Confused on exhaust

[Motorhead350]

Since no one responded to my question on exhaust I have been putting a little more thinking into it.

I was wondering if I needed a different tune for electric exhaust cutouts. A member on here said the car will run lean if not tuned when the ports are open.

Now I am thinking if the cutouts are after the O2 censors (the back ones are no longer used) would I actually have anything to worry about? I was planning on using them at the track and reving it at car shows.

A former member I contacted that had these said he didn't need a tune for opening and closing the pipes.

Anyone know what's best... besides no putting them on?

[RR|Suki]

Since no one responded to my question on exhaust I have been putting a little more thinking into it.

I was wondering if I needed a different tune for electric exhaust cutouts. A member on here said the car will run lean if not tuned when the ports are open.

Now I am thinking if the cutouts are after the O2 censors (the back ones are no longer used) would I actually have anything to worry about? I was planning on using them at the track and reving it at car shows.

A former member I contacted that had these said he didn't need a tune for opening and closing the pipes.

Anyone know what's best... besides no putting them on?

ECU doesn't use the O2 sensors at WOT either way.

[ImpalaSlayer]

ECU doesn't use the O2 sensors at WOT either way.

huh, never knew that. too slow i guess?

[Motorhead350]

Are you telling me no tune would be needed for the exhaust when it's open?

[RR|Suki]

huh, never knew that. too slow i guess?

not to mention they are narrow band. MAF is the go to guy (well it's more complex than that, more like a team effort)


Are you telling me no tune would be needed for the exhaust when it's open?

nope, didn't say that, just pointing out that the O2s aren't in charge at WOT. Best thing to do would be to hook up a wideband and see what happens