Quote:
Originally Posted by Michael9218
There is an odd dip in hp at 7,200 rpm. Tuner thinks this could be some kind of harmonics with the exhaust as he wasn’t able to get rid of this. It’s not noticeable when driving the car. I do like the flat torque curve. I assume this is due to the stepped header design. Absolute values aren’t entirely relevant since different dynos and different days will produce different results. Motor is stock, with Supersprint stepped headers and catless exhaust and underdrive pulleys.
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Nice build!
I have the same problem with my tuned car but with a completely different setup. After the 7200 rpm I have a dip that nobody can explain. My tuner told me that this maybe was a heatsoak. I would be glad if you solve that problem to share how you did it.
By the way, which tuner do you have?
For my numbers you can check here:
https://z4-forum.com/forum/viewtopic.php?f=9&t=100283