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Oops.. I read your post and was going to add that my friends '05 C6 had the same problem because of the MAF, but I see that you have an SD tune. What are you doing about your fuel delivery? Bigger...

Close? The way I understand it, it needs to be exact. Any changes in the piping from one MAF to the other will change the dynamic airflow in each pipe, which will throw off the measurements if you...

Done. Thanks, Bill. :cool:

Edit to add: Tech support at this time of night??? How awesome is that? :worship:

I'm downloading the beta version now. Thanks, Bill! :D

I just got a PM from a helpful forum member... he was able to open the tune using the beta version of HP Tuners.

We also sent a message to the tuner, and he said that he tuned it using the beta...

I just had the same problem. :confused:

The original tune was pulled from the car by a friend and sent off to be adjusted for a new cam install. The tune was modified by the tuner, then e-mailed...

Good points. :cheers:



Shoot... not me. :D

I posted up my 'learning experience' with my C5 a while back, hoping to get some feed back of ANY kind. I had my tuning book and the notes...

For my C5, I got the pins from Mouser. :cool:

Part numbers are as follows:

829-12084912
829-12084913

As cheap as they are, I just ordered 25 each and have them on-hand. You'll want to...

Not that I am aware of... :confused:

I bought the actual book... but I can see where that might be a problem to have one shipped to you. :(

Sure... there are a lot out there.

Take a look here for a great guide... it helped get me started for sure.

You might also want to buy this book. I bought it and found it to be very helpful.
...

If you look in the manual for the AFR gauge, you'll see that 14.7 AFR is approximately 2.35 VDC.

11 AFR = 0.5 VDC output
15 AFR = 2.5 VDC output

Therefore, a change of 0.2 AFR is a change of...

P0106: Manifold Absolute Pressure (MAP) sensor signal not within predicted range for 2 seconds.
Inspect for:
- restrictions in the MAP sensor vacuum source
- MAP sensor seal missing or damaged
-...

Everyone is a little different... so take this with a grain of salt.

The books and guides I have read show the PE table set to a given AFR for what you are trying to accomplish. When I did my...

If the car goes to crap like that, I would immediately suspect the battery/charging system. It sounds like the voltage is dropping and not able to supply the coils/fuel pump/dash with the power it...

Need to know a lot more info than just the codes... like what kind of vehicle? The LS1 came in a Camaro, Trans Am, Corvette, etc... You might want to post your tune/config/scan while you're at it....

I can't say that I have seen them go bad over time such that their output changes significantly but still operates. Normally, they either work or they don't... but I would guess that after some time...

Log the O2's in your scanner. When it goes into closed loop, you should see them fluctuate from 0 mV to 999 mV as the AFR changes. 0 mV = lean. 999 mV = rich. (My car hits O2 B1 = 890 and O2 B2 =...

So after last weekend I decided to get off my lazy butt and install the new Z06 rear end I bought a while back. That would change my gear ratio from 2.73 to 3.42, which should help me get out of the...

From there, I let the PCM take over with the long term and short term fuel tables. I was curious as to how the O2 sensors were going to respond, being at the end of the long tube header like that. ...

I then took the 'new' tune with the updated VE tables and set it up for MAF tuning. I logged the data and was surprised at how far off my MAF was. When I first bought the car, I made the mistake of...

Just looking to get a little constructive criticism regarding how my tuning has been going so far. I have been reading the guide that has been posted here, as well as the book I bought on tuning. ...

Saw your post(s) over on the Corvette Forum... if you have HP Tuners, spend the $150 that they want to charge you for a 'e-mail tune' and buy a wideband instead. (Okay... a wideband is closer to...

It's known as the "Slope-Intercept" form: y = mx + b.

It is used to determine the formula that describes a line on an x-y plane, where:

y = Vertical position
x = Horizontal position
m =...

Glad to see you asking about how to make your car cleaner vs. trying to 'beat' the emissions. Talk about 'beating' emissions testing is taboo... and probably illegal.

That being said, educating...

69LT1Bird has put together some good tuning info here.

Here is a link to the configs and histograms from that web page that you might find helpful.

1st question I have is: Do you have a...

Your AFR during acceleration will be dependent upon a bunch of factors, depending on where you set everything up.

In a 'normal' cruise mode, your PCM will command stoich (14.7 for your car,...