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Re: Are headers on a 3.8l v-6 engine worth it?
Basically by "bypassing the smog pump" I mean that I removed it all. I removed the smog pump and all the lines connected to it. Theres a line running down to the catalytic converter, I removed that one and plugged up the hole in the converter with a bolt. The other line connects to the rear of the intake manifold behind the carb. It's actually on the back of the manifold, facing the firewall. I removed the line from there and plugged the hole with a threaded plug fitting. A few more things that will boost HP a bit (not much, but every little bit helps) is upgrading your ignition system. I changed out my dist cap and rotor with a high performance set from Accel . Also put on some Bosch high perf 8mm triple silicone spark plug wires. And Bosch Platinum +2 spark plugs. Accel also makes a high performance ignition coil for this engine which I might get soon. Also, be sure to change your fuel filter (on the front of the carb) if you haven't already done so. Another thing I notice makes a BIG difference is the gasoline. I have been running 93 octane gas in my car. I notice that it runs much better, plus I actually get better mileage. I even did the math to prove it. Try filling up your car all the way full, then write down your mileage on the odometer. Then when you drive the car till it gets to "E" go fill it up all the way to full again. Then look on the gas pump to see how many gallons of gas your car just took. Then go write down the mileage again. Subtract the mileage from your mileage you wrote down before, and thats how many miles you drove on the number of gallons your car just took. So divide the number of gallons into the number of miles, and thats your gas mileage. Say for instance, you drove 212 miles. And your car just took 15 gallons to fill it up. Then your mpg would be 14.3 miles per gallon (212 divided by 15)Lately, I've been getting about 16 to 18 mpg on the highway (during road trips) and about 12 to 14 mpg for everyday driving. This is also with the AC on full blast at ALL times, so I can probably get even better mileage if it was colder outdoors.
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