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jgreene0717 · 03-28-2011, 10:45 AM

I installed and S@B intake kit on my old NNBS 2007 5.3 truck. It lost power in the lower rpm ranges but did feel a little stronger in the upper rpm's above 4000. I pulled mine off and put the factory back on. To prove it was just not me I went to the drag strip and did a little testing. The 60 ft', 1/8 mile, and quarter times where all slower but the trap speed at end of track was about a 1/2 mile faster so it did increase horsepower just lost power down low. I had a handheld programmer so a custom tune may help out with CAI loosing power down low. What i did was just install a K&N filter and modified the air box to get a little more air in. If you go to the K&N website and look at the dyno they do not show power below 2600 rpm and I think that is where the losses are. This is just my 2 cents so someone else may have a better review on another unit.

03-28-2011, 10:45 AM	#2
jgreene0717 Jason Join Date: Sep 2008 Location: Wetumpka, AL Posts: 152	Re: K&N CAI... anyone install one yet? I installed and S@B intake kit on my old NNBS 2007 5.3 truck. It lost power in the lower rpm ranges but did feel a little stronger in the upper rpm's above 4000. I pulled mine off and put the factory back on. To prove it was just not me I went to the drag strip and did a little testing. The 60 ft', 1/8 mile, and quarter times where all slower but the trap speed at end of track was about a 1/2 mile faster so it did increase horsepower just lost power down low. I had a handheld programmer so a custom tune may help out with CAI loosing power down low. What i did was just install a K&N filter and modified the air box to get a little more air in. If you go to the K&N website and look at the dyno they do not show power below 2600 rpm and I think that is where the losses are. This is just my 2 cents so someone else may have a better review on another unit.