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      05-07-2013, 12:59 AM   #1
persian54
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SoCal TRACK DAY!: Streets of Willow 05/25-26

SoCal TRACK DAY!: Streets of Willow 05/25-26

Price is CHEAP, only $110 with discount code is sow29

If you have any questions, please email them... I will try to help out when I can, but I don't have technical/specific answers:

sung@extremespeedtrackevents.com


Registration link: http://www.extremespeedtrackevents.c...t-registration

There will be Free Timing and Free lunch for ALL drivers who register, as well as Free Basic on track instruction for beginners


Couple photos from previous events: (I suck at taking pics so sorry if they're crappy)













I'll be in my Z4, so come say hi!


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      05-07-2013, 01:49 PM   #2
nicknaz
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Sean, remind me if you have additional cooling equipment (higher wattage radiator fan, auxiliary radiator etc) on your Z4?

I was in Rosamond on Wednesday with my stock 35i and it was a total limp mode party...
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      05-07-2013, 03:40 PM   #3
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Quote:
Originally Posted by nicknaz View Post
Sean, remind me if you have additional cooling equipment (higher wattage radiator fan, auxiliary radiator etc) on your Z4?

I was in Rosamond on Wednesday with my stock 35i and it was a total limp mode party...
Z4 is stock except for wheels (Apex EC-7s) and tires (RS3s).

Do you have a 6MT or DCT?

My temps got really hot at Chuckwalla this past weekend, ~300-310, hitting 320 before i did a cool down lap

the way I keep the temps down is I do 1 warm up lap, ~3 hot laps, cool down half lap to a full lap, then start again.

you can't go all out the entire session, the car can't handle it. This is where the NA S65 in my M3 shined, i had no issues with heat or excessively high oil temps


Reason I asked what tranny you have is: Do you maybe shift too much?
When it's hot, it's best to try and not shift excessively from what my experience. and lift off a little earlier that you would on a cooler day
This is just the nature of stock turbo cars (heck, even modified ones)

I remember 1 turbo car catching on fire Saturday, and at least 2-3 more having engine issues due to the heat.

Limp is nothing compared to what these JDM guys experience..
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      05-07-2013, 06:59 PM   #4
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Quote:
Originally Posted by persian54 View Post
Z4 is stock except for wheels (Apex EC-7s) and tires (RS3s).

Do you have a 6MT or DCT?

My temps got really hot at Chuckwalla this past weekend, ~300-310, hitting 320 before i did a cool down lap

the way I keep the temps down is I do 1 warm up lap, ~3 hot laps, cool down half lap to a full lap, then start again.

you can't go all out the entire session, the car can't handle it. This is where the NA S65 in my M3 shined, i had no issues with heat or excessively high oil temps


Reason I asked what tranny you have is: Do you maybe shift too much?
When it's hot, it's best to try and not shift excessively from what my experience. and lift off a little earlier that you would on a cooler day
This is just the nature of stock turbo cars (heck, even modified ones)

I remember 1 turbo car catching on fire Saturday, and at least 2-3 more having engine issues due to the heat.

Limp is nothing compared to what these JDM guys experience..
DCT. In S mode the computer was short shifting and not downshifting, as expected, to keep the car out of high rpms as the oil got past 270F

I think if the Z had the cooling gear that the 1M/335is had it would do better.. I agree it can't handle going all out more than a few minutes.
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      05-08-2013, 12:57 AM   #5
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Quote:
Originally Posted by nicknaz View Post
DCT. In S mode the computer was short shifting and not downshifting, as expected, to keep the car out of high rpms as the oil got past 270F

I think if the Z had the cooling gear that the 1M/335is had it would do better.. I agree it can't handle going all out more than a few minutes.
I don't use S mode, i feel it shifts awkwardly.

I always use manual mode so that it's in the right gear

Make sure you are driving in Sport+, otherwise it won't drive right (from my experience)

270F is nothing, you shouldn't go into limp mode at 270

320+ is where you start risking limp mode. 330+ for sure

You may want to consider a BT cable to clear those codes, or a CT cable
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      05-08-2013, 01:19 PM   #6
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Quote:
Originally Posted by persian54 View Post
Make sure you are driving in Sport+, otherwise it won't drive right (from my experience)

270F is nothing, you shouldn't go into limp mode at 270

320+ is where you start risking limp mode. 330+ for sure
I feel power reduction starting at 270F. Big power reduction at 300.. feels nonturbo
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      05-08-2013, 01:40 PM   #7
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Quote:
Originally Posted by nicknaz View Post
I feel power reduction starting at 270F. Big power reduction at 300.. feels nonturbo
i feel a slight reduction but not enough to say it feels nonturbo.... that's weird.
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      05-19-2013, 10:17 AM   #8
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Originally Posted by persian54 View Post
i feel a slight reduction but not enough to say it feels nonturbo.... that's weird.
As I read up on this, it seems that people get limp mode based on a variety of other factors as well, like the coolant or gearbox. Who knows, perhaps those were coming into play, and I don't have a way to measure them.

Last edited by nicknaz; 05-19-2013 at 10:23 AM.
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      05-19-2013, 09:28 PM   #9
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Quote:
Originally Posted by nicknaz View Post
As I read up on this, it seems that people get limp mode based on a variety of other factors as well, like the coolant or gearbox. Who knows, perhaps those were coming into play, and I don't have a way to measure them.
I would love to go out with you in your car to see/feel these first hand
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