Quote:
Originally Posted by M3PO
I am a somewhat unhappy tune customer...of Evovle's.
I don't feel that my tune did anything. The dyno showed negligible gains. It was on 231E and ran till it wouldn't make anymore power. Still strapped on the dyno, flashed to tuned 231E. Ran till it wouldn't make more power. It gained 6 HP or less over the curve.
As far as response and all that BS, I didn't feel much. Definitely not enough to justify $1K. So basically, they turned my CEL off for $1000.
And now, I have been waiting for my 240E file since January.
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Doesn't sound like a good experience in terms of the 240E wait.
Keep in mind that even though you saw negligible gains on the dyno, on the street where it really matters you very well may have gains.
At speed, the IAT temperature is usually between 10-15 degrees of ambient temperature. So if it's 75 outside, at 80 MPH you'll have an IAT of 87 degrees.
Now stop the car and let it idle for 5 minutes, or run it on the dyno a couple of times (even with dyno fans). You'll see that the intake temperature is over 110F, even up to 140F depending on the number of runs, air flow, etc..
Then you flash the tune in and run it again, and are disappointed that it didn't make 20 whp more.. You'd be surprised with the amount of ignition advance retard and power loss from a 40 degree difference in IATs. I see stock cars on the dyno unable to hit the stock targets, but on the road they do. In the end, if you have a serious wind tunnel and a controlled and measured environment, the dyno is a very useful tool. But given that 99% of dyno testing is not in this kind of environment, it's not really an accurate representation of what happens on the street/track/ etc.