MC tweaks

[Eric_R_Kissell at whirlpool.com]

"Cody" <Cody at mail.craincorporated.com> wrote:
[snip]
>With the boost set at 2.4bar absolute I get great mid range
>power, but after about 3000rpm the boost starts to drop
>until arround 4500rpm it levels off at 2.0bar.
[snip]

Which turbo are you running? K26?

My guess is that if you are pushing 2.4 Bar at 3000 rpm with a K26, then
you may be seriously heating your intake charge due to the inefficiency of
the K26 at those pressures and flow rates.  If this is true, then you would
actually get more power by running with less boost due to less heating.

What does the turbo map for the K26 look like? Is the turbo in a happy
place moving enough air for a 2.2L turning 3000 rpm at 2.4 Bar? Is 2.4 Bar
even on the map for a 2.2L at 3000rpm? Is it operating to the left or right
of the surge line?

Obviously I do not have a turbo map for a K26 in front of me now. I believe
SJM has one on his site. I will have to look at it later.

HTH,
Eric Kissell
1991 200q 20v Avant, Koni Sports (yellow), eBay Surprise
1989 200q 10v Avant, Boge Turbogas, 1.8 Bar (qlcc)
1986 5000cstq Sedan, Bilsteins, 1.8 Bar (SJM)