OK guys last week I had the opportunity to meet up with Mr. PedM5 himself to get a special header tune for the new Supersprint headers I recently installed. The guys at Powerchip are outstanding guys. Matt, in particular, is an awesome tuner with a beast of a beast. That thing pulls like a bull out of the gates. It's quite insane. I know what you gents speak about now when you guys sat shotgun in his beast.
Here are some of my notes BEFORE the Powerchip tune:
(ESS stock tune + stock header vs. ESS stock tune + header):
-gained ~27ft-lbs torque in the upper band (5K-redline) but loses ~18ft-lbs between 3K-4K RPM
-lost ~10whp between 3-4.5k RPM before it pulls like a train to max out @ 25whp max gain
-Good gains in the upper RPM band over stock headers for both HP and torque
One of the things I noticed when I got the headers how it pulled extremely hard above 4.5k RPM at the expense of a loss of power from 3.0k-4.5K RPM. Understandably, it's the tradeoff when installing 4-1 headers as opposed to 4-2-1. Those who drove my car noticed the "lag" in the lower end. It took a while for it to get to 4.5K but once there it just pulls, hard.
My goal with the post-header tune was to gain some more low and midrange back and ensure that I was running proper AFR after the headers.
Here's the before and after chart:
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The midrange gain of ~20whp and ~20ft-lbs means everything to me, especially after already gaining 25whp max after the headers alone. The dyno graph equates to exactly what what I felt as I drove away that evening. I retained my high-end gain, while adding power in the midrange. My car pulls, and pulls, from the moment you step on the gas, as indicated and validated with the dyno graph. There is no longer this "lag" before the "boost" type of feel. It no longer feels like the car is working it's way up to a certain point before it really takes off. Also, the car was running pretty rich according to the baseline. The software tune ensured proper AFR throughout the band at both partial-throttle and WOT positions.
[email protected] over-delivered on what I was expecting from his tune, both power, driveability, and customer service wise. I was not expecting anything close to those types of gains in the powerband, most notably, midrange. I am a VERY happy customer, and I love driving the beast even more. So Matt, again, thank you! You over-delivered and out-performed all my expectations going in. All I ask is to have the same power your beast has!
Let me know if you guys have any specific questions and such. I'll try my best to address them.
Here are some of my notes BEFORE the Powerchip tune:
(ESS stock tune + stock header vs. ESS stock tune + header):
-gained ~27ft-lbs torque in the upper band (5K-redline) but loses ~18ft-lbs between 3K-4K RPM
-lost ~10whp between 3-4.5k RPM before it pulls like a train to max out @ 25whp max gain
-Good gains in the upper RPM band over stock headers for both HP and torque
One of the things I noticed when I got the headers how it pulled extremely hard above 4.5k RPM at the expense of a loss of power from 3.0k-4.5K RPM. Understandably, it's the tradeoff when installing 4-1 headers as opposed to 4-2-1. Those who drove my car noticed the "lag" in the lower end. It took a while for it to get to 4.5K but once there it just pulls, hard.
My goal with the post-header tune was to gain some more low and midrange back and ensure that I was running proper AFR after the headers.
Here's the before and after chart:
The midrange gain of ~20whp and ~20ft-lbs means everything to me, especially after already gaining 25whp max after the headers alone. The dyno graph equates to exactly what what I felt as I drove away that evening. I retained my high-end gain, while adding power in the midrange. My car pulls, and pulls, from the moment you step on the gas, as indicated and validated with the dyno graph. There is no longer this "lag" before the "boost" type of feel. It no longer feels like the car is working it's way up to a certain point before it really takes off. Also, the car was running pretty rich according to the baseline. The software tune ensured proper AFR throughout the band at both partial-throttle and WOT positions.
[email protected] over-delivered on what I was expecting from his tune, both power, driveability, and customer service wise. I was not expecting anything close to those types of gains in the powerband, most notably, midrange. I am a VERY happy customer, and I love driving the beast even more. So Matt, again, thank you! You over-delivered and out-performed all my expectations going in. All I ask is to have the same power your beast has!
Let me know if you guys have any specific questions and such. I'll try my best to address them.
