Miatapower List Archive

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Mail From: (email redacted)

Hi gang,

This is my first post although I've been lurking in the archives for quite ahwile...

I've got a '94 N/A CSP autocross car, running a Link with the 3/25/03 chip. How does the Link handle base barometric pressure differences when N/A? I understand it reads MAP at start up, does it use this value to adjust fueling later?

My car's been autotuned near sea-level, but I'm heading up to an autocross at over 5000' this weekend. Should I auto-tune the WOT row on the highway after we get there? Or will it handle that by itself?

Thanks,

Jim Daniels
Gladstone, Oregon

This read-only message was archived from a public mail list.
Mail From: Ray <(email redacted)>

The atmospheric pressure is only used for boost control. Since you don't
have to worry about exhaust backpressure increasing as altitude increases (a
turbo car does) and you don't have a MAF sensor that requires pressure
correction, the required fuel changes should be minimal ... perhaps even
negligible. But you're plowing new ground here and I for one would like to
know what you actually find.


----- Original Message -----
From: <(email redacted)>
To: <(email redacted)>
Sent: Thursday, July 03, 2003 9:38 AM
Subject: N/A Link Tuning for Altitude Question


> Hi gang,
>
>
>
> This is my first post although I've been lurking in the archives for
quite ahwile...
>
>
>
> I've got a '94 N/A CSP autocross car, running a Link with the 3/25/03
chip. How does the Link handle base barometric pressure differences when
N/A? I understand it reads MAP at start up, does it use this value to
adjust fueling later?
>
>
>
> My car's been autotuned near sea-level, but I'm heading up to an
autocross at over 5000' this weekend. Should I auto-tune the WOT row on the
highway after we get there? Or will it handle that by itself?
>
>
>
> Thanks,
>
>
>
> Jim Daniels
>
> Gladstone, Oregon