Or just install a correct open flow cat.
For a bigger heavier flowing engine that is.  With the stock vanagon engines
the only way that cat should ever impede anything is if it is getting
plugged up.
jimt

On 7/18/05 9:14 PM, "' '" <rrecardo@webtv.net> wrote:

> The ticket for a non visual converter omission is to just knock out the
> stone, and bolt it back up.
>
> Contrary to the posting below the Van will breath on heck of a bunch
> better without the pin holed converter restriction in the way of the
> exhaust flow.
>
> The Van not only will show a much improved performance, it will give a
> little better fuel mileage, and the engine  ( if in  proper tune and all
> the electronic engine management item's are working properly ) will pass
> the mandated emissions tests.
>
> My converter's are all gone.
>
> Gutted.
> Visually they are still in tact.
>
> And the Van's pass with flying colors.
>
> A measurable improvement in engine performance over having the pin holed
> stone in the way.
>
>
>
> <<Note that some states enforce the fed regs which says if shipped with
> cat must have a cat. (all passenger vehicles sold in the US and Canada
> after a certain year in the 70s) If in an air state you most likely will
> not pass test emissions or visual.
> jimt
> On 7/18/05 3:05 PM, "John Bange" <jbange@GMAIL.COM> wrote:
> Performance, same or maybe slightly better. Mileage, probably no
> significant change. For emissions, your NOx and carbon monoxide output
> will go way up. Generally you won't see any significant improvement in
> power when removing the cat unless you also do something that NEEDS the
> extra flow, like porting or bigger valves.
> On 7/18/05, Christopher Gronski <gronski@gmail.com> wrote:
> This is an poitically incorrect question but I am going to ask it
> anyway. What happens if you run your vehicle without a catalytic
> converter installed? Assuming you had a bypass tube installed would you
> just install your exhaust sensor there? What would the effect on
> performance and mileage be? How much would your emissions go up?
> Thanks,
> Chris>>
>
>
>