Member Makaveli_31 came back to us today wanting to get a custom tuned Dyno Flash - he had previously had the mail in Dyno Flash - gotten a custom tuned Dyno Flash - changed some parts and had tried out another flash - which actually turned out to be very good

Here is his first of several - numerous base runs we did after spinning the car on the dyno to center it on the rollers.

We did a few base line runs becuase I accidentally disconnected the battery and wanted to see if knock activity would start after several pulls. (To make a fair comparision at the end of the tunning we also subjected the Dyno Flash to a three pull back to back series of pulls - more later). A curious point on this base line - we did not see much knock - depsite the super lean a/f ratios which I found rather suprizing.

 

This run was done in 4th - just for fun !

 

Another base line - smooth - but IMHO - just way too lean for pump gas

I was actually surpized to see not much knock going on - not a bad tune at all considering the a/f targets

 

Lean

 

Last base run - things hanging in well - nothing bad going down, a/f ratios are moving about a bit and not as repeatable on the multiple runs as I would like to see but otherwise its a very nice tuning job.

 

First Dyno Flash tuned pull - - looking much richer - but we need to scratch our heads a bit to find the missing power in the upcomming pulls

Basically I see things are still too lean in the low rpms and high rpms - but ideal in the middle

Lets try again

 

Things starting to get dialed in better here - some a/f corrections needed as indictaed and wanting to try a tad more timing again

 

The power is comming !

 

Working well. Its nice to always find the stock ecu responding as we adjust - in the same way we adjust it. The stock ecu is a very powerful and stable ecu - I love it.

We are nearing the end here - some more adjustments to be made

 

One more small adjustment to go

 

Seeing that run 10 is near ideal and feeling and hearing the sound I wanted to hear, I ask the dyno operator to conduct the famous Dyno Flash "Dyno Torture Test" - 3 runs back to back one after the other without turing off the car

You can see several points

1 - The a/f stays repeatable and consistant

2 - The Powerband stays smooth as silk

3 - It makes more power on the 3rd pull - (nice )

Basically this is a done deal - it sounds perfect and not a hint of knock - stable and smooth

 

Torture tested ! (Those who have gone road tuning with me know hos we do this on the highway to test the tune's knock resistance).

 

Before and after with a/f. Now making more whp with a richer and more conservative a/f.

 

Basically two different ways of raching the same point

 

Mission accomplished