Test pipe..

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Test pipe.. - 9/16/2007 7:06:21 PM    Fendogg   Posts: 10 Joined: 9/16/2007 Status: offline If I was to fab up a short downturned testpipe coming from the header collector, that I could easily swap back to the street pipe/silencer, would that negatively affect performance without some tuning? I'm sure it would be F1 car loud.  Post #: 1

RE: Test pipe.. - 9/16/2007 7:06:58 PM    Fendogg   Posts: 10 Joined: 9/16/2007 Status: offline Oh yea its an 02' F4i (in reply to Fendogg) Post #: 2

RE: Test pipe.. - 9/16/2007 7:20:06 PM    doncollins Posts: 6225 Joined: 7/21/2005 From: OH, KY & WV Status: offline Yes it will, going from exhaust to no exhaust ... just a pipe will change the fuel to air ratio and not give you what you're looking for.  I'm not an engine expert, so you may need better advice here, but it could damage or at least shorten the life of your engine.  I mean your plugs are going to wear out faster and your engine will build up carbon faster screwing up the valves and so on.... like I said, not an expert, but from my limit knowledge, I wouldn't do it unless you have a PCIII and a map for each setup.  _____________________________ (in reply to Fendogg) Post #: 3

RE: Test pipe.. - 9/16/2007 8:10:03 PM    Hatebreed Posts: 1204 Joined: 4/29/2007 Status: online yah, it would be great if you had power commander to change map but if you cant tune it for the new downpipe i wouldnt do it... _____________________________ myspace.com/forrest_bds (in reply to doncollins) Post #: 4

RE: Test pipe.. - 9/17/2007 7:18:51 AM    Fendogg   Posts: 10 Joined: 9/16/2007 Status: offline Ok well, I'll try getting a Power Commander and tune it.  I'm assuming no backpressure from an exhaust would lean it out? (in reply to Hatebreed) Post #: 5

RE: Test pipe.. - 9/17/2007 4:35:04 PM    doncollins Posts: 6225 Joined: 7/21/2005 From: OH, KY & WV Status: offline Any exhaust change will mess with the fuel/air ratio, one as extreme as no an open pipe needs to be mapped.  _____________________________ (in reply to Fendogg) Post #: 6

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