K&N X flow top filter?
- Thread starter malcons66
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jerry S
New Member
malcons66 said:
It should make absolutely ZERO difference. Here is my empirical evidence from my actual experience:
Dyno run number 1. Stock water pump, stock fuel pump, torker II intake, $25 paper air filter: 296 rwhp and 396 ft lbs torque.
Dyno run nubmer 2. Meziere electric water pump, holley blue electric fuel pump, RPM Air Gap intake, K&N X-Stream filter assembly ($130+): 300 rwhp and 400 ft lbs torque.
it will only make a difference if you have the car setup to take advantage of it. for instance ALL the engine air on my car goes through the hood scoop and into a sealed ram air box above the carburetor. i've got a 4" filter and flow through top. never done any back to back tests, but just from an airflow point of view (in this case) i think it helps some.
on your standard engine, the air filter is NOT the restriction. a 3" or 4" tall 14 inch air cleaner is a lot of surface area that will feed plently of motor.
jerry s... you numbers seem off to me. was this the same dyno? SAE corrected figures both days? i don't think you'd gain HP from an electric fuel pump (not much anyways), but an electric water pump should net you some. i'm willing to bet you've got a LOT more average power and torque than you did before, that is unless you didn't tune after to take advantage of the new parts.
on your standard engine, the air filter is NOT the restriction. a 3" or 4" tall 14 inch air cleaner is a lot of surface area that will feed plently of motor.
jerry s... you numbers seem off to me. was this the same dyno? SAE corrected figures both days? i don't think you'd gain HP from an electric fuel pump (not much anyways), but an electric water pump should net you some. i'm willing to bet you've got a LOT more average power and torque than you did before, that is unless you didn't tune after to take advantage of the new parts.
4MuscleMachines
Member
I use them always, they probably don't do anything unless you have a really low profile air filter. Mostly for looks but you never know if your 800hp N/A big block might respond to it.
malcons66 said:
wouldn't make a bit of difference. the point of nitrous is that it carrys its own oxygen with it, so that's where the power increase comes from.
jerry S
New Member
Bullitt said:
Same dyno. The consensus opinion here was that my car stopped making power at 5900 rpm because of fuel starvation. It was suggested that an electric fuel pump would cure this problem, which was not a problem at the end and made no difference in my numbers. The only real change is that it is louder than hell. The marketing hype about removing accessory drag by eliminating the water pump was just marketing hype. At the end of the day, I am prolly still better off as I won't overheat while stuck in traffic. My numbers are still pretty good if you consider that I have a C6 in there with a crappy torque converter. My 300 rwhp is about 400 hp at the fly. If I were to put a built T5 in there, I would see another 40+ hp at the rear wheels.
BTW, could you post a pic of your sealed ram air box?
thehueypilot
Active Member
Mustangs and Fast Ford magazine did a story on air filter/air cleaner combo's. The top filter did the worst out of all of them and they contributed that to a dirty air flow because of the two different directions of incoming air. I was interested in one until I saw that information and it makes sense.
jerry S
New Member
thehueypilot said:
I saw another article in which a shop tested a BB Chevy on an engine dyno with and without the XStream lid. The engine made about 5 more hp with it on.
12sec67
Active Member
jerry S said:
you have to many variables (changes) to say that the filter itself did nothing: manifold, water pump, fuel pump + filter unless you did the changes one by one and dyno'd after every swap you did.
jerry S
New Member
12sec67 said:
at most, it gave me 4 extra hp but between the filter and removing the accessory drag of the water pump, I consider it more likely that I picked up the extra hp with the electric pump. But the real deal was the intake.
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