Cold Air intake
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Yes, I actually did put one on my 5.9 Dak back in '15.
If it did run better, it certainly wasn't slap-in -the-face-better.
Don't hold me to this because I am going strictly from a somewhat flawed memory, but I believe that K&N was claiming 15 more HP at 5,000 RPMs.
It does sound good, though.
Let me take a look on another forum & find a thread where a couple of members were explaining why a CAI would have little or no effect on a MAP engine. I cannot tell you for certain that their explanations are right or wrong.
If it did run better, it certainly wasn't slap-in -the-face-better.
Don't hold me to this because I am going strictly from a somewhat flawed memory, but I believe that K&N was claiming 15 more HP at 5,000 RPMs.
It does sound good, though.
Let me take a look on another forum & find a thread where a couple of members were explaining why a CAI would have little or no effect on a MAP engine. I cannot tell you for certain that their explanations are right or wrong.
Ah, here it is:
www.dakotaforumz.com
Post #4 is about where I am guilty of hijacking it & turning it into a CAI discussion. (however, I felt that OP was satisfied with the answer he had to his OP & I felt my CAI questions were relevant to the OP).
318 question.
Ok, so this isnt exactly Dakota related, but my question is in regards to the 318. Would there be any benefit to swapping the 2 injectors on my 91 318TBI to some for a 360? Also, would a 360 throttle body fit the intake and line up? On my 03 Dakota with the 3.9, im running a throttle body...
www.dakotaforumz.com
Post #4 is about where I am guilty of hijacking it & turning it into a CAI discussion. (however, I felt that OP was satisfied with the answer he had to his OP & I felt my CAI questions were relevant to the OP).
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42 Posts
I had one on my 5.9 Durango. I took it off. The increase in power was negligible, however it was certainly louder at WOT around 2500+ RPM. Ive heard that the filtration is worse with the CAI as well.
If you plan to do any offroading the factory air box is much better the Durango gulped water a few times on crossings where it would not with the factory air box
I have the K&N on my '03 4.7. It's a bit more powerful, not a lot, certainly noisier, and I think my gas mileage actually decreased. I may take it off.
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779 Posts
I've had one for more than 15 years. i would've switched back to the factory box long ago, but tossed it when i moved. I don't think i got any gains from the CAI. I did notice considerable gains when switching to a port throttle body and 1.7 Roller Rockers.
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42 Posts
Coming back to this... I think as dave2003 said above if you were to build an performance engine that was moving a lot of air it would have some improvements
Copied & pasted from another thread on another forum:
"Our engine's PCM does not use a MAF sensor, so doesn't know how much air is flowing into the engine (directly). It uses the MAP sensor (vacuum) and IAT sensor to calculate how much air is flowing and bases injector pulse on that amount."
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