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#21
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read ljnlaw's post.
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#22
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So I guess headers and exhaust and first on my list of mods when I get my E60. Im sure you will need a software upgrade for that kind of mod. does anyone make it yet for a car with exhaust mods. By the way are there any intake mods out yet. And whats up with that extra filter the NA cars get that the euros dont. Supposedly it gives like 10hp by removing it. Is this true and if so does removing it hurt anything and does anyone know why we have it and the euros dont
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Dinan M3 2006 X5 4.4i Sport Current Vehicle 2006 CLS 55 AMG Current Vehicle 2010 FORD F-450 King Ranch Current Vehicle 2012 GL 550 Current Vehicle 1999 M3 Dinan S3 SOLD 2001 M3 Dinan S2 SOLD 2002 M5 SOLD 2004 X5 4.4i sport SOLD 2007 335 XI Lease ended 2009 E92 M3 SOLD |
#23
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AA makes software. Works pretty well as I have it on mine. The charcoal filters don't do shit.. only there for emission reasons. I have them removed. With the both mods in place, pretty significants gains on the dyno on both HP and torque. Can't justify at the moment on spending 7G's on headers though.. The price will come down..
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#24
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Of course I did not mean just throw on headers without an exhaust...however from what I understand from many in the bizz including Turner Motorsports, Metric Mechanic, etc. the place you create the most hp (from the engine to the pipes) is straight out of the engine (i.e. the headers) you are not going to get any real gains with an exhaust system. While I don't know anything about the M5 exhaust system other than what I have seen, these are the general rules: You have to create a way to get those hot gasses out as quickly and efficiently as possible. Headers and jet hot coating are not just BS they work...exhaust systems may sound great but they really don't do much for improvements in hp. Just my .02
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#25
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here's the problem, yes header out will create HP, at the huge expense for torque. Replace with a better flowing exhaust with high flow cats will give you HP and torque improvements. The whole point of Jet Hot or any other exhaust wrap is the the exhaust itself to retain heat within the header so it can evacuate the hot gases better. (same as ceramic or inconel headers).
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