More Horsepower. More Torque!!

[David A. Cooley]

>I've come across a chip or two that actually has closed loop mode
>disabled (via setting the coolant temp real high) so you are always
>running in open loop.  Anyone have ideas on why a chip maker would do that?
>

Most likely because that maker only had a tiny bit of info for that cal and
rather than take the time to reverse engineer it and find the proper tables
to modify, made it a open loop chip with a fixed fuel curve.
Most likely, one of these chips won't always make the best power, and
economy will suffer greatly.



>Sorry, I should have stated more properly that if you remove the cats,
>you aren't street legal.  When I said that, I had in mind the ZR-1,
>where the cats are attached to the exhaust manifolds, so going to headers
>would mean no cats (unless you pay even more for headers with cats).


Ah..
Wasn't aware the ZR1 had the cats as part of the manifolds... Makes sense
though with the limited room under a vette.
Can they be removed at all from the manifolds?
If so, sending the manifolds to be extrude honed might be worth a few HP.