Jamie@dundonmotorsports

kfmcmahon

jamie, what are the gains WITH a tune? Is it reversible to stock tune?
thanks

Jamie@dundonmotorsports

3600 RPM: +50 wtq +32whp 5000 RPM: +55 wtq, +52whp 5800 RPM: +24 wtq, +26whp 6500 RPM: +30 wtq, +36whp 7500 RPM: +30 wtq, +43whp *Intake Air temps must be below 68F/20C to achieve these results. The ECU torque limits above 20C for emissions purposes

3600 RPM: +50 wtq +32whp
5000 RPM: +55 wtq, +52whp
5800 RPM: +24 wtq, +26whp
6500 RPM: +30 wtq, +36whp
7500 RPM: +30 wtq, +43whp

The Cobb AP is a reversible tune, you can revert the car back to the stock tune for service or uninstall the Cobb AP,

Link for the Cobb AP and Dundon Pro Tune

https://www.dundonmotorsports.com/po...-tune?carid=41

Switchfoot614

How about another group buy on these?

'ringmeister

+1 on that!

Jamie@dundonmotorsports

Happy to support this, But one of you will be the lead for it, collect the money and pay us in one go.

get more than 3 of you and we’ll do 10% off.

GeoJoe

WC31

Is install relatively easy?

Jamie@dundonmotorsports

Others have done it at home. Working on a mid engine car I wouldn’t call easy. But if you take your time it’s not bad

gtreddy

What is the torque limit with temps higher than that? Just curious since, being in Houston, its pretty much never below 20C haha.

Jamie@dundonmotorsports

It's not like the gains disappear, the point of the detail about IAT's was if the car is on the dyno and it makes 85% of the gains and the intake temps are 85-90F but the temps aren't shared it appears due to lack of all of the details of the dyno test that somehow the headers aren't "working". So we include the 68F IAT number so that it's clear if you're trying to validate the data...

That said, if you were to get them on the car and not like them you have 30 days to send them back. We haven't gotten any GT4 headers back...

gtreddy

Just to clarify, the 68F number is to normalize the dyno results. I was under the impression you meant the ECU itself limited the torque at a certain temp. "The ECU torque limits above 20C for emissions purposes"

Jamie@dundonmotorsports

The 68F is to be very clear about the conditions we work to test under and we’ve found it to be where the ecu will start to intervene and start skewing the test results. The ecu does torque limit when conditions might require more fuel, like elevated intake temps, high engine temps etc.

The torque limiting doesn’t negate the gains and it will happen with any mods on the car, not just ours, so why not get the parts that have the best upside to get the most power you can!

gtreddy

I understand. My question was more along the lines of the ecu itself and how much torque it pulls. I didn’t know that it did that for emissions purposes based on temps. Of course it won’t negate all the gains. But the answer seems to be 10-15% overall depending on the conditions. Since my operating environment is consistently well over that temp, I just wanted to know what my real world results would roughly be. I understand all aftermarket devices are affected by this. Just wanted the numbers so I can do my own value proposition.