1994-2002 [Subscribe to Daily Digest] |
the three typical gages that would be ran would probably be: Wideband A/F, boost, and EGT's.
If you're running an aftermarket ECU or have bolted some hardware mods to your car it's a good safe idea to run some gages so you can see if you're having a problem before things start melting and getting expensive.
I've read statements on this board where people question the value of running aftermarket gages but I feel strongly that the value they provide can't be underated in comparison to the cost of repairing a damaged engine due to lack of information. Just last week, (I've been driving-around with a wide-band A/F meter flopping around in the corner of my dash) I started seeing a lumpy idle and a dangerous lean condition at cruising speeds during all part throttle applications (but no check engine light!)--thought I got a bad tank of gas, I would have never known otherwise without the gage. Here's what I think happened: I had a spark plug go partially bad on cylinder 3 (by the smell of it), which caused the stock O2 sensor to register a rich condition due to the incomplete/unburned fuel from that cylinder going into the exhaust, which caused the closed-loop adaption to lessen the fuel to the other 3 cylinders during closed-loop partial throttle application to compensate. After I'd step on the gas harder, it would go to open loop control and the A/F would imrove slightly. So anyway, with all the talk about bad MAFs, sludging, 2.3 piston melting, etc. a little prevention could go a long way.
So specifically, what I saw and measured with my wideband O2 meter was that, with 1 bad spark plug, T7 would allow prolonged, lumpy, lean running conditions (>14.7:1) during moderate up-hill loads in cruising conditions without even tripping the check engine light!
So there, that was my sales pitch. Anyone interested in an A-pillar group buy? :)
posted by 67.10.24...
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