M7 turbo base settings

[Wheel House Motorsports]

After chasing our tails I have been helping my dad get his 05 OVS t-m7 ready to run.. it was acting up and no matter what box settings you had in it, nothing, just sucked and wouldnt rev up, sputtering, etc. messed with some electrical stuff, nothing still. dropped fuel pressure from 38# down to around 34# and pow, works a LOT better now, it will actually rev up on the stand.

I just was curious what people run for base fuel numbers and settings in the pure logic box.. as a good baseiline before we go out and play around to much for.

current numbers im using are as follows.

fuel 34 psi
green 1
yellow 1
red 1
green/blue 5.5
red/blue 6.5

how does it look?

 

[mt st helens]

Box numbers look good. But I have always had best luck with 42LB PSI for fuel.

 

[Wheel House Motorsports]

hmmm.. thats weird, might also be what the gauge is zero'd at.. I know changing elevations makes my boost gauge move up and down a few psi.. so that could change.. also unless calibrated against each other, they could easily be a few psi OFF>. i just know with everything i nthe box set at 1 except red/blue at the highest, it STILL poured fuel out the exhaust. dropped a few psi and it works darn good on the numbers in the box..

i was just curious. nice to see what others are doing.

 

[rmkid800]

I ran into the same problem with my M7 turbo. I had to set the fuel at around 30-35 lbs and then add fuel with the box from there. My number are be a bit different than yours but that is a good starting point. I would try that and tune the rest of it in at the elevation that you ride at.

 

[mt st helens]

I guess they are all not the same. 42 lb for five years now.

 

[shadow conspiracy]

those number are close to what OVS has posted for the M7. My brothers running similar numbers and fuel at 38psi

 

[JROD]

I'm at 38lbs with my sled. I'm surprised you're not running more fuel in the mid and on top.

 

[Wheel House Motorsports]

yeah... well, methinks its got other issues. lets just say the pistons now have an interesting rounded edge on the exhaust side... must be some sort of electrical demon in it as no matter what you do, it will not pull full rpm...7k or thereabouts no matter WHAT fuel pressure or box settings, unless you go up enough to drown it out... then you get less.. Its really hard to try and tune fuel when your having electrical gremlins.. a new set of pistons and some more playing and maybe we can get it to work out.. the thing is freakin nightmare.... note to self, dont buy used turbo 2 stroke from random people that arent the original owners.



anyone know how to test the stator output?? I think something is wrong with it..

 

[JROD]

sounds like you're running too high of boost for your fuel

 

[Wheel House Motorsports]

7 psi on mixed pump race.. not 100% sure what mix was. at 3500 feet?? not even getting more then 5 pounds out of it right now as its cutting out to much.. might be a little pushy with it.. but it wont burn it.. theres problems besides boost and fuel.. gonna probably pick up some av from the airport for playing these days.. just run straight av while tuning to prevent screwing around.

 

[JROD]

So you have a rounded edge on the exhaust side of the pistons and you're still running it????

 

[Wheel House Motorsports]

no... waiting on pistons with it torn down. im not that much of tard.. its not a yamaha, i gotta be nice to it, the motor doesn't like my tuning technique.

I ment right now in the context of the most recent running event. right before we brought it in and noticed the failure...

edit...

thanks tonysnoo for helping out with this... there apparently might be some issues with the bridge rectifier circuit wiring that is done right now that will ground out a bunch of the power from the stator.. thus the dull lights.. I will try to keep updating this thread to keep thoughs rolling.