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so what the heck is the deal? can antone fix this?

I've been running the AEM UEGO Wideband in my truck since the beginning and have always trusted it. I have had no reason not to. The truck runs great and I haven't blown it up due to false A/F...

Just got mine in the mail and after spending $350 realized I'll have to go out and buy some more crap to get it to work with my computer. This is rediculous. Where can I get what ever I need to hook...

Disabled the MAF and the car runs 100% better. o2's now reading normally. I guess the MAF is bad. Right?


Just a quick question: a numerically higher narrowband o2 mV reading is richer or...

Ok, care to enlighten me a little bit. Did you take a look at the scans? Could it just be that the O2's are bad? Injector problems, what?

With attachments.

What would cause the O2's to read anywhere from 17 to 30 when WOT. It also does it at idle too. "Scan 1" is just cruising around. "Scan 2" is a wide open run getting on the freeway. The car is stock...

I'm refering to WOT timing. All differences are negative. In other words it never adds timing, but is removing it by as much as 5*. As far as I know all TQM is removed, no EGR, and on the pass I'm...

If your AFR Correction, IAT Spark and ECT Spark Base tables are all zero'd, what would cause your commanded timing to differ from you actual timing?

BTW, I'm tuning in OLSD. See my combo below

How does the pcm know what timing to command if the MAF is not there. Can you log Cylinder Airmass, is it the same as Dynamic Cylinder Air in the Default Imperial.cfg.

Would this be accurate for all 2-bar sensors? Think you could do this for a 3-bar sensor?

:doh: Thanks.

Linear is 305.00 kpa
Offset is 10.33 kpa

My main concern is that at full boost my autometer gauge reads around 14 psi and the 3-bar MAP pid (psi) reads 26.72 psi and my MAP pid (kpa) only reads around 140-145 kpa. Also at this same frame in...

Thanks. I've been doing alot of reading and I think I'm getting a better handle on it. Let me see if I have this THEORY right:

The VE table is an airflow model for the engine. If my VE table is...

This helped explain alot. Sorry if I'm asking dump questions.

http://redhardsupra.blogspot.com/2006/11/terminology-and-confusion-part-2-olvscl.html

I guess what I am asking is, If the pcm is commanding an A/F ratio, how does it know how much fuel to add or subract if the STFT and LTFT learning are disabled. Maybe I don't understand. :banghead: ...

I'm running/tuning the truck in OLSD and I have a couple of questions. If the o2 sensors are not sending the pcm and info then there will not be any LTFT's or STFT's right? Tuning can only be done...

This may be a dumb question, but I'm learning. I have a 3-bar OLSD tune on my truck and I can't figure out how to log boost. In HPScanner, I have the regular MAP (kpa) PID in the table and the 3-Bar...

I have procharged silverado with a built cast-iron 5.7 (bored 5.3). The engine builder set up the piston and ring clearance on the loose side to give me some protection. On my tune it doesn't matter...