Originally Posted by TiGeo
Originally Posted by OVERKILL
Originally Posted by TiGeo
I prefer my own performance data - 1/4 times in the real world. Plenty of folks have shown improvement with a K&N in conjunction with (important!) other intake modifications.
Yup, and there are plenty of setups where it shows no improvement or a CAI provides no benefit over a silencer delete on the stocker. I had a crazy WAI on my '87 Mustang and eventually swapped it back for a silencer deleted stock setup when I did my MAF conversion. The E/T and trap didn't change. What DID make a difference was an underdrive pulley setup and an electric fan.
I run a drop-in K&N with modifications to the stock closed intake system on my Golf. Proven #gains.
Yup, as I said in the other thread, it will depend on the design of the stock setup. I had no problem feeding a ~325HP (270 to the tires pig rich, later rectified with a more appropriate injector/MAF setup) 302 with the stock Ford airbox and a paper filter with the silencer deleted. It used a very large panel filter and the factory plumbing was all significantly larger than the 75mm throttle body I was using. I don't expect my 6.4L 392 is starving for air either and the airbox setup on the SRT's are all quite similar whether it is feeding the 475/485HP 392 or the 707HP hellkitty mill. I believe in the cars, the airbox is the same actually and the hellcat filter is just deeper IIRC.
On the Mustang, the purpose of going back to a stock airbox/plumbing from the WAI/CAI was to eliminate the consumption of hot engine bay air and instead have it breathing the much cooler air from inside the fender.
Probably my favourite stocker setup was the big dual setup on my M5. Obviously grossly oversized for the 400HP 5.0L V8 it was feeding, but it looked really neat having that symmetry to the engine bay.