According to AirTexProducts:
Quote:
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Over the various drive cycles...should show improvements in the order of 5-7%.
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Here is their website faq
http://www.airtexproducts.com/mechwaterpump_faq2.html
Some guy on a domestic board claims he gained 10whp on his ws6.
Another trans am guy claimed 9.6whp
As for hondas:
http://www.honda-tech.com/zerosearch?id=6621424&page=1 (I dont know if that will work...its a h-t search results page)
http://www.honda-tech.com/zerothread?id=175204
http://www.honda-tech.com/zerothread?id=97535
http://www.honda-tech.com/zerothread?id=90270
there are a lot more...I just picked these.
General consensus:
4-6hp
Pain in the ass to install
Forever and a day needed to warm up the car - Not recommended for colder climates