RSpeed Intake Systems


[12/10/99] Reviewed by Ryan Moore -

Applicable to '90 - '97 1.8 liter

Superflow Intake Kit. Intake, bracket, and mounting bolts.

Instructions from R Speed were pretty good. Taking out the old "box" was simple and fast. Just be carefull when you remove the wiring harness from the air flow meter. Dont just yank on it or this will end up being a few 100$$ job. The bolts supplied for mounting the new bracket were to small. So after a trip to Home Depot and less than $2.00, I had the correct allen head bolts to install the bracket. After wiping the excess oil off the entire intake. They put a little to much oil on the filter to ship it. It comes in a plastic bag and its a good thing. The oil got all over the whole thing. But it cleans up pretty easily. After all was installed and hooked up It lookes really great. Looks are good but the sound.. I dont know. It kinda makes it sound like I have a vacuum leak or something at idle. But under driving rpm's you dont really notice it. But now the day after I installed it it seems that it is rubbing on the hood a little.

But just bend the mounting bracket and it seems ok now. All in all its a good deal. Make the engine compartment look a lot cleaner with the big bulky "box" out of there. Good product. The outer shell is painted plastic. I thought for $100 it would be metal. Owell it still looks good. The bolts they shipped were to small so i had to buy new ones. No big deal. Counting going out and getting new bolts install was about a little more than an hour.

Over 30 minutes to remove completely

[8/17/99] Reviewed by: Mark Chapoton -

Applicable to: '90 - '97 1.8 liter

This is a replacement air filter assembly for the factory box and snorkel. It attaches directly to the Air Sensor and is supported by a new aluminum brace. I went with the Blue body outer cone  to match the blue ignition wires. Inside the heat resistant plastic body is a funnel shapped  K&N filter with a cool chrome cover at the end.  This filter is cleanable with the usuall K&N filter cleaning kit.

The installation was a breeze and took about 20 minutes. My only concern was the four tiny screws that hold the body and filter to the mounting plate that attaches to the Air Sensor. I looked for loosening the first couple days and it seemed fine. After ten days, I looked again and three of the four screws were gone! I then went down to the local hardward store, got some new metric screws with little lock washers and some blue loctite. No movement of the screws since. Overall, my wife's 94 R White feels a bit faster under full throttle and the sound from the filter is  subtle but cool. The intake sets a couple inches from the heat shield but I have not seen any melting  of the plastic outer cone and we have had some hot days here.

For $90 bucks and shipping (took three weeks for UPS), you can't go wrong with this assembly. The looks and sound alone are worth the money and the 5HP estimated gain is just frosting on the cake.

Under 5 minutes to remove

Megaflow Carbon Fiber Intake

[1/24/2000] Reviewed by Patrick Batu -

Applicable to '99 + 1.8 liter

Carbon Fiber Intake Arm with a Monsterflow foam air filter. The unit replaces the stock system from the throttle body to the air box. The sensor box is then relocated to the end of the intake arm. The carbon fiber intake arm is light and strong. Intake arm diameter is approximately 2 3/4. Comes with an inlet for the crankcase hose and a hole for one sensor. Comes with all the hardware needed. Fitler comes preassembled, all you have to do is insert and tighten the screws. No instructrions were included except on how to assemble the filter.

Excellent craftsmanship. Easy to figure out if you have done an intake system replacement before (I did on my Honda Del Sol). Hardest part of the install was figuring out where the bracket attaches the intake head to the body for support. Installation took about 30 minutes and is easily reversible.

I have always had a K&N filter and seems to work better. I will try using my K&N filter off of my RS Akimoto to see if there is any difference.

Seems to have a bit of torque loss, but I'm not sure. Hoever, it does rev much quicker through the power band, especially from 3-6K rpm. Sounds only a bit louder than stock until WOT and between 4-6K.

Well, not sure if it is worth the $250, but it sure looks pretty. I went with this system because it is the only one that replaces the full itake piping, which is what I wanted to try out. All the other intake systems seem to only replace the airbox. My next task is to fabricate a heat shield and also try a K&N filter to see what difference if any between foam and mesh.

