Red is stock 1999 cam, blue is MSM cam (the BP5A). Direct swap, car didn't even come off the dyno.
Red is stock 1999 cam, blue is MSM cam (the BP5A). Direct swap, car didn't even come off the dyno.
Oh wow that's interesting. Normally you see gains in one area of the curve with a draw back in another. The American cam seems to have done better overall.
Don't tell MiataTurbo.
I wonder if that has something to do with overlap that could be dialed out with an adjustable cam gear.
We were doing straight A/B testing, minimizing variables. Both cams were at the stock timing.
Quick notice: the DIY Auto tune guys are treating me to some drag time tonight at Atlanta Drag way. Let's see some conrods!
I'm hoping for 11s.
The BP5A intake cam swap to see the gains requires that you swap the cam gear as well.
Gains aren't super large anyways... never could figure out why people wanted to go through the trouble. Especially on a solid lifter head where you get to deal with shims and all that noise.
Must have video! 
In reply to clintavo:
OK: http://youtu.be/XoGlYlKiFhA
We didn't make any runs, multiple crashes shut down the event.
Warren v wrote: In reply to clintavo: OK: http://youtu.be/XoGlYlKiFhA We didn't make any runs, multiple crashes shut down the event.
Thanks Warren! Perks of the job?
In reply to clintavo:
Actually tossed the keys for that one. The DIY guys deserved some fun.
I drove the 305 tune around their business park. Yup, it's fast. Pulls at the limit of traction all the way through third gear. Feels like someone strapped a JATO to the rollbar. It comes in a lot earlier than I expected, too. The DIY guys worked a lot on driveability, it's completely controllable.
The 260 tune feels good, too. It felt very easy to ride the limit, even on very cold tires. Haven't drive the 220 tune, yet.
Awesome... with that much power, any thoughts on a taller rear end?
Also, are the tunes unlocked and conservative enough to be disseminated?
https://www.youtube.com/watch?v=fMXO-Dt4UGA&feature=youtu.be
Had some fun today with my son shot gun.
Get some plates on that thing and stop by my house. I'm down to the rollerskate now.
Grant
Is there a dyno brand standard for st2? I ask due to the fact that the dynapack typically reads higher but the results can be made to match other dyno brands power measuring.
In reply to mrvwcastner:
Awesome!
mrvwcastner wrote: https://www.youtube.com/watch?v=fMXO-Dt4UGA&feature=youtu.be Had some fun today with my son shot gun.
Congrats on getting her running! Pretty fun, huh?
In reply to scareyourpassenger:
Dynojet. I have been told that the Dynapack is quite accurate, and the Dynajet usually reads a bit high. From what I can tell, the cheapest Dynajet, the 224x, is an inertia dyno. That will put us at a disadvantage, as the rotating mass in an Exocet is pretty light and will make the Dynajet think we have more horsepower than we actually do. The DIYAT guys were very aware of this as they tuned the car. Before we compete, we'll throw it on a Dynajet and see if we need to pull more boost/timing.
mrvwcastner wrote: https://www.youtube.com/watch?v=fMXO-Dt4UGA&feature=youtu.be Had some fun today with my son shot gun.
Were you able to get it on the road without the body? Where are you located?
Warren v wrote:mrvwcastner wrote: https://www.youtube.com/watch?v=fMXO-Dt4UGA&feature=youtu.be Had some fun today with my son shot gun.Congrats on getting her running! Pretty fun, huh? In reply to scareyourpassenger: Dynojet. I have been told that the Dynapack is quite accurate, and the Dynajet usually reads a bit high. From what I can tell, the cheapest Dynajet, the 224x, is an inertia dyno. That will put us at a disadvantage, as the rotating mass in an Exocet is pretty light and will make the Dynajet think we have more horsepower than we actually do. The DIYAT guys were very aware of this as they tuned the car. Before we compete, we'll throw it on a Dynajet and see if we need to pull more boost/timing.
Rule of thumb: if your car was tested on it, the dyno reads low. If someone else's car was tested on it, the dyno reads high 
The weight of the vehicle won't affect the reading from an inertial dyno. Rotating mass can affect it, but the overall mass won't. However, on the road a light car won't be able to load up the engine as much as a heavier one so you can cheat and throw more timing at it - basically, your safe tune will be more aggressive and thus make more power on the dyno.
clintavo wrote: In reply to mrvwcastner: Awesome!
Yet, I have seen and heard the opposite. The dynapack is as close as a car can get to an engine dyno number due to it being nearly inertia-less. Usual estimates are they read 8-10% more. Also why I like to use them and quote numbers:) They due simulate load better for a safe tune though:) Going cell by cell and nailing the air, fuel and spark is priceless.
Warren, can you reveal the major change to the frame?
That unsaid, it's not revolutionary. It's probably being made out to be bigger than it really is.
its been running for a while. Did a 2 day drag/drift/autocross then scare the public race it ran flawlessly (its a miata of course). This was first day with lights. Hung my miata plates & vins, still need to get a bit more legit.
The change is probably just a notch/revision for the V8/T56 guys.
Got a ton of work done this weekend! Now comes the real task of cleaning up my donor and performing all the maintenance/prep work.
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