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Old 04-18-2001, 03:11 AM   #1
LXHATCH
Registered Member
 
Join Date: Dec 1998
Location: FLINT/ MICH
Posts: 96
Post supercharging, and c-4 vacumn modulators, problem w/ upshifts

having a problem since supercharger install:

My c-4 set up w/ manual/ automatic,
seems to upshift at aprox 1000 rpms higher or so in drive thru the gears, since a supercharger install.

Before the supercharger install, the trans shifted at 56-5800 in drive
now, with a roots blower,
it seems as the boost pressure on the modulator is causing higher than normal upshifts, would like to be able to get the upshifts back to around 5600-5800, as now i
will be hitting the rev limit set at 6000
on my msd
anyone had a similar experience ?
THANKS, LX
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