Hi, I have been reading about it, and almost concord about the size of the track you are running in, small, medium or large.... but how to know this range...
Our track has the main straight about 60mts. and take about 18.5-19sec. to complete a Lap... how you measure the size?? to choose the correct combination of pipe and manifold... (ON ROAD)

thx fot the advise...

All engine manufacturers have their pipe selection for their engine models, and also a selection oh headers in different sizes. Basically they have pipes which enhance low end power (torque) and others which enhance high end power (high RPM), and different lenght headers (shorter= more RPM, Longer = more Torque). So if your track is tight and twisty you´ll probably best suited with a torquier pipe, and if it is a fast flowing track where you are at the gas most of the time, you are better with an RPM pipe...if it is a mixture between fast and tight and you´ll probably need the rpm pipe with a médium or long header.

By the way waht engine do you have? is it 1/10 or 1/8th On Road??

AFM

thx AFM, I am running 1/10 Serpent 748TQ, with the Novarossi .12 ISON...
And I was looking for the REDS Pipe 1974, and S Manifold... but may be is better Medium...

Reds is based on a Picco. Find a novarossi pipe

What these two guys said. You want to run the base pipe recommended by the manufacturer for your engine and then get 3 different header sizes so you can tune to the different tracks you go to. Get a short, medium and long header then go to the track and run a tank on each to see the difference in power, RPM's and fuel mileage. And don't try to mix another manufacturers pipe with your engine. They design their pipes around the engine design so mixing them creates tuning and power problems.

For your Noiva Ison .12 I would suggest http://www.novarossidirect.com/51615...60_p_2683.html

And get the short header
http://www.novarossidirect.com/41615_p_2640.html

And the medium header
http://www.novarossidirect.com/41616_p_2641.html

And the long header
http://www.novarossidirect.com/41617_p_2642.html

With all thse you are set for any track.

Regards
AFM

thank you !!!