you didnt even tell us what you are driving.
btw.
if you try to fool modern EMS controlled engines, try reading that chapter here.
$19
All the facts in one little book, <<<, really good too.
save money from the sharks, get facts: read this.
Amazon.com: How to Tune and Modify Engine Management Systems (Motorbooks Workshop): Jeff Hartman: Books
keep note: each cars EMS acts differently by year and model.
so there will never be any guarantees ( for the truthful) on performance or effects of devices. ( unless you go whole hog, read the book)
