need more power - Yamaha YFZ450 Forum : YFZ450, YFZ450R, YFZ450X Forums

tjm688 · 11-20-2011, 04:24 PM

So I am pretty new to this forum and I am looking to do a few more upgrades to my yfz450 and need some suggestions. Currently I have a gytr exhaust, cam mod, and a 13:1 high compression piston. Looking probably to purchase either a ron woods intake or a fuel customs intake, but still haven't decided. I have also looked at port and polishing the head. What kind of increase can I expect from the intake or port and polish? Any suggestions on next upgrades that will make a difference without breaking the bank? Your help/suggestions are greatly appreciated.

robo · 11-20-2011, 04:52 PM

Fci, mmad ported head i bet you could see 5hp and you will definitely feel it in the upper rpms

yfzjoe · 11-20-2011, 05:15 PM

hi I live in Utah as well and mostly ride at Jericho (little sahara) and want to put in a 13:1 compression piston. Do you have to run high octane at our altitude? Thanks

tjm688 · 11-20-2011, 05:57 PM

Quote:

Originally Posted by yfzjoe

hi I live in Utah as well and mostly ride at Jericho (little sahara) and want to put in a 13:1 compression piston. Do you have to run high octane at our altitude? Thanks

I have heard so many different things. We initially just put in premium, but that was just while running it around where we live. Never rode a full day on just premium. I run a mix, half premium, half high octane. Haven't had any issues so far. You can buy high octane at the pump at Kellerstrass auto which is about 4800 S redwood rd in taylorsville. I believe it is about $8 a gallon.

tjm688 · 11-20-2011, 06:03 PM

Quote:

Originally Posted by robo

Fci, mmad ported head i bet you could see 5hp and you will definitely feel it in the upper rpms

That's awesome. What does it typically cost to do the ported head?

11-20-2011, 04:24 PM	#1 (permalink)
tjm688 Junior Member Join Date: Mar 2011 Location: Utah Posts: 4	need more power So I am pretty new to this forum and I am looking to do a few more upgrades to my yfz450 and need some suggestions. Currently I have a gytr exhaust, cam mod, and a 13:1 high compression piston. Looking probably to purchase either a ron woods intake or a fuel customs intake, but still haven't decided. I have also looked at port and polishing the head. What kind of increase can I expect from the intake or port and polish? Any suggestions on next upgrades that will make a difference without breaking the bank? Your help/suggestions are greatly appreciated.

11-20-2011, 04:52 PM	#2 (permalink)
robo Senior Member Join Date: Jul 2011 Posts: 386	Fci, mmad ported head i bet you could see 5hp and you will definitely feel it in the upper rpms __________________ 05 yfz450 Jb arms, fox floats, hiper tech 3's, lonestar axel, alba nerfs, asv levers, jb stem, precision clamps, precision stab., tag bumper, powermadds, blingstar grab bar, cv4 hoses, Fci, sparks exhaust, quadtech seat, red bull graphics, 15t renthal, 48-178-35 leak spring mod, you get the point

11-20-2011, 05:15 PM	#3 (permalink)
yfzjoe Member Join Date: Nov 2011 Posts: 77	hi I live in Utah as well and mostly ride at Jericho (little sahara) and want to put in a 13:1 compression piston. Do you have to run high octane at our altitude? Thanks

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