THDP 3" Cat good in Cali

[Smokin_GN]

Was just wondering if anyone could help me with this quick question...

Does the 3" THDP Cat cover HC, CO, and NO for smogs in Cali?? I hear that most cats only cover HC & CO. Any info would be greatly appreciated.

If that Cat works...I'll be giving Ramchargers a call tomorrow!!

Thanks.

 

[Gary Wells]

If that is a TH high performance cat, then it is a 2 parameter cat, not a 3, but my car which was bone stock at the time other than a THDP & matching TH 2 parameter cat smogged & passed ok. I am sure that Gofstbuick will chime in and explain the differences.

 

[gofstbuick]

The cat with the THDP is two-way cat only. This means it will process HC and CO only. An ATR cat is three-way (processes HC, CO and NOx), but will not fit the THDP. Maybe Ramchargers can sell you a three-way cat that will fit the THDP

 

[TurboDave]

When I was living in CA a couple years back. My TH cat worked just fine! Car blew REAL clean. But I made sure I was running a good smog chip, and my EGR was working correctly.

 

[gofstbuick]

When I was living in CA a couple years back. My TH cat worked just fine! Car blew REAL clean. But I made sure I was running a good smog chip, and my EGR was working correctly.

Like Dave says, nothing is more beneficial than a good state of tune

 

[Drip Pan]

Hello,
Another testimonial that a good TH cat works. This was with 72's, bigger cam & turbo, stock MAF, regular street chip and a functioning EGR....