Don Nguyen

iTrader: (2)

I am trying to figure out how close I can mount an exhaust cut out to the engine's exhaust ports without causing issues such as too much of a loss in back pressure, resulting in burnt valves, etc?

Technically speaking, can I run the exhaust cut outs right the headers, essentially as if I was running open headers on the car.

Also, assuming using shorty headers and not long tube headers.

thanks.

-Don

SSCamaro99_3

iTrader: (1)

I wouldn't run a cut out right off of shorty headers. You may damage your vehicle.

Don Nguyen

iTrader: (2)

Only reason why I ask, is because I will be putting it on an engine that has a swap, so I am not worried about clearance to the actual body of the car itself, but more so the engine's internals/function.

BLK95-Z

iTrader: (2)

Mine has been dumped after the Y for 15k miles with out any issues.

thunderstruck507

iTrader: (18)

You have more to worry about the cutouts being too close to the o2 sensors and causing issues there than burning up the valves.

Don Nguyen

iTrader: (2)

How far away from the o2 sensors would you recommend or is recommended.

greenvortec97

iTrader: (1)

no less than 8 inches

thunderstruck507

iTrader: (18)

It depends on if you are going to use them at the track or on the street too it seems.

Mine are around a foot or more back but a lot of low-mid rpm stuff and the car will surge and run poorly at idle and low speed.

If you intend to run them open a lot on the street I would shoot for no less than 2 feet

Don Nguyen

iTrader: (2)

Thanks for the info/input. I was planning on using it on the street only every now and then.

-Don