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Seeing red after red -line

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Tabz123
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Seeing red after red -line

Post by Tabz123 » 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 ????
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Tabz :thumbsup:

Cruising in a E89 Z4 2.0 20i msport (black/red)

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Chris_D
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Seeing red after red -line

Post by Chris_D » Mon Apr 17, 2017 8:34 pm

You tried taking it to the limiter before it ran out of puff?
If ur not on a dragstrip i'd suggest utilising only 2nd/3rd as ur sprint gears.
E85 3.0i roadie (03) 'Benny'. E93 320d M-Sport Cabrio (11) 'Bob'.
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Smartbear
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Seeing red after red -line

Post by Smartbear » 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 :wink:
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Tabz123
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Seeing red after red -line

Post by Tabz123 » 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 :wink:
IMG_0754.JPG
Rob
Hi Rob

Ok that graph makes sense, especially the cliff edge as thats definately how it felt πŸ˜‚
Tabz :thumbsup:

Cruising in a E89 Z4 2.0 20i msport (black/red)

Tabz123
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Seeing red after red -line

Post by Tabz123 » 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 ?
Tabz :thumbsup:

Cruising in a E89 Z4 2.0 20i msport (black/red)

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Seeing red after red -line

Post by Smartbear » Mon Apr 17, 2017 9:04 pm

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 :wink:
IMG_0754.JPG
Rob
Hi Rob

Ok that graph makes sense, especially the cliff edge as thats definately how it felt πŸ˜‚
Matters can be improved with these cars, they have exactly the same engine & turbo as the 28i-it responds very well to software fettling :wink:
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

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Seeing red after red -line

Post by Smartbear » 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 :thumbsup:
Rob
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Tabz123
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Seeing red after red -line

Post by Tabz123 » Mon Apr 17, 2017 9:11 pm

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 :thumbsup:
Rob
Thanks for that Rob!

Indeed, contacted Unicorn Software Developments in Stockport and they asked Β£400 to upgrade to 270bhp. Maybe I should book my trip soon!
Tabz :thumbsup:

Cruising in a E89 Z4 2.0 20i msport (black/red)

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Seeing red after red -line

Post by Smartbear » 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 ?

Your engine should be ok, it's protected by the rev-limiter from owners like you :lol:
It should be fine.
Rob
Last edited by Smartbear on Mon Apr 17, 2017 9:48 pm, edited 1 time in total.
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e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold

Tabz123
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Posts: 88
Joined: Fri Apr 14, 2017 12:26 pm

Seeing red after red -line

Post by Tabz123 » Mon Apr 17, 2017 9:26 pm

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 :lol:
It should be fine.
Rob
Haha Harsh! But Fair ! :rofl:
Tabz :thumbsup:

Cruising in a E89 Z4 2.0 20i msport (black/red)

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