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Tabz123 wrote: ↑Mon Apr 17, 2017 8:28 pm Hi All

In a z4 2.0 20i. I tried ending my first week of ownership by taking the car on a bit of a thrashing run. However when the car got near 6500-7000 rpm I felt a sudden loss of power until I moved from the 1st gear until 2nd. Maybe my driving skills are poor but I didn't expect any lag in that range ????

Smartbear wrote: ↑Mon Apr 17, 2017 8:37 pm

Tabz123 wrote: ↑Mon Apr 17, 2017 8:28 pm Hi All

In a z4 2.0 20i. I tried ending my first week of ownership by taking the car on a bit of a thrashing run. However when the car got near 6500-7000 rpm I felt a sudden loss of power until I moved from the 1st gear until 2nd. Maybe my driving skills are poor but I didn't expect any lag in that range ????

Hi, you're revving the car for the sake of it at those numbers-changing up earlier will give you harder acceleration & a longer engine life!
Look where the torque peaks on a standard 20i
IMG_0754.JPG
Rob

Tabz123 wrote: ↑Mon Apr 17, 2017 9:00 pm

Smartbear wrote: ↑Mon Apr 17, 2017 8:37 pm

Tabz123 wrote: ↑Mon Apr 17, 2017 8:28 pm Hi All

In a z4 2.0 20i. I tried ending my first week of ownership by taking the car on a bit of a thrashing run. However when the car got near 6500-7000 rpm I felt a sudden loss of power until I moved from the 1st gear until 2nd. Maybe my driving skills are poor but I didn't expect any lag in that range ????

Hi, you're revving the car for the sake of it at those numbers-changing up earlier will give you harder acceleration & a longer engine life!
Look where the torque peaks on a standard 20i
IMG_0754.JPG
Rob

Hi Rob

Ok that graph makes sense, especially the cliff edge as thats definately how it felt

Tabz123 wrote: ↑Mon Apr 17, 2017 9:03 pm Though Rob whats diff between those two graph lines ?

Next plan of action then is to keep it then at 5000rpm as your graph suggests.

It was not purely intentional as I was in my boots and foot was planted more than I had anticipated ( making excuses now) as the exhaust note is also better in 2nd and 3rd than in first

I hope reving hard like that once, can't cause damage to engine or transmission ?

Smartbear wrote: ↑Mon Apr 17, 2017 9:06 pm

Tabz123 wrote: ↑Mon Apr 17, 2017 9:03 pm Though Rob whats diff between those two graph lines ?

Next plan of action then is to keep it then at 5000rpm as your graph suggests.

It was not purely intentional as I was in my boots and foot was planted more than I had anticipated ( making excuses now) as the exhaust note is also better in 2nd and 3rd than in first

I hope reving hard like that once, can't cause damage to engine or transmission ?

The more horizontal of the two lines is the torque output, this is the force that pushes you back in the seat, the other line which peaks around 5k is the horsepower developed
Rob

Tabz123 wrote: ↑Mon Apr 17, 2017 9:03 pm Though Rob whats diff between those two graph lines ?

Next plan of action then is to keep it then at 5000rpm as your graph suggests.

It was not purely intentional as I was in my boots and foot was planted more than I had anticipated ( making excuses now) as the exhaust note is also better in 2nd and 3rd than in first

I hope reving hard like that once, can't cause damage to engine or transmission ?

Smartbear wrote: ↑Mon Apr 17, 2017 9:16 pm

Tabz123 wrote: ↑Mon Apr 17, 2017 9:03 pm Though Rob whats diff between those two graph lines ?

Next plan of action then is to keep it then at 5000rpm as your graph suggests.

It was not purely intentional as I was in my boots and foot was planted more than I had anticipated ( making excuses now) as the exhaust note is also better in 2nd and 3rd than in first

I hope reving hard like that once, can't cause damage to engine or transmission ?

You're engine should be ok, it's protected by the rev-limiter from owners like you
It should be fine.
Rob