but the throttle body end is still the same size as the standard one so the velocity will be exactly the same
With the stock intake arm, there are times when the vacuum is there in the intake manifold to draw air in, but there is not enough air flowing in the intake arm to satisfy the amount that is required.
The large volume and smooth curved design of the J's Racing intake tries to maintain the amount of air available at full throttle and high RPM. If you have an MAP sensor, you should get readings closer to atmospheric pressure with the J's racing when compared to the stock intake arm with a pod filter.
I've seen a clone J's racing intakes on several different cars now, not a single one of them made as much power as they did with a long ram intake, as tested on the same cars.
-It made less power on my car than the modified stock airbox.
I'd be interested in testing a genuine article on the dyno... They look nice and sound good, not a chance in hell I'd consider forking out for one without some back to back testing though.
I've seen a clone J's racing intakes on several different cars now, not a single one of them made as much power as they did with a long ram intake, as tested on the same cars.
-It made less power on my car than the modified stock airbox.
I'd be interested in testing a genuine article on the dyno... They look nice and sound good, not a chance in hell I'd consider forking out for one without some back to back testing though.
agreed
Been running few intake set up on my b series and run it on the dyno.
J's racing didnt make as much power compared to long ram intake or mugen intake.
Yes it has been proven that the AEM Cold Air intake makes more power than the J's Racing intake. However, the J's racing intake increases throttle response (and sounds sweet in vtec!).
I wish I had those dyno charts when they did a generic short ram vs J's vs AEM 3" Cold Air. The AEM made a few more peak WHP at the end of the rev range, but the J's had the best midrange.
Yes it has been proven that the AEM Cold Air intake makes more power than the J's Racing intake. However, the J's racing intake increases throttle response (and sounds sweet in vtec!).
I wish I had those dyno charts when they did a generic short ram vs J's vs AEM 3" Cold Air. The AEM made a few more peak WHP at the end of the rev range, but the J's had the best midrange.
The long ram intakes i've seen were louder than the j's racing style intakes too
I can't comment on throttle response as I've not driven a car with a J's racing intake bolted in, but if it's anything like any other shortram, then the throttle response effect is probably a by-product of the placebo effect
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Originally Posted by weeman
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