07 Miata Racecar on MS3-Pro

[prof315]

Well I just finished stage 1 of an MS3-Pro install and dyno tune on an 07 Miata (NC) The car is in SCCA's Super Touring Lite class and will be competing in the 2016 season for a national championship. We aren't running sequentially yet but with untimed fueling and Wasted COP I was able to coax 15 more WHP out of the engine in a couple of hours than another tuner did in 4 days using the stock ECU! This was the customer's first experience with MS and needless to say he's pleased.

[prof315]

A quick update: after switching the harmonic balancer from the stock one with a 36-2-2-2 trigger pattern to a same year ( 2007) Mazdaspeed3 balancer with a 60-2 trigger we are now fully sequential. 5 of the 6 cam teeth were removed (too soon due to a misunderstanding of how the wheel decoder for 36-2-2-2 worked) for a dual wheel with missing tooth configuration. VVT has been turned on and is working so it will be back on the dyno this weekend.

[prof315]

VVT and variable intake control are certainly game changers! The re-tune picked up only 5 more peak whp but the average was up 25whp and we saw a gain of 40whp at 5500 RPMs!!!!!

And any one who thinks race motors with big duration cams can't benefit from an IAC....... how about a stable 1300 rpm hot idle with a 308* advertised duration cam in a 2.0L 4 banger!