More Autocross Fun! Had our friends down from 949 Racing to play against, they had 3 drivers including multi-national champ Ken Montonishi. Always a great day of fun with our friends from 949 Racing, always interested to ride in their gorgeous ORANGE ND.....and I do wish Mazda would offer fun colors like this!
Orange1.jpg (111.84 KiB)
Their best time on street tires (RE71R) was 96 with Ken driving. I then ran 95, 95, 95...and another 95, on Rivals, three clean runs and one dirty. I think the Rivals gave me the edge because they have tested slightly faster than RE71R on our broken up surface and obviously they can run incredibly consistent times. I was top street tire time for the day, our 949 friends then loaded up a set of 245/40 HOOSIERS and nailed a nice 94. I liked the way their ND layed power with new OSGIKEN limited slip, we put one in our Fiat 124 and recently drove it at another event and jumping from the 949 ND to our ND it was clear their car put power down better where I was spinning a wheel, will add the OSGIKEN soon.
Great day of fun, BMW Club events are HIGHLY RECOMMENDED by me because the courses are longer and faster than SCCA events, lots of 3rd gear use as you can see in the video. You don't have to own a BMW for BMW CLUB events, you do need to join their owner's club and then you can run a Miata in X Class, Instructors like myself are separated into Gold Class.
Further thoughts on light flywheel.....I don't like it. In all prior generations of Miata the light flywheel is a top mod for me, Mazda left a lot of extra weight in the flywheel for those generations. But on the ND it seems this is another place they already trimmed the fat about as far as most will want it trimmed. For racing it is great, but for daily driving even just a few pounds less is annoying in the ND. So, will be keeping the ACT clutch in the car but likely going back to stock flywheel soon. Thus, for ND my suggestion is the light flywheel is for those racing only.
I just installed the max torque standard length headers and midpipe. I was an idiot and bought the SuperStreet twin tip about a month before I installed the rest of the exhaust. I really want to keep the twintip look but I really need to get a super-q. Will you be making a twin tip version of the super-q header muffler? I would be fine keeping the SuperStreet if it wasnt so ricey at around 5-6k rpm. Here is a link to a video of my RF with the full exhaust
Just a little update on my setup with the full exhaust and the SuperStreet Twin tip... After wrapping the standard length headers with DEI titanium wrap with a 50%overlap to reduce my engine bay Temps it also brought down the sound a tad bit and reduced the ricey sound where it's only really loud at about 5500 to the rev limiter.
Brian, do you have the tune results from 949's autocross car after Mat@OVTune dyno tuned it? They're running the LTH with 100 octane, and I was just curious how the curve looked and what numbers they were able to get.
2016 Meteor Gray M6 Club BBS/Brembo Progress springs, GWR long tube, GWR SS twin tip, Corksport CAI, OVTune on E85
They reported not being able to budge the results, regardless of octane still stuck about 160 on their dyno. They have already swapped headers a few times and now they are talking about putting in a fresh motor in the search for better results.
NathanD277 wrote:Wow. 160 on 100 octane sounds low for any header. Maybe there is something wrong with the motor. I'll keep watching.
They were up over 20 peak, as much as 30 hp at some points along the curve on their dyno with 91 octane tune. Odd they are making no more power with 100 octane, perhaps an engine wear issue with all the track miles they have on it. Their 91 octane chart is back on page 27 of this thread.
Final SCCA autocross run yesterday in our Good-Win Racing ND. The good is class win and fastest Miata time. The bad and the ugly is gave up about half a second when my big clumsy hands caught the wipers. Fun day, fast layout for SCCA with most of the time in 3rd gear, thanks to all who make these days at Qualcomm Stadium possible. Car was awesome, driver was just 'okay' but still managed the win.
And so begins the next stage of fun with our Race ND....and the Edelbrock Supercharger!
Install Edelbrock Kit #2.....on experimental built motor. This is to test BEYOND the kit, well beyond.
Not going to list the plan details here, just letting you guys peek at some of the pics and follow the process a bit as we slowly reveal the details. Normally this supercharger kit is installed on the motor as installed on the car. Because we are using a built motor, not entirely stock bits inside, this install gives us a unique view of the supercharger going on the motor piece by piece. I am almost hesitant to post these pics because I just know somebody will FAIL TO READ before they go posting at Miata.net their false conclusion that install of the Edelbrock supercharger kit requires motor removal from the car 'because that's what they saw' in thread at Good-Win Racing. So...let's be CLEAR....normal install of the supercharger is on motor as installed by the factory in the car!! The fact we have new motor going into this ND simply gives us the unique one-time opportunity here to show you views you will never otherwise get with the normal install.
First Picture is Intercooler manifold installed.
Kit includes a new 2.5 bar (21.7 PSI max boost) combo MAP/AIT sensor - the Bosch 0 261 230 042 sensor.