Very roughly, one turn of our MBC is 1 psi on an MSM with a stock actuator.
Keith Tanner Flyin' Miata [EMAIL PROTECTED] http://www.flyinmiata.com 1-800-FLY-MX5s (orders) 1-970-464-5600 (tech) 2008 FM Open House: August 14-17 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Larry Alster > Sent: Saturday, July 19, 2008 5:38 PM > To: 'Lloyd Broussard'; 'Miatapower' > Subject: RE: Bucking after FM intake and O2 signal modifier install > > We're talking MS here and the thing does have a built in > boost cut. Turn it down a bit. No telling how many turns > equals what. Just turn 1/2 turn at a time go out and run in > 5th or 6th gear at 3k and slap the throttle to the floor. By > 4k you'll have full boost. > > The AIT sensor is in the TB elbow and the wires were a > problem on some cars when they were stretched tightly to the > OEM TB elbow and rubbed through and shorted. Installing the > FM kit takes away the strain and I bet Lloyd would have seen > bare wires. > > The 60 psi boost/no vacuum gauge belongs on a Diesel not a MSM :) > > > > > Larry > > White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey > B 1992 Sunburst Yellow #99 SM2L JR Supercharger > Whooosh 2004 Titanium Mazdaspeed MX-5 > > LowCountry Miata http://www.lowcountrymiataclub.net > Masters Miata > RAGS 074 > > > -----Original Message----- > From: Lloyd Broussard [mailto:[EMAIL PROTECTED] > Sent: Saturday, July 19, 2008 4:01 PM > To: Larry Alster; 'Miatapower' > Subject: RE: Bucking after FM intake and O2 signal modifier install > > I'll have him turn down the boost controller and see what > happens. The boost cut was one of the ides that I had in mind. > > I'm still waiting to hear from him about the CEL? Hopefully > it will shed some light on the situation. > > Unfortunately the boost gauge that's in the car is a cheap-o > unit that shows no vacuum and goes up to 60psi. So it was > pretty hard dialing in it perfectly. That's why I left it at > 10, as I was getting that result consistently. Any idea how > much boost is add/subtracted from a full turn? > And I told him to spend a few extra dollars and get a good > vacuum/boost gauge. > > The O2 clamp is a brand new 2 wire setup. There is only the > pot screw for adjustments, there's no vacuum switch. I don't > really think the O2 clamp is the cause of the issue, I > mentioned it since it was installed at the same time. > > Thanks again! > > -----Original Message----- > From: Larry Alster [mailto:[EMAIL PROTECTED] > Sent: Saturday, July 19, 2008 2:15 PM > To: 'Lloyd Broussard'; 'Miatapower' > Subject: RE: Bucking after FM intake and O2 signal modifier install > > > Your hitting the boost cut which happens when the car is at > WOT in higher gears and makes more than about 10.5 psi boost. > > You need to set the boost controller lower since during the > day it's going to make less boost than when it's cooler at night. > > My rules is to set the boost to 9-9.5 psi boost in the warm weather. > > As for the CEL???? > > As for the O2 sensor, if you have the 4 wire unit you need to > not only set the pot but set the vacuum switch. It is in the > directions. > > http://www.flyinmiata.com/support/instructions/ecu/O2%20pressu re%20switch.pd > f > > Step 5 > > If you have the newer 2 wire unit I think it is adjustment free. > > > > Larry > > White Knight 1991 Crystal White #99 CSP Silver Bullet 1992 Silverstone #17 SM2 FM I+ Turbo Honey > B 1992 Sunburst Yellow #99 SM2L JR Supercharger > Whooosh 2004 Titanium Mazdaspeed MX-5 > > LowCountry Miata http://www.lowcountrymiataclub.net > Masters Miata > RAGS 074 > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Lloyd > Broussard > Sent: Saturday, July 19, 2008 2:55 PM > To: Miatapower > Subject: Bucking after FM intake and O2 signal modifier install > > Yesterday, I helped install the throttle body tube and GFB > blow off valve from the FM intake set up along with a O2 > signal modifier on a '05 MSM w/38K miles. The intake side of > the FM intake was installed last weekend. The car is stock > besides the boost gauge that's inside the car. > > We dialed the boost controller to 10lbs, and it seemed that > the car was happy. > > Last night the owner got a check engine light and now the car > is bucking at WOT. I haven't had a chance to put my hands on > the car to check it over. The owner told me that the bucking > happens only at WOT, not at the transition into boost. So I'm > thinking the O2 clamp may be working fine. He says it feels > like the car is hitting the fuel redline cut off, but he's > not at red line. > > We didn't adjust the pot on the O2 clamp, since there isn't > anything about doing so in the instructions, and I believe > it's preset by FM prior to shipping. > > The owner does not have a scan gauge, so he's going to swing > by AutoZone so they can pull the code. That will at least > give us a starting place. > > Any ideas or places to start looking? > > Thanks for the help, > Lloyd > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
