2.8 cams on S4

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cbr-

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	2.8 cams on S4 « on: April 16, 2015, 04:54:59 PM »

What needs to be changed at tune to run properrly with 2,8 cams on s4 ?


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mounty

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	Re: 2.8 cams on S4 « Reply #1 on: April 20, 2015, 03:55:22 PM »

In for info as We'll.


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ddillenger

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	Re: 2.8 cams on S4 « Reply #2 on: April 20, 2015, 04:57:58 PM »

Get a dyno. Set KFNW=1 throughout the entire map. Dyno. Set KFNW=0 throughout the entire map. Dyno. Overlay dyno charts. Set changeover where the lines intersect.

This assumes you have already tuned errything else.

HOWEVER, you can't just "tune" around the shitty overlap.

You can accomplish most of this with logs as well. Can I tell you what to do? No. It varies based on turbo choice, and many other factors.


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Snow Trooper

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	Re: 2.8 cams on S4 « Reply #3 on: April 20, 2015, 07:34:06 PM »

Dont run advanced over 6000, it is pointless on 99% of setups.

Mod the axis to end above 5000.

Rarely will you ever have much use of it being on over 5200ish. In extreme cases maybe in the 6000 range but even then its better to shut down sooner.

All 2.7t benefit from it being raised even a little bit. All bigger than stock turbo cars should approach 5000 for shutoff.


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vwaudiguy

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	Re: 2.8 cams on S4 « Reply #4 on: April 20, 2015, 08:40:56 PM »

Quote from: Snow Trooper on April 20, 2015, 07:34:06 PM

All 2.7t benefit from it being raised even a little bit. All bigger than stock turbo cars should approach 5000 for shutoff.

Any thoughts on 1.8t's?


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ddillenger

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	Re: 2.8 cams on S4 « Reply #5 on: April 20, 2015, 08:55:59 PM »

I have run it out to as far as 6200 on BIG turbo setups. I have seen companies (cough, 034, cough) leave it advanced until redline when logging Tial cars.

You really need to experiment, see what works best. The 2.7, 1.8 are the easy ones. You have on, or off, and one cam. Later ecus are not so simple.


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mounty

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	Re: 2.8 cams on S4 « Reply #6 on: April 21, 2015, 03:40:31 PM »

That's a very simple way to do it. So everything else is the same but the cam change over.


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ddillenger

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	Re: 2.8 cams on S4 « Reply #7 on: April 21, 2015, 06:47:28 PM »

Quote from: mounty on April 21, 2015, 03:40:31 PM

That's a very simple way to do it. So everything else is the same but the cam change over.

No, but that's all you have control over.


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mounty

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	Re: 2.8 cams on S4 « Reply #8 on: April 22, 2015, 02:08:55 PM »

Oh. So much for understanding then. Lol.


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