[12/12/99] Reviewed by David Michel - VWEFELIX@HOTMAIL.COM

Applicable to '99 + 1.8 liter

This is a completely new intake for the M2. It has a real carbon fiber intake tube that goes accross the front of the engine like the OEM. However this tube is bigger than the OEM and kind of looks like the intake tubes from a supercharger. At the end of the intake tube you attach your M.A.S. and the hook on the Megaflow filter. The filter is sort of a large cone shape foam and mesh filter, that can be cleaned and re-used. The whole package really cleans up the engine bay and places the filter behind the driver side headlight.

The sound of this thing is Great!!! The car sounds pretty normal at idle, but give it full throttle and the sound of rushing air followed buy a growl from the engine up to redline is heard. It even sounds better under overpasses or close to buildings. This new song my miata sings is not in any way a nusance, if I do not go more than half throttle the car pretty much sounds stock (although after getting this intake that rarely happens any more). As for performance gains the engine feels stronger bove 4-5000 Rpm and seems to pull a little harder, probably adding a few ponies to my car.

The whole package has been a beautiful addition to my 99' sport. Performance, sound and astetics were all improved in my opinion. The folks at Rspeed were great (as usual!) and helped me with putting on the intake. I started out looking at other intakes but with my sport package and the factory strut brace that I had, my options were limited. This intake fit without removing my brace, and I really like the look of the carbon fiber. If your looking for a new intake call Joe or Marlene at Rspeed and at least make this intake one of your options.

Under 30 minutes to remove completely


[8/28/99] Reviewed by: Brian Kiser -

Applicable to: '90 - '97 1.6 liter 1.8 liter

Product is a Ractive heat shield filter with reducer designed to replace the factory air box and air filter.

Purchased this filter in red in person from R Speed in Atlanta. Comes with a nicely polished aluminum bracket to hold air flow meter. Filter attached directly to the AFM. Directions are concise and everything fit perfectly. Removed old airbox and installed product in about 30 minutes with no problems.

Results: Car pulls harder from 4k on. Did not seem to lose any low-end torque, but even if I did, the sound alone is worth the price. Car now has a beautiful throaty growl under WOT. Colored heat shield looks great under the hood, but I have doubts about its actual effectiveness. This intake gives more of a focused, almost tuned sound compared to other cone filters I have heard. Definitely recommend ordering this intake from R-Speed, especially since it is on sale now!

Under 30 minutes to remove completely

R-Speed MonsterFlow Intake

[1/21/2003] Reviewed by: Phil Erb -

Applicable to: '99 + 1.8 liter

Bolt-on Intake crossover pipe, cool air box and cone filter

Installed in Stock 10 AE. I knew not to expect any real power enhancement, except maybe up in the higher rev band, and maybe some intake noise, but wasn't sure what to expect. With the help of one of the Windy City Miata Club members, and his heated garage, we used the MonsterFlow directions from Brian Goodwin's web site. The directions spelled out everything very nicely, along with hints and guides on what problems to look out for. Very helpful. The whole procedure took about 1 hour going slowly and re-reading the directions prior to each step (I believe in Measure twice, drill once). Over all it was easy, looks good with the cold air box, and looks good. ;-).

Now for the driving impressions. Everyone was right. Don't expect any huge power increase. I didn't really notice any loss of power down low, like some had complained, but also not much power increase up high either. What there is is a much thoatier growl when the throttle is wide open, especially above 4500 rpm or so. It was definatly alot louder, but I liked it. Not a rattle but nice and aggressive, and i didn't notice any noise change when I was not WOT. Now I know it didn't seem faster, but I did notice myself hitting the rev limiter, which I didn't do often before this modification. My guess is that it is a bit freer up high, so it gets to the rev limiter a bit faster than I am used to, saying that there is a bit more power, or that I just like to hear that intake noise.

Under 30 minutes to remove completely

[1/5/2002] Reviewed by: Paul -

Applicable to: '99 + 1.8 liter

Monsterflow induction kit for mk2 1.8L (UK MX5)

Im very happy, my car sounds much better at higher RPM's and seems a little more lively, im not convinced about the claimed 5-8HP gains, but i think its a good system and an ideal start to modding your engine.

