GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

GS 400 V8, producing more than 400 horsepower at 8,200 rpm

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Old 04-21-06, 06:24 PM
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DASHOCKER
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Wish companies like Superchip and Jet Performance can come up with performance modules for the GS4 but they can't . Lexus really did a number with the ECU making it difficult to impossible to remap it
Old 04-21-06, 06:32 PM
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RMMGS4
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Originally Posted by DASHOCKER
Wish companies like Superchip and Jet Performance can come up with performance modules for the GS4 but they can't . Lexus really did a number with the ECU making it difficult to impossible to remap it

Jet tried way back in the 1999 timeframe.

No luck.

Yea Lexus really did a number on anti hacking into their code.
Old 04-21-06, 06:37 PM
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chuckb
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Originally Posted by RMMGS4
Jet tried way back in the 1999 timeframe.

No luck.

Yea Lexus really did a number on anti hacking into their code.
that's a bummer, I'll bet at least 30-40 HP could be gained just by aggressive ignition and VVT-i timing.

there has to be some computer nerd out there that could fix it.
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