Dec. 4, 2011 4:00 p.m.

During the process of changing the timing belt on my 91 miata, the plastic intake tube started to crack around the acordian section. I have megasquirt up and running in the car currently with the factory air flow meter. Looking to get rid of the afm and rig up a cone filter. What options are out there for replacing the tube? I've thought of using universal air intake parts, but for those in the know is there an aftermarket solution out there for the air intake tube that is a known commodity?

Hungary Bill New Reader
Dec. 4, 2011 5:12 p.m.

Gsxr Individual throttle bodies a la Tanner?

Dec. 4, 2011 5:33 p.m.

Duct tape has kept more of those tubes on the road than I should probably admit.

Xceler8x SuperDork
Dec. 4, 2011 7:08 p.m.

You can get rid of the MAF if you go with an Air Intake Temp sensor. Most folks who go that route also get a wide band as they then have to tune megasquirt. They utilize the wide band for tuning as it gives more info and a very good tune.

Keith SuperDork
Dec. 4, 2011 11:34 p.m.

Tubes are easy. Either use a flexible hose (like brake duct hose, not dryer ducting) or build something out of steel or aluminum. Don't try to make it difficult and it won't be. Be aware that the length can have an effect on power output.

Those weren't GSX throttle bodies on the Seven chassis in that picture. They were TWM units built specifically for the Miata. Still have 'em sitting on the shelf at home. In the meantime, both the Seven and the Targa Miata picked up throttle bodies along with more horsepowers and a lot more intake noise.

Hungary Bill New Reader
Dec. 5, 2011 3:41 a.m.
Keith wrote: Those weren't GSX throttle bodies on the Seven chassis in that picture.

Blast. I guess I just got my hopes up because I've been wanting to adapt those throttle bodies to something they weren't originally installed on...

You'll need to log in to post.

Also on Grassroots Motorsports

First Drive: Turbo ND MX-5

2 days ago in News

We hit the track with Flyin' Miata's latest power adder.

This Weekend at the Mitty: The Ultimate Auto Festival

2 days ago in News

Gates open this Friday for the Classic Motorsports Mitty at Road Atlanta.

ND Miata Turbo Kits Now Available!

3 days ago in News

Add 70 horsepower and 70 ft.-lbs!

What's the Plan, Man?

4 days ago in Articles

Thoughts on our racing plan for the year.

Meet the Rebels Who Started the Cannonball Run

5 days ago in News

Relive those desperado days through movie excerpts, and hear the real facts and wild stories from the legends themselves.

Up for Auction: All of Level 5 Motorsports's Hardware

5 days ago in News

It's a pro race team part out.

Can You Really Live With a Low-Buck Porsche 911?

5 days ago in News

For the past two years, on of our forum regulars has been chronicling his life with a Porsche 996.

Project Turbo Miata: Fire Fighting

5 days ago in Project Cars

We transfer the fire system to our new Miata.

Reader's Ride of the Week: Autocross Abomination

1 week ago in News

Classic British styling with a rotary engine?


1 week ago in Articles

If you’re going to host the search for the ultimate street car, perhaps you should drive one yourself.

Chris Albin’s Flying VW Golf: What Really Happened?

1 week ago in News

What really happened to send Chris Albin's VW Golf flying?

Drive Cars From the Lane Motor Museum Collection

1 week ago in News

Love older, maybe slightly weirder cars? This event is for you.


Grassroots Motorsports Magazine

Subscribe Today

Also get your instant access to the digital edition of Grassroots Motorsports Magazine!

Learn More