Any emission test tips or tricks?, I'll be testing soon... Options

[914zim]

Dudes:

I live in southeastern WI and I need to get an emission test before I can get collectors plates on my '76 914.
Once I get the plates, I will not be required to get tested anymore.

Do you guys have any tricks or recommendations on how I might help it pass?
I've replaced the plugs, air filter, fuel filter, injectors, resealed the tank (fresh gas) and installed a used cat, but I'm missing the air pump. I think my '76 came with an airpump installed from the factory, but a PO must have removed it (and the cat). I've also installed a good used (ansa?) muffler into which I've installed the used cat.

Once (if) I pass, I'll remove the cat and put the bypass pipe back in.

Any good tips? (besides lising it as residing in another county where testing is not required)?
Thanks for any ideas that might help.
Andy...

[STL914]

Andy,
Are you in Milwaukee or Washington County?

My 74 2.0 failed last year here in St. Louis. After adjusting the idle, increasing the RPMs, took it back and it passed. Readjusted idle back to normal after second test.

Point is, by failing the test the first time, I knew what was wrong with the car and could tweek it to pass
second time.

I too have also heard that adding a bottle or two of HEET to your gas tank can help.

Gary
(former Cheesehead!)