Quote:
Originally Posted by airrick
Generally 4-1 El headers are for power at the top and4-2-1 El headers are more for the mid range. 4-1 headers are for people that are actually rev their car to redline, which i dont do, alot. And i really wanted that torque dip to go away. And it has =)  most people want to look at the numbers only but best comparison is to drive them.
I think his E85 % content was higher when he tuned his car. mine was at only e55. I suspect his ethanol content was higher than mine. |
Another thing about mid range vs top end. Mid range torque cost less fuel than top end power. Maybe? How would we test this? Hmm...