Not sure if this is the right place for this thread but all I want to say is wow. I used Freescan and TTS Datamaster and it's simply amazing what you can do with them.
I'm not exactly sure how to inturpret everything being shown on the logs but it was still intresting. Can someone here look at my logs and tell me what you think?
Also it threw 2 codes:
Code64- Right o2 sensor lean
code33- map sensor high

Also I some knock retard at idle and throghout the rpm band. If I was having ignition problems and if a cam tooth is off will it reflect in the logs? Also on the logs I noticed it always read "closed loop" WOT or ideal it always said closed loop. I wonder what that means?

 

You may have an exhaust leak causing the sensor to read lean, or it might be a bad sensor. MAP reading is used extensively by the pcm to adjust timing and other stuff so it's vital that it's reading accurately, what are the values at idle and wot?
Is your car with USA or Gulf specification? if it's gulf then it's programmed to not work in closed loop ever, if usa then it will be in closed loop after warm up.
Closed loop means that the pcm is using the o2 sensor as feedback for fuel corrections at part throttle to maintain a stoichometric ratio of air to fuel at 14.7:1. At wot the pcm reverts to PE tables (power enrichment), the o2 sensor reading is no longer used to regulate injectors pulse width, and the fuel is increased based on rpm and coolant temperature.
Have you showed up last night at the test and tune session? an enterseting contender showed up....

 

I wish I could post the log. It's USA specs. It went into closed loop right after warmup. I didnt go to test and tune because I was tired and upset. Been a long hard week at work and with the car so I just relaxed the whole time. I heard there was a 7 second car from Dubai that surprised everyone. I heard he took off slow then shot down the track for a 7 second run. I hear it was an odd looking car.

 

This might help you interpret the data:

http://members.aol.com/InjuneerZZ/ScanMast.htm

It is normal for the PCM to indicate "closed loop" at WOT. That simply means that closed loop is enabled, not that it is actually using the feedback from the O2 sensors. As noted in the post above, GM doesn't use the term "open loop" for the PCM control at WOT, the call it "power enrichement mode". GM only uses "open loop" for the cold start mode.

The MAP sensor high (high voltage = low vacuum) code is often set at idle, because your non-stock cam can't pull enough vacuum. If MAP is above 68kPa at idle, you get the code. That may be the case with your cam, depending on the LSA. I run a 230/242 114LSA 0.590/0.590 soild roller, and have no trouble with vacuum, pulling 50kPa. A narrower LSA will have more overlap and less vacuum.

 

If my cam is causing the issue with the maf then what can I do to make it happy? Can some special tuning be done to trick it or make it understand I have a big cam so get over it?

 

MAP........not MAF.

What is you MAP reading at idle? What it your idle RPM?

 

It jumps from 0.78 to 0.8 to 0.82 at idle. WOT I saw 1.0 and 0.93-0.98.

 

Then you do have a vacuum problem. At idle, with that cam (you never indicated the LSA, so I'm guessing a little here, just as you didn't answer the question about idle RPM), you shouldn't be getting a code. Appears you have 78-80kPa at idle. The threshold for the code is 68kPa. In effect, you only have about 7"Hg of vacuum. Something is wrong. Unless the cam has a 108LSA or something, it should be pulling at least twice that vacuum. Needs more work on the tune or the valves.

Let's try this one more time.....

-what is the LSA on the cam?
-what is the idle RPM?

 

I had a chance to review his datamaster file and one thing I did note was that the map was in the mid-high 80's but appeared pretty stable.

Also, IAC counts where maxed at 160 counts. The idle RPM was set around 875 but the car seemed to look like it was doing 800 pretty easy with no problems.

This makes me thing of 2 possible problems/solutions

1. Either TB blades are closed up too much. IAC is maxed and the idle that its holding is just not enough for the camshaft (likely case)

2. Map sensor failure + whats above.

The IAC should read about 25-32 counts warm (what i found works best). Prehaps you should open those blades up a bit or take the throttle body and clean it good with some carb cleaner.

 

So I should test the map sensor to ensure it's working correctly then clean the T/B and open it a little?

 

I would open it a bit first.

Did you see the idle counts maxed out? They are at 160 at a idle. They shoulld be at least half that and perferablly 25-35 counts. It means the the IAC is open all the way trying to hit the desired idle and in fact it still can't get to it.

 

Seems like an easy fix. Hopefully I can get ahold of some new o2 sensors to fix the other code also. Anything else I should take care of that you can see from the logs? This is the best time for me to do it all since it's down for a week for slipping tranny repairs and cosmetic work.