR is very important when boosting a car. Shows lean condition(s) and rich condition(s)

on the pillar:
Boost - to monitor boost levels (obviously), mainly used when tuning or using dual stage boost controllers. Once boost is set, it is kind of just eye candy on the pillar. Though, when weather conditions change, it is good to know if you boost is spiking or creeping.

Fuel pressure - to monitor fuel pressure, most important under WOT and full load. this helped me resolve an issue I had; I had high fuel pressure at idle, but under WOT it was fine. Running revision to the APS install that I did not catch/get at the time I installed my setup:

APS fuel pump assembly
The cut away with the "stage drill up to 1/8" is what I am refering to

The fuel pressure is helpful in conjuction with the wideband. If you find you are leaning out under WOT, knowing what the fuel pressure is at under those conditions can prove very usefull.

Oil Temp - this is the gauge I watch most of all three. I am constantly monitoring my oil temp. When I first get rolling, I stay out of boost until my oil is up to temp. It takes longer for the oil to heat up than coolant. Also, on hot days, it is crucial IMO to monitor oil temps, especially during 'spirited' driving.

If you go high boost and high HP, then I would invest in an EGT, but at about 10-12 PSI, I don't see the need if you run a half @ss wideband.

 

My preference:

1) Boost
2) Wideband AF
3) Fuel pressure if you have a return fuel system
4) EGT...or #3 if you dont have a return system

 

Sharif: So for stock APS TT you prefer gauges1-3?
Delete - EGT?

 

Tough call. The APS FPR isnt adjustable, so it might not help much to know FP at all times. I would probably do 1,2,4 Skipping the Fuel Pressure gauge.

 

My shop recommended an oil pressure gauge after the engine build.

 

With the G35, you are right...as you dont have a stock oil pressure gauge. So many gauges...so little space.

 

I am following Sharif's advice.. This way I can monitor all three important aspects of a F/I car. The fuel return system will help you out big time... if you have the funds go for it! What brand of gauges are you going with.. I am getting the Innovative Wide band, Defi boost, and Defi fuel pressure on a side trime gauge pod. Are you do somthing familiar?

 

I must be a gauge ***** then I run boost, EGT, Fuel Pressure, Water Temp (at the block oulet) and oil temp. And now I'm looking around for a wideband. Of course that includes the stock oil pressure and voltmeter. I don't know what it is but knowing everything your motor is doing is a bonus to me.

 

Sooooo true

 

Is the wideband REALLY needed? I know I sound cheap but I was talking to the guy that is going to dyno and tune my car and he claimed all I needed was a boost fuel pressure gauge. Is he right. He said why bother with af since thats what he tunes. Im a newbie as you guys can tell. Input would help a lot.

 

A/F in the car is basiclly for safety ...just like all the other gauges why would you need a boost gauge if you know your at 10psi .... why would you need a a/f if the tune is right .... so on and so on.....

i just got my gauges in for my vortech, i choose :
defi boost
defi oil p
aem wideband

some people get fuel p for the vortech.... but the fmu is not adjustable so theres really no point ...

Marty at injectedperfomance.com gives really good prices .... theyre highly recommended !!!!!

 

IMHO, yes..its needed. With the state of tuning options on the 350Z, AF ratios can move around a little bit, after the car is tuned. It's not uncommon to see AF ratio shifts once you drive the car on the street for a while. So it's great piece of mind to see AF in real time; that way, you can make adjustments if things change around on you.

 

Lol, how do u keep an eye on the road and all the other gauges?


Back on topic, I'm running just the Boost and wideband. Probably going to get a oil temp later, and I will get the Fuel Pressure gauge when I get the return system.

 

Thats why I chose the Defi with Link. You can record up to 3min (or 90 seconds can't remember), of guage action and play back anytime when your idle or driving. As long as the car is on you can do this. Its real handy and people trip off it pretty good.

 

That seems like a really nice toy. Seems like it would be great to have when tuning on the street. Do you have a link by any chance?