Emissions Testing Results Are In!!
ok here is the results of Both of my tests, one without the TT chip and a cat, the other with both. Here is my setup:
Walbro 340, Hotwire Kit, 55# injectors, stock airbox, stock exhaust (with test pipe instead of a cat), TurboTweaks 93-94 octane street chip. 38psi fuel pressure (with line attached). with this setup I took it to the sniffer and these are the results:
Hydrocarbons
allowed: 0.8000 Grams/mile
reading: 1.8053 grams/mile
FAIL
Carbon Monoxide
allowed: 15.0000 grams/mile
reading: 22.5002
FAIL
Oxides of Nitrogen
allowed: 2.0000 grams/mile
reading: 3.9394 grams/mile
FAIL
As you can see I failed miserably, so today I went back with the same setup as listed above except with these changes:
- I put on a USED stock catalytic converter from a friend's GN in place of the test pipe
- I installed the Turbo Tweaks emissions chip
- I unhooked the wastegate actuator from the flapper
Everything else was exactly the same as my first run, fuel pressure, BP 93 octane fuel, everything.
Now here are the results of today's sniffer tests with the 3 changes done.
Hydrocarbons
allowed: 0.8000 grams/mile
reading: 0.1886 grams/mile
PASS
Carbon Monoxide
allowed: 15.0000 grams/mile
reading: 6.2690 grams/mile
PASS
Oxides of Nitrogen
allowed: 2.0000 grams/mile
reading: 1.0521 grams/mile
PASS
As they were testing it they stopped because it got a FAST PASS. The only thing i noticed with the chip was that the temperature was warmer than usual. I have a 160* thermostat and the temps rised up to 200* sometimes. the street chip's temp usually runs about 170*. Thats the only thing i noticed, coolant levels and outside temps were not out of the norm either, so i am assuming its the chip that made the difference. All in all it did great! I highly recomend trying out the TT emissions chip!