Ok, i have my helix catless flex uppipe installed and caught the mod bug. I want to get a downpipe but am totally lossed in terms of which one to get? What in your opinions would be the best one to get. I want power and quality. Price not an issue. I know dp causes car to be louder. I want to get a cat-back late but dont want to be to loud, like over that 95 DB limit or whatever. Thanks for any help with this.
See if you can find the Invidia downpipe made for the JDM STi. It's identical to the Helix, except it has a third O2 sensor bung in the bellmouth, which will allow you to run a wideband O2 sensor without removing any of your stock sensors. It comes with a plug if you don't have a sensor to put in there.
i have the helix dp and the borla hush cat-back. love it not too loud just a nice deep rumble. i got the dp from gruppe-s. the was the cheapest place i found and i have had no problems
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