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Has anyone done a dyno with MBRP against a stock exhaust. Wondering what actual hp gains if any or if the aftermarket exhaust may lose hp due to these engines needing backpressure to make power.

I have a rebuilt nytro engine with JE low compression pistons. What will the effects be of not putting this back into a boosted application and just running it stock??

Hey guys, what upgrades are required to the stock engine in order to run a MCXpress 240 kit at sea level?

stage one blower i am assuming as it is the same one that comes with the 185 kit running 11 lbs of boost and stock injectors with larger fuel pump

Hey guys wondering if anyone knows where to find the maps for the PC5 for the nytro. I am running 11 lbs of boost with the K&N filter as well as excell header and the MPI can. Already been mapped for everything except the header and can. Thanks

Hey guys wondering if anyone knows where to find the maps for the PC5 for the nytro. I am running 11 lbs of boost with the K&N filter as well as excell header and the MPI can. thanks

Thinking on doing this myself. Is there any links of a how to? Know mostly but just nice to have for reference if run into any issues

I do not have an A/F gauge so i am not sure to be honest. I was going to install one this season just havent gotten around to it yet. But according to guy who did work for me said i should be around 12.5...

Noone have any ideas?? In talkin with friends and family feel it is mostly likely a valve..

Hey guys need somewhere to start. Changed my boost to 6-7lbs to 11-12 lbs. When i did this i changed the pistons to the JE low compression pistons, added the larger fuel pump and went with the power commander V. Out for a ride yesterday and was on a straight away so was at WOT and out of no...

Going to change from 21-39 to 23-39 gearing.. will i need a different chain or will same chain work for both???

I am 195 do some ditch banging but not excessive. Run mostly groomed trails. I do ride hard but suspenstion shouldnt be taking the beating it does. I also have the MPI stage 2 supercharger.. Track has 4 studs per bar. So lotsa studs.

Hey guys i have been having problems steady with breaking suspension parts and things rubbing. had to replace front and back shock last year as well as from arm on suspension and two bars that run beside the back shock twice. The new front arm didnt last long before the two loops on top were...