100 cell high flow cats

bcfromfl · 01-15-2018, 06:42 PM

I'm still shopping for a car to put this all in, but I thought I'd buttoned up my parts list for mods. Based upon some of the discussion in this thread: Cats with Superchargers I thought the general consensus was that HFCs properly broken in...or at the upper end of the spectrum, mil spec cats, would stand up to FI. I don't want a lot of noise from under the car...no drone...and no stink.

But now this:

Quote:

Originally Posted by redondoaveb

I did email them and Jon answered back. I told him what power I was making (540 whp) and his reply was "over time, that power will blow out any high flow cat".

OK, so what do those of us who don't want to make our ears bleed or annoy the neighbors do?

redondoaveb · 01-15-2018, 06:53 PM

Quote:

Originally Posted by bcfromfl

I'm still shopping for a car to put this all in, but I thought I'd buttoned up my parts list for mods. Based upon some of the discussion in this thread: Cats with Superchargers I thought the general consensus was that HFCs properly broken in...or at the upper end of the spectrum, mil spec cats, would stand up to FI. I don't want a lot of noise from under the car...no drone...and no stink.

But now this:

OK, so what do those of us who don't want to make our ears bleed or annoy the neighbors do?

From what I was told, you want to keep them downstream from the factory location so they aren't subjected to the extreme heat exiting the header pipe under boost. Fast Intentions places them right before the x pipe on their lead pipes. A lot of people run theirs with forced induction. Notice the Z1's are in the factory location.

Jayhovah · 01-15-2018, 07:37 PM

Quote:

Originally Posted by redondoaveb

Notice the Z1's are in the factory location.

And are also much cheaper cats. There are plenty of FI cars out there running cats... I think you are on the right track welding in the milspec's.

redondoaveb · 01-15-2018, 08:10 PM

Quote:

Originally Posted by Jayhovah

And are also much cheaper cats. There are plenty of FI cars out there running cats... I think you are on the right track welding in the milspec's.

Yeah, I think so too. I understand Mil Spec and GESI are both good cats.

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