I wanted to present some factual data and information about my tuning and how I tune the Evo 8 reflash. I am not interested in attacking any other tuners or making insults or other personal remarks. My purpose here is to outline a real case senario of how I tune and how the tuning effects the power.

Rather than make claims and inuendo - I prefer to let the numbers speak for themselves and hopefully inteligent readers here can gain some insights into what I do and how I do it. I have a unique style of tuning and I am firmly commited to my ideas and principles. By sharing with you this information, I can better educate potential customers of Dyno Flash what they can expect and what not to expect from my product.

Member xxblackmambaxx came in today for a tune on his Evo 8

His mods are

Buschur Style cone intake
264 intake 272 exhaust cams
3" exhuast with test pipe
Hallman MBC
Walbro fuel pump
A reflash

Here is his original dyno numbers when he rolled into the dyno today

We took two test samples with the customer sitting in the car to verify the boost and proper operation. We used the STD correction due to heavy rain and high humidity.

I found the a/f was on the lean side, although the car was pulling smoothly and without any knock activity at about 21 - 22 psi of boost

 

Larger

 

I installed my basic safe calibration file reflash into the car and pulled a base line on my reflash to start the tuning process

Note the tune was significantly richer and lost a few whp

 

Larger - Dyno Flash base file

 

Seeing that the power was fairly weak and anemic for a car with this level of mods and a total absense of any knock action - I advanced the timing and leaned out the car for the next run

 

Seems I had gone a tad too lean on this attempt - but the advanced timing really helped out the power band - still no knock - but way TOO lean for my tastes

 

Now - this is where we start to see the magic of the Dyno Flash ideas start to take effect. Working the ign timing and making the car RICHER - we quiet down the engine noise and the car picks up more power running richer

With a peak a/f of 11.8 and most of the a/f in the 11.5 range this is where we find the maximum available power with the reflash on this customer's car

However, now I need to safely de-tune the settings slightly to provide a fat margin of saftey for various driving conditions and variance on fuel supply. The car is still knock free - however - I feel we can make it significantly safer without loosing much whp.

First step - lets richen it up and pull some timing

 

Larger

 

Now we can se that by making the a/f significantly richer - way richer - TOO rich - we only lost 3 whp

What many tuners do not realize is that the Evo 8 does NOT need to be run very lean to make a lot of whp

In fact my 667 whp race evo is only run at 11.5 - 11.7 a/f

On this pull - I went too far on the rich side and now we need to lean it out a bit more

 

larger

 

BUMP for the BEST tuner ever for flashes!!!

 

Leaned it out - a nice looking curve developing - a small spot which is too lean right at 6200

One more adjustment on timing and fuel to make

 

Hi Al,

I like the explaination about the A/F ratios, and I've gotten a better idea about what you're doing, thanks.

Would it be possible to see the timing numbers as well?

Hope I'm not asking for a lot.

Thanks,

jcnel.

 

Sorry had it sideways

 

Almost done