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Discussion Starter #1
Well after driving very hard on the hollowed out first cat, No codes have come up. I am sure my emisions have gone up some but not enough to detune the car. The gains are very good from any point in the RPM range. I went with the hollowed cat because the test pipe was only 2.25". The cat has a 3" in and out with a what looks to be 6" can. I do hear a new noise, Sounds to be valve lash. I am unsure of that, But i did keep the old CAT just incase i need the dealership to do any service work.

Thats it for now.
Oh, I found the write up in Sport Compact Car on the Swift
It might be old news to guys, But it's about damn time Suzuki
Gets a golf clap.

Suzuki Swift Sport - Sport Compact Car Magazine
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