Don't Look Back

I am planning on buying a 160* stat, so I was checking out SLP's site, since they're only 20 minutes from my house. Under the product description, it says "Not for use on pollution controlled motor vehicles" Why??

QUASARBLUEZ28

Good question. I've run a 160 stat for years and never had any emmission inspection problems. Last test the guy swore I was running dual cats the test was so clean.

Tony Danza

a 160 stat will not fail you on emissions

94_Z28_guy

This is a general statement, maybe doesn't apply to our cars, but emissions should be taken with the car warmed up to operating temperature. This is supposidly where emissions is the best (burns fuel most efficiently, etc.) If the 160 thermo keeps it from reaching the operating temperature the car was designed for best emissions, it could fail the test. But if nobody fails it with a 160 thermo, then it must not.

Don't Look Back

Thanks, guys, thats pretty much what I was thinking, with operating temperatures and all.

SiDeWaYZz28

im suppose to get smoged today i have a 160 i hope i pass....but i dont know if im going to go i just got the *****in fflu so im sick but i want to smog it today so i can start my header install this weekend...has anybody had problems passing in cali with a 160 thermo...o yea i had a question having a high performence ingnition and coil will it help you pass smog??? thanks

Injuneer

At worst, lower head/combustion chamber temps will increase unburned hydrocarbons (HC) and carbon monoxide (CO). On the other hand, it will reduce oxides of nitrogen (NOx). But the change is very small.... it would only be a problem if you were borderline to begin with.

Outifts like SLP have to include that statement, unless they have submitted technical test data, proving that the mod does not affect emissions, to the proper authority... typically the California Air Resources Board or CARB. Unless a part has the CARB-EO emissions exemption, they are pretty much forced to state... "not for use on pollution controlled vehicles".

SlickBlack Z

Keep in mind that when switching to a 160 thermo, it is important to get some type of computer program (such as hypertech) to turn the fans on sooner than the stock program.

truedualws6

I have passed the last two times w/o any problems
or questions.

z28marine

i passed with one, i dont think you should ever worry about it...in fact, you shouldnt!

Don't Look Back

Thanks for the heads up, I plan on buying/making a manual fan switch.