[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Effects of Removing the Catalytic Converter
>What are the effects of removing the cat?
Removing the cat will give you more power, especially if it is a 84-85
exhaust system, but loosing the rest of the stock muffler system will help
I picked up almost 5 mph on my 86 by removing the stock exhaust system and
only running a downpipe. The car weighed 3164lb with me in the car and I
ran a email@example.com with a 2.1 60' time. It was 72 degrees with 42% rel humidity.
I then installed a new ATR SS exhaust system and ran the car weighing
3210lb with a best time of firstname.lastname@example.org with 2.0 60' times. The conditions
were much cooler at 48 degrees with 100% rel humidity. Two things to
consider, I picked up 60' time by running in the groove and it was a much
cooler day, but I am not sure if the humidity being so high helped any?
At any rate, running the two test runs through the horsepower calculator
resulted a beginning 207hp with open exhaust and a 200hp with the ATR
system. I am happy with the 7hp loss with the ATR system considering how
quiet the car is now.
I will give a compete run down on the ATR system very soon and post it for
85 SVO (Bright Red)
86 SVO (Silver Metallic)