Very interested in gains on a stock 2009 90cc.Will it be worth the $$$ or will this be better to wait for next season when we have motor upgrades? We race with the quadfathers sons and have let him outdo or get ahead lol. If anyone has any # on gains this would help a lot. As Marc knows after we last talked I let the quadfather get one up on me and now with winter arena cross and no time for major mods my son and myself need all the help we can get lol. My stock 90 and this 70 in the pics will practice together tomorrow so maybe we will be able to see if there are any gains from the intake. After last week Friday night the 90 was right behind the 70 and then Saturday the 70 was right behind the 90.