Autometer air/fuel gauges. Where are yours reading
 

I'm curious what your air/fuel gauges are at if you have them. Mine with my fmu turned all the way up I can only get to the first rich bar and it also lights up the very last stoich bar.

Occasionally it stays in the lean/red and the very first bar... very bad. I'm not sure if the gauge is simply wrong or if my fuel pump isnt working the way it should or what. Anyways just give me some insight if you can and I'd appreciate it.

Re:Autometer air/fuel gauges. Where are yours reading
 

I use mine for a safeguard, it's saved my motor a couple times when something goes askew like the vac hose popping off of the fmu. Thank you autometer!

Re:Autometer air/fuel gauges. Where are yours reading
 

Well thats good, but where is it showing when your at wot when your vac hose is on?

I realize its not that accurate but sometimes its saying lean and sometimes not, I havent blown any vac lines I dont know whats up with the deal

Re:Autometer air/fuel gauges. Where are yours reading
 

check your plugs?

Re:Autometer air/fuel gauges. Where are yours reading
 

I was going to check the plugs today but its raining outside so I will probably do it tomorrow or later this week.

Re:Autometer air/fuel gauges. Where are yours reading
 

This was on my old set up and it was consistent everytime unless it was really cold out. But it was always a green right above the word "rich". I just made sure it was always green under boost.

Re:Autometer air/fuel gauges. Where are yours reading
 

What size FMU disk are you using? Where did you tap the sensor wire for the gauge? How does it feel? Does it feel weak when the readings drop? How much boost are you running?

Don't even look at that gauge unless you are at WOT(not sure if you know that).
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Re:Autometer air/fuel gauges. Where are yours reading
 

Dr. Boost,

I'm aware that it only works at wot. I have a Bell Eng (cartech) adjustable FMU part #2025. The gain is adjusted almost as far as it goes. If I completly close the gain control when my car shifts it takes a ----...I'm thinking the injectors are clipping at that point.

I'm currently running about 4.5 psi

I tapped the sensor at the same spot I connected into the O2 sensor wiring when i extened it ( the wire was not long enought to reach its new location). The only thing I did differently was that I used a different gauge wire to extend the wire to the 02 sensor as well as to the air/fuel guage's wiring. I doubt that would make a difference but its possible.

The car feels nice, it pulls well and seems to run well. I need to pull the plugs, maybe I'll do that tomorrow.

Re:Autometer air/fuel gauges. Where are yours reading
 

Do you have a way to check fuel pressure? Maybe the pump can't keep up or maybe the FMU isn't doing it's job.

That's a pretty low psi for you to be having that sort of problem. What fuel pump are you using and what size are those injectors?
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Re:Autometer air/fuel gauges. Where are yours reading
 

I agree its odd... The fuel system is completly stock I beleive they are 240 or 260 cc injectors. The pump has 130,000 miles on it almost so that coudl be a problem as well. I'm not sure if the fmu is really doing its job but the air/fuel gauge seems to respond to me adjusting the gain.

I dont have a fuel pressure gauge setup, I wish I did but I simply cannot afford it at this time.

I have a set of 35lb/hr injectors from my old thunderbird turbocoupe at home that I will try sometime. They are about 350cc or so I cant remember I figured it out once. Anyways I'm not sure if my stock ecu will handle them but its worth a shot. I will replace the intank pump this winter hopefully and upgrade it.

Re:Autometer air/fuel gauges. Where are yours reading
 

Yeah, I doubt your ECU will know what to do with those 350cc injectors. I would say the pump is in desperate need of an upgrade. I hope you get this fixed before anything bad happens. :-\
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Re:Autometer air/fuel gauges. Where are yours reading
 

I know for sure we can go up to 320cc injectors its been done many times. It cannot hurt to try though since I have them and they are free.

I just dont get why the gauge sometimes reads completly red and I mean the very leanest bar on occasion. It will be that way the whole time at wot but the next time I run the car its in its normal position on the first rich bar. I'm just overly confused not knowing if my gauge is just messing up or if my fuel pump is bad or what.

I'll get it resolved...besides its comming time for the winter beater and the turbo sunfire will not be driven until spring again. Plenty of time to make modifications.

I would like to buy this though
http://www.innovatemotorsports.com/

and get an emanage which would allow me to run larger injectors or sub-injectors...as well as retard my timing on my stupid distributorless ignition system. That would be ideal I think....

Re:Autometer air/fuel gauges. Where are yours reading
 

Well, as you know that gauge is not accurate at all and is just used as a reference point. One other thing to consider is how old is the o2 sensor? That could be ------- with you also. Those damn things go crazy when you run rich for a while.

I bet with a new/aftermarket pump and maybe a new o2 it would be reading where it should be although as you said, a different management system would be ideal.

BTW, you need to update your avatar with the new paint job. That thing looked dope. :)
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Re:Autometer air/fuel gauges. Where are yours reading
 

Thats all i wanted was a reference point. I'm not sure on the age of the O2 sensor. I believe I have a new one at home that came off of the new engine but I never used it...I'll give that a shot to see if it changes anything.

New management will hopefully be soon. I was not going to get an emanage but when I saw how far down the wide band o2 has come and that one that i posted is rpm dependant as well. So tuning would become much easier I coudl add fuel at specific rpm's and what not so that will be my next route hopefully.

I'd love to see 13 psi on stock internals, if its tuned correctly and the timing is retarded enough I beleive I Could hit 15 without blowing it up completly. Anyways those are the goals and thank you for the help. Hopefully this is resolved soon.

Oh I did a quickie on the avatar....

Re:Autometer air/fuel gauges. Where are yours reading
 

Haha, cool. 8) That beast looks pissed off at the world. :o
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Re:Autometer air/fuel gauges. Where are yours reading
 

Dr. Boost,

You know I thought about some things some more. I have my fmu and several other items running off of the same vaccume source. I doubt its a problem but it ran through my head. Anyways I have the boost gauge, my actuator, and my fmu all running off of the FPR vaccume.

Another item I do have an egt gauge with the probe installed in the manifold. At cruising speeds I'm between 1300 and 1400 degress. At WOT I'm a lil about 1600. The gauge stops at 1600 but the needle is going a lil past it, I'm not sure where it actually pegs at.

I should have bought a fuel pressure gauge instead of some other crap lol...oh well.

Re:Autometer air/fuel gauges. Where are yours reading
 

it definatly could be a bad O2 sensor!! I just put my gauges in and the air/fuel was acting up going from rich all the way down to lean but car still ran fine. i knew i already had a bad O2 sensor so i waited til i got that fixed then if it still did it i know i hooked it up wrong, but i had everything right. the the next day i bought a new bosch O2 sensor and my car ran perfect. no more check engine light from O2 and my air/fuel started working perfectly, jumping when not at wot, and fixed when i pushed the gas. check your O2, it could be on its way the the shitter!