RoadsterSport Helmholtz Exhausts!

1 - 2 of 2 Posts

Good-Win Racing

Registered

Joined Nov 18, 2008

1,386 Posts

Discussion Starter • #1 • Mar 29, 2018

Hi Guys

We now have unique Helmholtz chamber exhausts for all generations of Miata!

New RoadsterSport Helmholtz 99-05 Muffler Video!!

All the FUN...with NO DRONE.

Good-Win Racing

Registered

Joined Nov 18, 2008

1,386 Posts

Discussion Starter • #2 • May 17, 2018

Helmholtz setup for 90-97.

1 - 2 of 2 Posts

Recommended Reading

Mazdaspeed Miata muffler on a stock N/A Miata

Exhaust

I couldn't find a video of the MSM muffler on a fully stock naturally aspirated Miata so I made one Bone stock exhaust, just the MSM tip
- 1
- 1K
- Noah A · updated 1 mo ago
California Delete

Exhaust

A friend of mine just picked up a 1999 California car. It's now throwing a code suggesting the front catalytic converter is toast. We are up in Canada and (obviously) not subject to the California CARB stuff - how do we go about deleting all of it so that the car becomes a non-CARB spec? What...
- 11
- 655
- A
  autumnwalker · updated Jun 14, 2019
Raceland header gasket

Exhaust

What gasket do I use between the header and cat back? The stock exhaust has that ring gasket and the header does not it leaks really bad
- 2
- 2K
- donnyg20 · updated Mar 30, 2019
1.6 Exhaust manifold

Exhaust

Hi guys Are there any differences between different 1.6 NA exhaust manifolds? Ie are all manifolds (OEM, JDM, etc) made of the same metal and do they all have the same bore size? I plan on grinding/ removing the internal welds to increase flow. Let me break down the question...
- 6
- 507
- D
  Danny_Grist · updated Oct 25, 2018
Exhaust size

Exhaust

Hi guys. Does anyone know or have a formula for calculating the optimum exhaust size? I’m talking exhaust I.D Power gained and just the right back pressure. (There are arguments on whether back pressure is good or bad also) What size ID against the amount of horse power you’re chucking...
- 74
- 3K
- D
  Danny_Grist · updated Oct 22, 2018