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For sale, as I don't need it anymore, cause selling the car. The items are brand new/boxed and arrived just today. Items bought from Flat 4 Engineering.
1. Invidia Equal Length headers 4-2-1 800GBP + shipping. +02 WRX/STi.
2. Invidia Titanium cat back exaust 3" 800GBP + shipping. +03 WRX/STi. De-cat downpipe- CEL fix included.
The power gains: "The manufacturer got about 60 hp out of the complete system. The reason it was so high was the power arrived almost 1000 rpm earlier."
You can check out the prices on their web www.flat4engineering.com. I am not trying to make any money out of it, just selling it a little bit less what it cost me in total. P.S. Got the air waybill to prove it if intrested.
2 Scooby96: M8, I asked them b4 buying this set- that's what they told me. You can e mail them and ask the same question. I quoted this from their e mail.