I am about to have new gears installed and at the same time I am getting new exhaust installe. My question is I have tried to pass emissoins 5 times, and I was wondering since I getting rid of my exhaust can I maybe create some kind of exhaust leak whether at the headers, the intermediate pipe, or the muffler to help reduce the amount of gases that exit my tailpipes.

------------------
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER, NO CAT
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
2:73 GEARS
Rebuilt 700R4, with manual valve body
B&M Megashifter
Soon to be installed
3:73 Richmond Gears and 3" Hooker Aero Chamber
Corvette Servo & .500 boost valve
15.61@ 95.2mph G-Teched, 1-2 shift slippage
"There is nothing more addicting than speed"

 

Well you can but it most likely wont work. Just run your gas tank down to 1/4 and put like 8 bottles of dry gas in there.

 

I've tried that but with alcohol instead, didn't help.

------------------
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER, NO CAT
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
2:73 GEARS
Rebuilt 700R4, with manual valve body
B&M Megashifter
Soon to be installed
3:73 Richmond Gears and 3" Hooker Aero Chamber
Corvette Servo & .500 boost valve
15.61@ 95.2mph G-Teched, 1-2 shift slippage
"There is nothing more addicting than speed"

 

Mark put a standard 195 thermostate in your car and then see what happens. You may not have a computer controlled system but the hotter your engine runs "to a point" the more completely the gas is burnt. You also might want to get a cat put on your system, make it removalble ..IE 2 sets of headder collectors for quick R&R.
SSC

 

Exhaust leak won't help you. They don't check the quantity of gas.

I hate to say this, but you probably need a cat. Modern cats aren't a significant flow restriction, and really help clean the air.

Bite the bullet and get a cat. You can likely pick one up for less than $100.

--andrew

 

It's not really a money issue, it's more of a performance and sound issue to me. I can pay $14 a month to take the test until I pass so it's not big deal, it's just an idle test. By the time my car gets tested the temperature is around 200*, so I don't think I need to change thermostats. I readjusted the A/F mixture screws on the carb and that seemed to help, so maybe I'll keep tryin. I just figured if enough gas could escpape before they reached the collector hoses they attach to the tailpipes that it would reduce the readings.

------------------
'86 IROC
T-TOPS, TINTED WINDOWS, BRAKE LIGHT BLACKOUTS
GM GOODWRENCH 350
EDELBROCK TES HEADERS
FLOWMASTER, NO CAT
EDELBROCK 600CFM CARB.
KN AIRFILTER
ACCEL HEI DISTRIBUTOR
160* Stat
2:73 GEARS
Rebuilt 700R4, with manual valve body
B&M Megashifter
Soon to be installed
3:73 Richmond Gears and 3" Hooker Aero Chamber
Corvette Servo & .500 boost valve
15.61@ 95.2mph G-Teched, 1-2 shift slippage
"There is nothing more addicting than speed"