From digest.v6.n617 Sun May 4 08:03:27 1997
From: Land Shark <lndshrk_at_>
Date: Sat, 03 May 1997 17:31:58 -0600
Subject: Chips and Emissions..
>Do any of you digesters have a Bonneville Motor Werks (aka Jim C.) chip on
>your '95 M3
>in a state where they test for emissions? If so, does it pass the sniffer
>test, or do you have to have the stock chip in the car to pass?
Umm Keith.. they test emissions right here in Utah ;)
The KEY to passing emissions with ANY BMW is to make sure the cats
are HOT when testing... you need to rev the car up to about 3000rpm and hold
for 1 min every 3 min while waiting to keep the cats hot..
I dunno how it is in CA, but here in UT, the emissions places ALWAYS seem to
have a waiting line..
When the cats are hot, it will pass a sniff test like a stock chip!
When cold.. even a STOCK chip fails horribly..
Of course, these chips ARE for OFF ROAD USE ONLY...
<CARB is happy now that I said that ;) >
[ Help ]