need guages

[Oni Snake]

Since I'll be turning the boost up in a couple weeks I think I need to get some gauges, a/f and egt's I think are the most important. But I don't have a lot of money to spend on either.

So what's a good, relativly cheap, brand to buy for the car? I'm going to need to buy the sensor kits too.

[toddipoo]

Cheap Air Fuel Gauge
http://www.jcwhitney.com/autoparts/P...p?Ntt=Air/Fuel


EGT's are all about the same.
I recommend Autometer for every gauge you can think of.
Your aware that if you have an EGT you dont really need an Air/Fuel gauge?
An egt is alot quicker at telling you if your rich or lean.
The EGT's usually come with the probe but be ready to spend at least 120bucks for one.
The Air/Fuel gauge will run off a stock O2 sensor so no additional sensors are required.


I recommend getting an EGT, Oil Pressure, Water Temp, Trans temp "If you have an automatic"

These 3 gauges in combination will tell you eveything is okay with your motor and will tell you when somethings not.

-toddi

[Oni Snake]

how does the EGT do a better job than the a/f? Wouldn't having both be better? Or is that just redundant?

[tvanlant]

I have both A/F and later intalled an EGT. I don't even pay attention to the A/F anymore. The only thing the A/F gauge can show you is what the O2 sensors are saying. Under WOT, I can set the egts to 1250, then turn down the fuel to make the egts 1500. At both egts, the A/F gauge reads exactly the same. You can't fine tune off an A/F gauge. Its only real purpose is to make sure you are not going drastically lean.

[Oni Snake]

how can I, someone who wouldn't know the difference between how 1250 and 1500 effect the car use it to it's effectiveness..that made sense..right? (sorry if it didn't I have a cold and my head is a bit cloudy)

These gauges are for an SRT-4, I'll be running some new mods in a few weeks and will be increasing fuel pressure and boost, I want to make sure I don't run lean.

Again, sorry if this is as confusing to you as it is to me. I'm sure I'd have understood a week ago when I was "normal"

[tvanlant]

I think I understand. If your egt gauge tells you that you are at 1250 degrees at full boost, then that means you are somewhat rich. If it says you are at say 1550, then you are on the lean side. With this info, you can adjust your fuel accordingly to get the temp you want (I shoot for 1450, some go higher). However, with only an A/F gauge, you won't be able to differentiate between 1250 and 1550. They will both show green on the gauge.

[Oni Snake]

ah, ok. I understand now.

I've got a lead on a good autometer EGT with the summit racing, fast acting comp probe for $160. I m ay be purchasing a fuel pressure gauge as well, for a combined total of $280, he's throwing in an oil temp gauge for free with them. Sounds like a good deal to me, since the EGT and probe retail for over $200. And I'll get an a/f gauge to throw in with the EGT and FPG in a pillar pod.

Even though I hate to be so obvious(what am I saying...I drive an orange SRT-4)

[tvanlant]

thats kinda expensive. You can get the EGT gauge and pyrometer for $119 from summit. Just go to www.summitracing.com then type in the part number ATM-4344

[Oni Snake]

He said the probe was the better of the two available. I'll quote exactly what he said about the gauge and probe "The EGT probe by itself was $100 from summit racing. It is the fast acting comp probe, not the slower acting street probe."

I guess I'm paying for the probe and the autometer gauge, instead of just the summit setup?

He's saying this when I sent him the link "The gauge inselling off has the better probe
this one:
link
This probe is the much faster acting"Open-end style" way more sensitive to temp change.

the one below has the standard closed-end "street" probe

Basically its the same gauge with a much more sensitive probe."

but his link links to the the same model

[Oni Snake]

Some more info about the gauge. it is different "New autometer ULTRA-LITE 0-1600deg, model 4365, Exhaust Gas Temp-pyrometer gauge, w/ hp fast reacting EGT probe" and the instructions http://www.autometer.com/download_instruction/651h.pdf

and this

"The gauge im selling has a separate power box for the probe and the gauge, you had to buy the probe separately"

This is probably getting annoying, lol. But this sinus infection is making my head a bit cloudy, and making it harder to understand this stuff.

[Oni Snake]

Wow, is my head much clearer today than it was yesterday. Feels like the infection is going away

According to the seller the probe is an open-end probe and is more sensitive than a closed-end probe. Says it reads faster than the regular probe does. Is it worth purchasing this over the $120 summit racing one piece probe/power/gauge?

[tvanlant]

I guess I can't judge that probe until I've tried it. My regular autometer from summit seems to read plenty fast. I know I could find a much better place for $120 (a set of injectors) than in a egt probe.

[toddipoo]

Ive also heard about open ended probes reading better..
Which is why I bought one off of ebay for 40 bucks and am saving the one that came with my phantom meter for my other car.

-toddi

[hirax]

Hi!
I did a/f gauge by myself.
DIY instructions from this site:http://www.roundededge.com/cip/xGauge.html
Mine looks this way: http://www.hirax.pri.ee/bigpic/gauge-002.jpg
Cost: ~15$ + ~2-3 hours my own worktime.
And it works great!

[Oni Snake]

Quote:

Originally Posted by hirax Hi! I did a/f gauge by myself. DIY instructions from this site:http://www.roundededge.com/cip/xGauge.html Mine looks this way: http://www.hirax.pri.ee/bigpic/gauge-002.jpg Cost: ~15$ + ~2-3 hours my own worktime. And it works great!

I'm driving a brand new car, I'll go with something purdy

Thanks though, that was interesting