I had 3 pulls on a Dynojet this afternoon. Temp was 81 degrees F. !st pull my IAT was 129. 299 HP 304 tq.
We let the car sit for almost 45 minutes. IAT dropped to low 90's.
Then another pull after that. You can see the drop in power which I have over layed. I don't have any experience with the graphs, so if anyone has any mods I can do that would be helpful, let me know.
Here's the link to the video, don't know how to embed photobucket video.
http://i156.photobucket.com/albums/t16/ElecBlueG6GT/G8%20dyno/th_dyno3.jpg (http://s156.photobucket.com/albums/t16/ElecBlueG6GT/G8%20dyno/?action=view&current=dyno3.flv)


http://i156.photobucket.com/albums/t16/ElecBlueG6GT/G8%20dyno/G8334dynorun.jpg

Stock tune, 87 octane, hot motor.
New Era Performance Parts CAI

I'd put in a 160 stat quick!

What mods have you done? looks like a CAI?

Something isn't quite right about this graph. Aren't the HP and TQ lines suppose to always cross around 5200 RPM? These are crossing at about 4750

Aren't the HP and TQ lines suppose to always cross around 5200 RPM?

5252 precisely. (its all unit conversion).

Horsepower = ( Torque * RPM)/5252

If you look at the hp and torque, you will notice that they are on a different scale. If the scale would be identical, then they would cross exactly where you want it to cross.

I'll see if I can get the scales correct and change the graph.

I had 3 pulls on a Dynojet this afternoon. Temp was 81 degrees F. !st pull my IAT was 129. 299 HP 304 tq.
We let the car sit for almost 45 minutes. IAT dropped to low 90's.
Then another pull after that. You can see the drop in power which I have over layed. I don't have any experience with the graphs, so if anyone has any mods I can do that would be helpful, let me know.
Here's the link to the video, don't know how to embed photobucket video.
http://i156.photobucket.com/albums/t16/ElecBlueG6GT/G8%20dyno/th_dyno3.jpg (http://s156.photobucket.com/albums/t16/ElecBlueG6GT/G8%20dyno/?action=view&current=dyno3.flv)


http://i156.photobucket.com/albums/t16/ElecBlueG6GT/G8%20dyno/G8334dynoruns.jpg

Stock tune, 87 octane, hot motor.
New Era Performance Parts CAI
Pretty damn good on 87 and no tune.

thats some good numbers

Scaling fixed in dyno sheet.
I've read that some other G8's were running rich. Up to a full point. Does this mean 15.7 on the air fuel? Also what is PE? Something to do with enrichment?
I'm asking this because on my dyno runs, my air/fuel was almost a flat line. It ran between 14.7 and 14.9.

Scaling fixed in dyno sheet.
I've read that some other G8's were running rich. Up to a full point. Does this mean 15.7 on the air fuel? Also what is PE? Something to do with enrichment?
I'm asking this because on my dyno runs, my air/fuel was almost a flat line. It ran between 14.7 and 14.9.

You need to get a tune to fix that.

I plan on that. Does anyone have answers to the questions other than get a tune?

I plan on that. Does anyone have answers to the questions other than get a tune?

Unless I have it completely backwards you are not running rich you are running lean and dangerously lean at that. That is not a good A/F ratio to be at all.

I thought 14.7 is where it should be.

Your afr is going to vary depending on point of measurement, pre cat or post cat, post cat will always be leaner then pre cat readings. Tuning is normally done on pre cat fuel ratios.