> Pedro Valdez wrote:
> I spotted a listing on eBay what claimed:
> Available for all new style LS series engine that have a separate
thermostat and water neck. These thermostats are available in 160, 180
and 195°F temperatures to suit any application. Mr. Gasket's 2005
Pontiac GTO test car gained 5 hp with the 180° unit.
>
> Surely if you were testing maximum power on a dyno, the engine
would warm up beyond the standard 195 degrees. How can it make a
difference?
> More likely the extra HP came from somebody turning off the
aircon.

Engines perform much worse with modifications of this
nature without tuning.

Stick to stock unless you're going to follow through with tuning.
Asking the factory ecu on most engines to cope with this is a way to
kill your cats quicker or have it run worse.


This is a response to the post seen at:
http://www.jlaforums.com/viewtopic.p...5443#584335443