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Discussion Starter #1
whats the best downpipe to buy?
also after the downpipe is in, what is it safe to boost at?, im running stock
 

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The Stillen has a flex section, and eliminates the rear pre-cat and main cat. Great unit, but you would have to dice it up a bit if you want to run a catalytic converter (to stay legal and save the trees).

The ATR has no flex section, does not eliminate either pre-cat, and can be purchased with or without the test pipe (which eliminates the main cat). This is also a good unit, and it will easily accomodate a high-flow catalytic converter.

On a stock fuel system, most people run no more than 14-15 psi. The general consensus is that this is the max you can run safely without doing fuel upgrades. Obviously, 14 is more conservative.

You would need a Boost Controller to increase boost on your car.

For a list of Staged upgrades, check the 3SI "Tech Tips" page, or go to www.dynamicracing.com

The search function in this chat room can also answer a ton of questions. For more in depth info, check Jeff Lucious's repository of information at www.stealth316.com
 
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