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sab123 · 07-06-2009, 12:57 PM

I've noticed that the exaust pipe on my '93 Z28 rusted through. I need a new exhaust. I wonder, what experience do people have with different brands? It's an autocross car, so my priorities would be:

1. Power, lightness and low price
2. Quiet

So far the posibilities seem to be:

Flowmaster, cheapest at ~$300, not stainless but it's probably OK.
Magnaflow ~$400, stainless.
Borls ~$800, stainless

Could not find the weights for them. GRM did a comparison for BMW 335, and Borla was the lightest by a wide margin, decent power (though nowhere like the claimed 7-10% improvement, more like 5HP out of 300) and not the most loud but louder than stock. Do I understand right that I can just block off the right side on Borla and not install the right-side tips at all? Would it affect the power?

I sthere any power and weight difference between the single-sided and dual-sided Flowmaster?

Do I get it right that 3" is the stock size of the catalyst flange?

07-06-2009, 12:57 PM	#1
sab123 Join Date: May 2009 Posts: 43 iTrader: (0)	exhaust? I've noticed that the exaust pipe on my '93 Z28 rusted through. I need a new exhaust. I wonder, what experience do people have with different brands? It's an autocross car, so my priorities would be: 1. Power, lightness and low price 2. Quiet So far the posibilities seem to be: Flowmaster, cheapest at ~$300, not stainless but it's probably OK. Magnaflow ~$400, stainless. Borls ~$800, stainless Could not find the weights for them. GRM did a comparison for BMW 335, and Borla was the lightest by a wide margin, decent power (though nowhere like the claimed 7-10% improvement, more like 5HP out of 300) and not the most loud but louder than stock. Do I understand right that I can just block off the right side on Borla and not install the right-side tips at all? Would it affect the power? I sthere any power and weight difference between the single-sided and dual-sided Flowmaster? Do I get it right that 3" is the stock size of the catalyst flange?