Nytro Mcxpress 270 max boost?

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DylanBoost

Free Member

Oct 2, 2014

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• Oct 14, 2014

• #1

I am building a Nytro with a mcx 270 kit (19) and i am a little confused on what the max boost i can run. I don't want to run anything but premium fuel (91) and i live in Winnipeg MB, Canada around 1100 feet. What is the max boost i can run with this kit on stock internals with the mcx head shim?

 

motojunkie101

MODERATOR: Premium Member

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Nov 26, 2007

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Sandpoint, Idaho

• Oct 14, 2014

• #2

Stock internals are safe until about 17lbs. After that you really should do some engine work.

 

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DylanBoost

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Oct 2, 2014

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• Oct 14, 2014

• #3

Thank you very much.

 

Tuesday

Well-known member

Premium Member

Nov 26, 2007

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Lacombe, Alberta

• Oct 14, 2014

• #4

Should be making 270 at 15 lbs at that altitude. 17lbs at higher elevation.

 

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boostedballz

Free Member

Dec 18, 2007

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• Oct 17, 2014

• #5

At that altitude on 91 octane you would want no more than 15-15.5 psi. Detonation will occur above that.

 

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summitrider1

Free Member

Nov 26, 2007

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Arvada, Colorado

• Oct 21, 2014

• #6

my 270 kit is hitting 21 psi. I am running 8000' and above. could i have a bad pressure sensor. its hitting 206 kpa and without the sled running it shows 55-60. i have read that it is set to automatically hit 210 kpa. has anyone else had this problem? can i get into the computer and change the max kpa?