Guys - here is a more normal power delivery MR from the last car in case study # 104 which was a freak

This gentleman had the following mods :

Blitz Air Intake (stainless)
AMS lower fmic pipe
HKS 272 int / 264 exh
Walbro fuel pump
APexi AVC EBC (not my favorite)
TXs Exhuast


93 Octane - 22 psi peak falling to 19.5

Custom Dyno Flash road tune

This car was road tuned as the AVCR is a boost controller which usually takes up a lot of time to tweak and adjust and the dyno shop was super busy today

I also wanted a chance to show how the road tuning with the 10 channel data logger stacks up against a dyno tuned car on the same day same time

Here is the final dyno sheet after two hours of road tuning and boost controller adjustment we put it on the dyno for one test pull - here is the curve and power

It was a great dyno sheet the AVCR was acting about a bit in the lower mid range which made the curve a bit wavy but other than that it was a really smooth dyno graph and great power delivery

Note we help this one out to 7600 unlike most of the dyno sheets I post which only go to 7,000 - I did this as the data logs I do on the road go to 7600 also

 

Now we see how on the road the G meter is actually following the tq curve which is what really measures the power of the car

The tq curve and G meter are both pegged to the boost taper of the apexi - nearly all 3 identical

Here is a log from the road tune


This is the acutal data I use to tune the car by observing the interrelationship between boost levels, G force and knock, tuning decisions and adjustments are then made

If you are tuning well and the car has no mechanical issues you will see the blue boost line and the orange G force line each run accross in direct relationship to each other just as smoothly as they do on this sheet

This results in the almost flat line of the tq curve as it falls down towards red line

 

The G force can also be shown in this fashion - related to boost

 

This shows a 3D graph of boost, G and rpms and shows how smooth and even this car pulls on the road

BTW - no doubt there was an extra 10 or so whp left on the table with this tune but after over hearing how the customer likes to do some track days and drive the car very hard its wise to not have things at the very edge

 

My graphs are very similar to his graph's Al. Although a little lower...my max g force was .443 and I think that says .506. What would be the power difference in the two cars using the data combined with the dyno? I am assuming his larger intake cam may have something to do with the higher peak g-force number? Although his peak g force is higher the rest of the g-forces between his and my car are pretty much the same. What are your thoughts?

Edit: I weight 290 pounds soooo...I'm sure that helped to bring my g numbers down some.

 

Dont look at the spike - look at the average from say 4,000 - to 6,000 - that tells the power very accurately

 

Okay so when I look at it that way my numbers are about 7 thousandths of a g less.

 

did the car still have the stock exhaust?? I didnt see it listed with the other mods. Other than that, the power output is pretty good for the mods

Thanks for the explanation of the breakdown of the tune, very interesting..

 

Help me out here I don't follow the y-axis how do you read that

 

Which chart - the bottom one ?

 

My bad - I added the TX's 3" exhuast in the mod list

 

Al this is my car, a few mods listed were incorrect. First my car is a 05 RS!

Mods
TurboXs Catback
TurboXs test pipe
HKS downpipe
Buddy Club Cams 264i/272e
Findanza Cam gears -2/-2
Apexi AVC-R ebc
Blitz Stainless intake
DSG 3' MAF pipe
Greddy upper/AMS lower IC piping

I worked on fine tunning of the AVC-R on the long ride home. Making adjustments to the solenoid valve duty cycle settings. Also made adjustments to the Feedback Speed Settings which helps correct unstable boost and is gear specific. I feel this is a great boost controller however it requires a far amount of tuning.

Al thanks again for the great Custom Road Tune . This tune is much better then the Mail-In Flash and light years ahead of stock tuning

 

You should post a picture of that mount you have for the AVCR - its a really unique design. I think it owuld work on safc also