Good instructions and a simple install even for a very amatuer mechanic like me.

Under 30 minutes to remove completely

[11/4/2001] Reviewed by: Shawn Hamilton -

Applicable to: '99 + 1.8 liter

Polished (stainless steel) air intake system with cone shaped washable filter

Removal of factory intake system was straight forward with no problems. The monsterflow intake system was easy to install approx. one half hour to forty five minutes with out any problems.

I was very happy with the product and the performance gains. The sound increased slightly at 4000 RPM ,along with a small increase in acceleration. It was definitely worth the purchase.

Under 30 minutes to remove completely

[2/11/2001] Reviewed by: Larry Sherman -

Applicable to: '99 + 1.8 liter

R-Speed Monster Flow Air Intake. System including cross tube, cone shaped intake filter (reusable), hookup pieces and clamps.

Spoke with RSpeed as I have a 2001 LS 1.8. They said that the current intake would fit the 2001. Originally, I wanted to purchase a JR Cold Air Induction, but it is not available for the 2001 yet. Installation was pretty straight forward, but I decided to let my mechanic put it on anyway. Overall I have been disappointed with the product. It definitely make the car sound louder. I had a K&N free flow air filter and a SS exhaust . The engine and exhaust sounded good before but is now louder and boggier sounding with the new intake on at low speeds. When the RPM's were high, it sounded ok. When you went past 1/2 throttle under low RPM's in 2nd or 3rd gear, it seemed as if the engine was pushing too mush air and it sounded as if it was "bogging" until your RPM's got up. I tightened all the clamps and this helped only a bit.

The drivability of the car went down. It seemed to loose torque, which is why I bought the product. I removed it and went back to the stock box with my K&N filter. The car sounds much better overall (maybe cause of my exhaust) and more importantly runs better and seems to have more low end torque. If you purchase this product for added HP, well don't. It makes claims of 6-8 HP but I never felt it. It seemed to actually slow my car down. I plan on getting a supercharger when it released for the 2001, but until then I'll stick with what I got. *This product made me re-think the reason purchased a Miata... the drivability. I got to see what the car might have been if Mazda didn't do a great job.*

Under 30 minutes to remove completely

[10/8/2000] Reviewed by Dr. H M Masek -

Applicable to '99 + 1.8 liter

intake system including cross tube, intake filter (reusable), hookup pieces and clamps; with availability of a nicely made and fitted heat shield.

well engineered and thought out with a needed instructions and parts included. went on quickly with simple hand tools. heat shield works well and offers significant protection from exhaust and underhood heat. filter cleanable and reusable. installation quick with no new holes needed. simple re routing of one wire set. whole thing in with less than 20 minutes work.

better than my previous K and N which gave slight hesitation at constant cruise and idle droop when coasting to a stop. new monster flow helps cure both of these with slight improvement in drivability, no idle droop when set to 850 rpm and .3 better to 60 mph with 1 mpg overall loss. ( sorry, no free lunch!) worth the bucks.

Under 5 minutes to remove

[10/10/2000] Reviewed by Norm De Angelis -

Applicable to '99 + 1.8 liter

A replacement intake runner and cone-shaped foam filter. The filter is wrapped inside six blades which in theory destroy air turbulence. Optional cold air box made of aluminum is available.

Have had this on for about three months now; trouble-free and has required no maintenance.

Enhances the general character of the engine; do not expect an improvement off the line for products like this. From 3,500 rpm upwards, there is definetly more power, and it runs freely to the redline. Noise is great at WOT, but may be a bit much for some. Replaced filter with K&N for a time, felt the MonsterFlow filter gave more power. The air box is well made, cuts down on noise, does help isolate some of the engine noise. Hard to imagine a better intake for M-2's for the money.

Under 30 minutes to remove completely

[8/21/2000] Reviewed by Norm De Angelis -

Applicable to '99 + 1.8 liter

A modified intake with a foam filter, turbulence-smoothing blades, and a shorter runner available in black plastic, stainless, or carbon fiber. Accessory kit includes an aluminum box to isolate the filter from hot engine air and collect colder air from behind headligh

Over 30 minutes to remove completely

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