Quote:
Originally Posted by RickRay
Forgive my ignorance on this subject....BUT How can one header not throw a Cel and the other does. Is it the size of the pipes? I mean there is no moving parts....They are all built the same way...3 tubes into 1...  .I had to ask   |
The shorties are typically not throwing CELs because they don't screw up the rear o2 sensor readings. The Doug Thorley shorties I think are the only ones so far that have had zero CELs.
To the op: you have to first decide on long tubes or short tubes.
Long: more power, but will throw a CEL and you will need a tune probably to get rid of it, emissions problems.
Short: Less power, awesome sound, no CEL, no need for a tune, emissions legal
Once you pick long vs short, then you can debate which brand you want to go with within that category.