Who has upgraded their exhaust and if so.....
#1
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what difference did it make. HP, torque, sound??? is it worth it? My car is stock and will not change the ECU (no flame please!). I contacted Neuspeed and APR. Thanks.
#2
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Upgrading exhaust is only necessary if you chip. Stock exhaust is adequate for stock engine. In fact, a high flow exhaust may lead to a slight decrease in low end torque unless you are chipped. IMHO, don't bother with an exhaust unless you are chipped. Use the same cash to upgrade the suspension. Just curious....what is your reason for not wanting to chip?
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