davej
New member
Already posted this on ty4stroke but the more input the better... im stumped. I bought a 2009 nytro mtx with a mcx 270 kit on it this summer. Before i started working on it i ran it lots to make sure it was good and it made boost, went to WOT with no issues.
Now that i have it back together just in time for snow, im having issues.
The issue: starts up and idles fine but hits a wall at 4400ish rpm and sounds like a rev limiter/stutterbox. It doesnt matter if i hammer on it or slowly rev to that point, thats where it stops. After the revs come back down it struggles to idle then dies.
Fuel pump/filters are good, lots of flow to the injector rail.
Runs on all 3 cylinders (unplugged each coil while running and it ran bad when unplugged)
Fresh premium gasoline
TORS is bypassed
TPS reads 16-87
No codes
Recently changed cr9eix, they look a little black so i know its getting fuel.
Any idea what my issue is? Could it be the coils? Bad secondary injectors? some grounding or power issue with the mcx boost box? Someone recommended the fuel pump and starter relays but it starts fine and i know its getting fuel
Some help with this would be awesome. im stumped.
Now that i have it back together just in time for snow, im having issues.
The issue: starts up and idles fine but hits a wall at 4400ish rpm and sounds like a rev limiter/stutterbox. It doesnt matter if i hammer on it or slowly rev to that point, thats where it stops. After the revs come back down it struggles to idle then dies.
Fuel pump/filters are good, lots of flow to the injector rail.
Runs on all 3 cylinders (unplugged each coil while running and it ran bad when unplugged)
Fresh premium gasoline
TORS is bypassed
TPS reads 16-87
No codes
Recently changed cr9eix, they look a little black so i know its getting fuel.
Any idea what my issue is? Could it be the coils? Bad secondary injectors? some grounding or power issue with the mcx boost box? Someone recommended the fuel pump and starter relays but it starts fine and i know its getting fuel
Some help with this would be awesome. im stumped.
Are you sure you have the TORS bypassed? Sure sounds like a overly tight throttle cable and its setting off the TORS.