ZR1 service in NorCal
 

I just recently purchased a 91 ZR1 and am having problems passing smog and secondary throttle issue. Does anyone know of a ZR1 shop in N California (Bay Area).

Re: ZR1 service in NorCal
 

nope but I am pretty sure that cali made it hard to pass one of these cars today than it was when they were new so you may not have anything wrong.

I have seen guys have chips burned just to pass smog.

Re: ZR1 service in NorCal
 

I just went through the Cal smog not passing the last couple of monthes. I can help with advice and hands on work. Finally passed after the usual injectors, O2's, vacuum leaks, coil, wires, plugs and a used set of cat/converters[found out mine were gutted]. She was so clean you could breathe the exhust. PM me with a phone # if you want to talk.

Bob

Re: ZR1 service in NorCal
 

What are your testing numbers?

Re: ZR1 service in NorCal
 

If you need gaskets, seals, coils, plug wires, sensors, parts, etc. check us out at www.jerrysgaskets.com. I hope you resolve the emissions testing without a lot of hassle & expense.

Re: ZR1 service in NorCal
 

Im in Fremont,I can give you a hand or I know of a few good shops that can work on the car.I had a hard time getting my 18,000 mile 91 to pass to I might have a few tricks to try.

Re: ZR1 service in NorCal
 

My numbers were the following:

25 MPH

READING TARGET
HC PPM 144 78
CO 0.39 0.72
CO2 13.5
O2 0.8
NO(x) 599 545
P.E.F 0.486

15 MPH

HC 154 78
CO 0.34 0.72
CO2 13.3
O2 1.0
NO(x) 797 545
P.E.F .486


Has anyone had experience with Max at Race Street Rally in Santa Clara?

TPR60-Where did you find used cats and what o they run?

Re: ZR1 service in NorCal
 

It is illegal to buy used catalysts in CA since 2008 or so.

If you do, they don't really have anyway of knowing, but it is an 'out' if you want to build your own with the one cat approved for the car grafted onto some headers. You might be able to get a ref to sign off on it.

Re: ZR1 service in NorCal
 

Its the MAX Nox levels that are killing everybody.2 years ago the MAX Nox level was 702,now its at 502.

Re: ZR1 service in NorCal
 

I got the used manifold/cat assy. from a fourm member in ILL. $160.for the pair plus $75 to ship. My final smog results showed HC 3ppm [started at over 400] and co's of 0[zero]. I am in a static test county, you are in a enhanced smog county.