Thunder Products adjustable TPI "low boy" air valv

[Frostbite]

 

[RobX-1]

PB,
Maxximum Performance also sells the TPI valves for the RX-1. Here is a link to their site and the TPI valves:
http://www.maxxperf.com/TPI_Valve.htm

 

[Frostbite]

I found it. The place I was looking for is Wild Horse Performance at 208-852-3734. It's in the technical link at the bottom of the page on Thunder products web site. Thanks. Powder Blue

 

[jimmie d]

I have used D&D power breathers on my larger displacement cats for years. Very similar concept, D&D used 4 caps to cover whole dependent on temperature. Most Cat guys swear by them others claim a ripoff I would say well over half TCat and ZR900 use them. The key is what is the base line jetting the rest you can take care of with opening and closing dependent on outside temperature. I would be very interested if someone does have the baseline jetting set-up.

Jim

 

[RocklandRX1]

Powder Blue,

Keep me posted on your success with these. I have a set sitting in my garage since last winter. Of course...these will not be necessary if I add a turbo :lol: :shock:

 

[Frostbite]

RocklandRX1, HEY then you can send them my way. The guy from Idaho is supposed to call me back shortly. I'll post what he says. His wife says he's done just about anything you can do to an RX-1. We'll see PB

 

[jimmie d]

See if you can find out what the jetting is for flatlanders also initial and how many closed for colder.

Thanks

Jim

 

[Toolman]

Installed four valves in the ribs in front of each carb on lid. Noticed about 50-100 rpm increase in the 20 degree range at 1/2 open. At lower temps I had to close them or it seemed lean and fell off.

 

[Frostbite]

I wonder if the ATACC will compensate with these installed on an airbox? They will with K&Ns, so they should? I am still waiting on my call. I'll post findings. PB