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Originally Posted by vinszr1
Thinking about purchasing a Haibeck chip
Whats the difference between 4168 AYBK and 8555 AUAH prom codes?
Vince
90 red/red #1966
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I wouldn't worry too much about the difference between the two generations of firmware.
You
CAN NOT go wrong with a Haibec Prom.
'Nuff said.
Things you won't miss:
CAGS
Elevated engine temps in around town driving
Fluctuating idle
Things you will love:
Rock solid 600 RPM idle
More top end pull (around 10 HP)
More TQ at bottom end
(I get loss of traction in 2nd gear just by mashing the go pedal)
Stable engine temps in traffic
Marc is a GREAT guy and a wealth of information.
TomC