Any feel like having a tuning discussion?

[wpage]

CHP,
This is alot to digest. Your baselines are reaching the high end of where I am willing to go on this topic. Are you still working on a basicly stock engine? Cat Back Exhaust? Intake Mods? Some of this may be skewed for some of us. Please digress if you would to keep us on track with your tests...
This is interesting data. However getting deeper.

[ChevyHighPerformance]

Originally Posted by wpage

CHP,
This is alot to digest. Your baselines are reaching the high end of where I am willing to go on this topic. Are you still working on a basicly stock engine? Cat Back Exhaust? Intake Mods? Some of this may be skewed for some of us. Please digress if you would to keep us on track with your tests...
This is interesting data. However getting deeper.

Stock engine with main mods: after market cold air intake, ported throttle body, and cat back exhaust.

[wpage]

CHP,
Thanks for clarity. Did you opt to keep your stock Tuning set up on the flash upgrade as a fall back? Or take the plunge and trade in for the performance tune?

[ChevyHighPerformance]

Originally Posted by wpage

CHP,
Thanks for clarity. Did you opt to keep your stock Tuning set up on the flash upgrade as a fall back? Or take the plunge and trade in for the performance tune?

How HPTuners works is that you first read in your stock program through the diagnostic port and save it on your laptop using the HPTuners interface. Then you edit the stock program using a PCM editor program (comes with HPTuners). Then reload your modifed program. You still have the stock program to reload at any time. It takes less than a minute to load a program to your PCM.

HPTuners also comes with a OBDII scanner that lets you monitor/log all of the PCM parameters (no BCM, ABS, etc.), view diagnostic trouble codes, clear codes, etc. that you can use with any GM OBDII vehicles. For the vehicles that you have licenses for you can control the PCM on the fly. For example, you can change the commanded A/F, timing, turn off/on things like the fuel pump, peform a CASE relearn, cylinder balance, etc.

[wpage]

That sounds good so all the documentation is covered for go backs. Wonderd if for warrentee sake you needed extras. You have it coverd. Thanks for your help!

[mountainbiker]

Originally Posted by ChevyHighPerformance

HPTuners also comes with a OBDII scanner that lets you monitor/log all of the PCM parameters (no BCM, ABS, etc.), view diagnostic trouble codes, clear codes, etc. that you can use with any GM OBDII vehicles. For the vehicles that you have licenses for you can control the PCM on the fly. For example, you can change the commanded A/F, timing, turn off/on things like the fuel pump, perform a CASE relearn, cylinder balance, etc.

Of course there is always the garage (with scan tool) route; howerver, is there a "manual" way to perform a CASE relearn on the H3 instead of using the HPTuner, Tech II, or similar (expensive) scan tool?

Here is a "manual" write-up I found:

If the Crankshaft Variation Relearn is not accessible through your scan tool some truck applications 1998 & later), perform the relearn in the following manner:

1. Turn off all of the accessories. With the Air temperature sensor and
Coolant temperature within 5 degrees (Centigrade) of each other, start the engine and let it idle in Park or Neutral for two minutes.

2. Accelerate the vehicle to 55 mph at part throttle. Cruise at 55 mph for 8-10 minutes until the engine reaches operating temperature.

3. Cruise at 55 mph for another 5-6 minutes.

4. Decelerate to 45 mph without using the brakes, and maintain 45 mph for 1 minute.

5. Perform 4 deceleration cycles, without using the brakes, of 25 seconds each where no specific speed is necessary. Returning to 45 mph for 15 seconds in between deceleration cycles.

6. Accelerate to 55 mph and cruise for 2 minutes.

7. Stop the vehicle and idle for 2 minutes with the brake applied and the transmission in Drive (automatic trans.) or Neutral (manual trans.) with the clutch depressed.