a properly tuned length extractor does not compress the exhuast gas from 4 pipes into 1 pipe... the length of primary and secondary pipes are tuned so that the exhaust gas pulse can travel one by one into the pipes according to ur engine firing order...
Me and Monsterezza would like to ask you guys for opinion. What if we form our altezza club formally and start to have our own website, detailed database about our members from here. We can start to do gathering...