Cold air intakes Reply #15 – June 27, 2014, 10:45:26 PM Either way, I doubt I'd lose, if any, a ton of power, and I do want the engine to POP when I open the hood. I have my own vision that must see reality. Quote Selected
Cold air intakes Reply #16 – June 27, 2014, 11:51:31 PM FWIW -- I'm swapping back to the stock airbox in my car. Gonna run it with the 73 mm MAF I currently have and am looking for a nice smooth plastic pipe to go from the MAF up to the throttle body. The airbox is sitting here waiting for my days off to install it and my new alternator. It'll be housing a Motorcraft air filter.Interesting read here:http://www.nicoclub.com/archives/kn-vs-oem-filter.htmlAlso:http://www.svtperformance.com/forums/showthread.php?857223-SVTPerformance-2012-GT-K-amp-N-Replacement-Filter-Test Quote Selected
Cold air intakes Reply #17 – June 28, 2014, 12:13:09 AM This is all the cold air induction you need: the stock airbox. If it works on my car it will certainly work fine for a stock 5.0 SO or 5.0 HO. Just remove the silencer in the fender and you're good to go. Quote Selected
Cold air intakes Reply #18 – July 10, 2014, 05:29:46 PM Quote 35 wheel hp gain from a cold air intake in my opinion is a stretch at best, Personally i have not got that type of increase using my mustang. And we have actually tested it on the mustang with a net reduction in hp rather than an increase. The higher head as i explained pulled out timing and a substantial amount of timing at that. Tom, to be fair my example was on a 4.6 3v and included a dyno tune. For a 5.0 windsor; yeah not gonna happen. Change of plans on me fox...... Gonna run a new C&L pipe with a new 76mm.... Stock box just like Lou.... Could not find a plastic inlet that I liked.....Next month I'm swapping the 70mm TB and EGR spacer for 75mm units. These will match the opening on my intake manifold. Clean flow. Quote Selected
Cold air intakes Reply #19 – July 11, 2014, 09:45:10 AM The cold air kit that I have on my Coupe relocated the air filter to the inner fender area behind the passenger headlight. It sounds kinda funky and I do not like it but it gave me more room under the hood getting rid of the factory air box which I needed. I am still contemplating reworking the plumbing from the MAF to the TB as I do not like how the BBK kit installed, no smooth transitions from the metal tubes to the MAF and TB. If you run the calcs the factory shape filter panel it has 85 square inches which is not adequate for my 331 stroker as it requires about 98 sq inches. A 0.030 over 351 requires spinning up to 6,200 rpm needs about 107 sq inches so the flat filter panel really should not be used if you want maximum performance. Anyhow, that is what I came up with using a couple of manufacturer's online calculators and it is how I sized the filters on bot the cars.Darren Quote Selected
Cold air intakes Reply #20 – July 11, 2014, 10:54:24 AM The stock box is fine for a 302-306 that's not revving to the moon. Plenty of Mustang guys have been in the 12s at 105+mph with the stock box. Once you get bigger than a 302 and/or have a high revving engine you need a different intake setup. Probably an Anderson Power Pipe or similar. Quote Selected
Cold air intakes Reply #21 – July 14, 2014, 01:56:51 PM Found those formulas..... QuoteSquare inches of filter required for a motor = CID x Maximum RPM / 20839I upped the displacement to 306 and used 6300 for a redline so as to have a VERY small margin for error. I'm 302 and 6200 respectively.92.5 square inches.... Lets consider now that a 70 mm TB equates to 2.75 inches. So the area of a 70mm opening converted is roughly 24 square inches. Is a filtering element THAT restrictive? Quote Selected
Cold air intakes Reply #22 – July 14, 2014, 03:56:05 PM If the manufacturer of an air filter element is providing the equations I tend to agree with their engineers and not second guess them. The filter element is definitely a restriction which is by design although they try and make it as little of a restriction as possible.Guys have been into the 12's with the stock box but usually that is a requirement of the class they are racing in like street stock or something along those lines. In some cases an air filter of larger cross sectional area would allow the car to breath easier (less restriction) and thus make more HP but that is a whole other can of worms as I am not privy to the cars you are speaking of with regards to the ones running in the 12's. This is especially true of forced induction cars as they can create more flow across a given cross sectional area by creating a higher differential pressure on the suction side of the compressor so a smaller element will be more efficient.Anyhow, the info is there use it as you so choose.Darren Quote Selected
Cold air intakes Reply #23 – July 14, 2014, 11:05:19 PM I'm in the 12's now. The cone filter I run right now is rather large.I appreciate the insight. More research on my end is apparently in order. Quote Selected
Cold air intakes Reply #24 – July 15, 2014, 12:59:18 AM In my case I have a 306 that makes power to 5500rpm. I need about an 81 square inch filter. Since the stock box/filter is 85 square inches running it is not hurting my combo. It would be a restriction if I was spinning much past 6000rpm however. Quote Selected
Cold air intakes Reply #25 – July 15, 2014, 09:42:07 AM Looking at some of these numbers it would appear that many of the cone type filters that come with CAI setups might not cut it either. Look at the unit from SR performance on American Muscle. Looks rather tiny. My current one will support about 1200 CFM, but its under hood. I suppose I could run an elbow through the fender well that has a downturn on it and see if the monster I have will fit..... Either that or leave it under the hood and grab the corresponding metering tube for the larger MAF..... Quote Selected
Cold air intakes Reply #26 – July 15, 2014, 03:56:20 PM FYI-- YOU CAN USE MAC MAF CALIBRATION TUBES IN C&L METERS. They have a chart for them on their page.Linky: http://shop.macperformance.com/MAC-Ford-Mustang-Calibration-Tube-for-MAC-Mass-Air-Meters-Calibration-Tubes.htm Quote Selected
Cold air intakes Reply #27 – July 15, 2014, 05:33:46 PM I have one of these filters sitting around in the garage: http://www.summitracing.com/parts/mch-1411/overview/Next time I'm at the track I may swap it on and see if it makes a difference vs the stock box. Quote Selected
Cold air intakes Reply #28 – July 15, 2014, 06:11:19 PM I'd throw it on and put the march air box around it and cut a gigantic hole in the fender and the box. No snorkel tube.FWIW -- Seeing as I will probably keep the underhood filter and make a heat shield for it, I ordered MAC's CT5 tube which is a direct substitute for the C&L black p/n 105. According to the sheet that came with the 76mm MAF and elbow, the 102/blue is for a stock airbox/fenderwell and the 105 is for a filter at the end of the MAF. I wonder if they are sizing it differently for the lack of a bend or the fact that the underhood cone filter sees prop wash from the fan..... From what I understand the stock air box acts as a bend in the sytem just like a fenderwell intake does. Interestingly enough, the only size injectors they make this distinction for are 19's and 24's..... Quote Selected
Cold air intakes Reply #29 – July 15, 2014, 11:43:55 PM Quote from: V8Demon;435990I'd throw it on and put the march air box around it and cut a gigantic hole in the fender and the box. No snorkel tube.I would except I don't like the idea of cutting holes in the fender. Then it won't look stock . Quote Selected
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