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Old 07-04-15, 23:44
Pleiades Pleiades is offline
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Join Date: Aug 2010
Location: North Norfolk
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Quote:
Originally Posted by _Josh View Post
Regarding air filters - If I fit a DNA stage 2 filter do I also need to keep the stage 1 filter in (and replace with a K&N/DNA) or does the stage 2 acting as a primary filter mean the internal filter is not needed? I'm also assuming that the snorkel is to be removed as well.
If you run the stage 2 airbox cover you must still retain the internal (stage 1) filter. You can run with a stage 2 cover and the stock inner filter, the airflow would be increased over stock, but you wouldn't be maximising the benefits of the stage 2 without the stage 1.

The snorkel is a restriction, so just as well to remove it. It's primary function is to silence induction noise.

Quote:
Originally Posted by _Josh View Post
Also it's to my understanding that to run with modified filters it's advised to use Kev mod (I am on an 04' XT), would I also need to make adjustments to the CO settings?
Yes, you will need a Kev mod (or Power Commander) to add fuel and compensate for the extra air and to maintain a suitable air/fuel ratio. You do not necessarily need to adjust the CO as this only affects throttle openings up to 2% and idle.