:confused3:And about the cat on your 1.9, try to find it...
If you gut your cat you're creating an open air chamber that baffles the flow of air. It's not backpressure that you want in a good exhaust system, that's an old hot rodder's myth and is pure BS. What you want is exhaust stream velocity. If the pipe is too big, the exhaust doesn't travel fast enough down it to carry any inertia.. if it's too small, you have backpressure (which is always bad) and the exhaust can't get out of the way before the next cylinder fires. It's this inertia of the exhaust stream that creates a suction effect at the exhaust ports (negative pressure) and helps to scavenge as much exhaust out of the cylinders.. improving the intake breathing.on_dnbe said:When my brother had a Monte Carlo SS i remember taking the cat out and beating all the honeycomb out of it. Then we put it back in so when it was inspected it appeared normal but was really strait back. Can i do this for my escort for a hp boost or will the lack of backpressure make the motor weaker? oh... i have the 1.8
It's because I search.browntown said:holy old thread revival batman