Customer Reviews
Really nicely designed product. I love that it draws air from the base of the cowl instead of under the hood. The instructions were pretty good, but the cruise control relocation didn't work out well. By using the existing hole per instructions the wiring was stretched to the limit. I ended up drilling a hole 1/2" closer to the front of the car to give it some slack. All in all it was a fairly easy install and I'm really happy with the job. Well worth the cost and effort.
The installation on my 05 NBwa a little complicated because I had to relocate the cruise control. FM provided a link to excellent photos and instruction so the install went smoothly. I have been driving with it for several days both in city and highway and hot and cool weather. The increased performance was more than I expected. The engine feels noticeablely stronger and revs quicker. The noise is noticeable but not annoying. All in all the car is more driveable in lower revs and really comes on in the higher rev range. The engine seems happy and so am I.
A good friend/ mechanic/miata owner and racer replaced my original NB1 muffler with a Cobalt and I’m very pleased with the sound. To me it improves exhaust note 30-40% over original without being over the top in your face. He let me borrow his Shinsen with CAI for a few days; never experienced intake sound and got hooked.
I wanted to improve intake sound with real lower air temps and possible performance gains decided on the Randall cowl. I installed everything myself pretty simple less than 90 minutes. Like the Cobalt muffler, intake sound is 30-40% louder/improved and complements the exhaust perfectly. Throttle response feels awesome especially above 3k rpm. Best affordable performance made yet. My friend will drive it this weekend at Lemons in NJ can’t wait to get his feedback.
Installed on an NB2 w/ cruise control
Install wasn’t difficult, but I did recently install a rollbar, so cutting sheet metal was easier this time around. I relocated the windshield washing hose to the left side; it’d probably look better on the right, but I couldn’t fit my drill bit on that side. FYI the 12mm or 15/32” isn’t a common bit so don’t assume you have it like I did.
Moving the cruise control actuator was a little hard with only one person, but in the end I got it on by threading the nut onto the bolt slightly and then sliding the actuator bracket in between (has an open side).
It sounds fantastic, especially under hard acceleration. Great throaty growl that had me wanting to hear it again and again. I can’t speak to HP results, but the car feels quicker.
Installation was very quick and straight forward. With the right tools even the cutting part can be done in a clean way. I really appreciate that the tubes are flexible. My intake box is slightly pushed off it's original position to prevent rubbing against my strut bar but silicone tubes being flexible just fitted anyway. I can't tell if I gained any extra HP but the engine feels happy. Now my next project is to relocate the washer bottle out of sight to the area under the left headlight - the air doesn't need to flow through there anymore. Maybe FM can do a kit for it in some day in the future?