A few updates, since our dyno plots are being discussed. We always do a baseline at 100% stock when possible. Always the same dyno. Always the same tire pressure. Always SAE corrected with same smoothing.
Blub was a healthy engine, made 172whp after three back to back pulls on CA91. ACE350 header made good power. Fitted a JDL header hoping for gains past 7200 and saw a mild improvement. No gain in peak power but less drop off after 7200. I scrutinized the datalogs and noticed a left over OEM control strategy that reduced power past 7200rpm. Suggested a small change, it worked. Now only minimal drop off on the top end. We sold our ACE350 header and stayed with the JDL.
As a tuner myself, I spent a lot of time looking at datalogs. I have tuned dozens of our MX5 street and multi championship winning race cars mostly on Megasquirt. Tuned our ND MX5 with Ecutek. We asked William to make many small changes to our maps to improve driveability, linearity and response. He was eager to work with us, trading logs back and forth. I never did any tuning on the 86, just looking at tables, data logs and driving. He tells me that most of those changes we requested became standard in all his 86 tunes. I imagine those are trade secrets now so I won't share any further detail. Too many other shops copying IP
I know for sure that other 86 tuners aren't doing End result from DT is a true motorsports level tune right out of the box. Really happy with how Blub is working.
Also, almost no difference between 4th and 5th gear pulls on a Dynojet if you let the dyno resync for gear ratio. Like 1-2whp which is within the "noise" of regular readings. We do our pulls in 4th.