Re: Replacement cat
Is there any credible info out there that supports benefits of a high flow cat? Being an engineer I struggle with claims like: I got 5 mpg more after installing a high flow cat, or I can really feel the difference, etc. To feel a performance improvements you'd have to gain a minimum of 5% hp/torque that would mean 10-15hp depending on SSEI or SE, SLE. I am all for perfromance gain as long as there are any. Gaining hp and loosing torque make most of the time "no sense". I can see feeling more power IF you replace a clogged, old cat....
2005 SLE Graystone