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Yes. Highly recommended. If you can't stomach a tune at the moment, just go easy on it. No modifications necessary, pluck off MZR manifold, install onto FoST manifold. I will say that there was some slight issues getting the holes to line up for the MAP sensor on the FoST manifold, but it...

Interesting. A tried and true combination of the CX-7 rear end, speed6 drive train and speed3 suspension, but with some very meaningful parts added. Love the wheel speed trigger ring design. I was following your posts on CS a while ago when you had just started this up on your own car. I've...

It seems like some people have attempted ST swaps on the Miata forums, the second thread having some good information in there. Outside of that, I run a Focus ST intake manifold on my Speed3. While it's not a Miata, I may be able to offer some help as the MZR + FoST manifold is a combination I'm...

I apologize for the gravedigging on the post. This is a problem I had, and something I can provide insight to. My source for the information I'm about to parrot is from Bosch themselves, I called up their technical division myself just today to gather this information. The original part...

CorkSport throttle body failures are pretty common, which is why I ask. CorkSport quality has gone down a little bit in the past years, and for Mazdaspeeds in particular, their throttle bodies and their boost controllers. This is from my tuner though, do what you will with that information (the...

You can, though it definitely looks like your TB is the problem here without having a log even. Is this a CS TB?

I know it's been a little bit, but just an update for anyone interested in doing their own wiretucks, I did end up making those diagrams. Here's the thread for anyone interested: https://mazdaspeeds.org/index.php?threads/mzr-l3-vdt-coil-and-injector-harness-diagrams.16401/

Seems like someone else has had something similar before. From

P2088 tells me that whatever the wires were at originally were the correct polarity. You may just have a bad OCV itself.

If it dies immediately, I'm imagining that it's going to be a MAF issue, assuming that everything else is done correctly (i.e. no large vacuum leaks). If you start the car and immediately give it gas (blip the throttle just a little bit) then let it go, will it idle on its own? If so, it's...

No damage will have occurred, unless there was preexisting damage to the system. VVT is a sprung system, oil isn’t there to lubricate the system like the rest of the engine. Just flip the polarity so that it’s correct and you’ll be set. There’s no concern of valves and pistons colliding either...

The OCV is essentially a solenoid. Some solenoids when wired incorrectly will still function, but the magnetic fields will collapse 180 degrees out of phase (so when it's supposed to be closed, it's actually open, and vice versa). Others will just not work at all, if there's a diode inline, but...

Have you taken a look at Enkei RPF1s?

Good evening (or whatever time it is) to all. Over the last few weeks I've been taking on a lot more projects that I've been meaning to get to. For a while I was working on some, but then I had to move across the country, so a lot of them got postponed, one of which happens to be making wiring...

It's a work in progress, the final versions will have orientations. I don't intend for that wiring diagram to be the final product; I actually intend on making a full thread about it when I finish them up (with actual wiring diagrams, not some MS paint thing). I appreciate it though.

Harnessed perf hasn't actually released any of their wire tucks, you can't buy them. Little teaser, but I'm actually working on pinning out the harnesses to make wire tucks for the Mazdaspeed platform (and publishing them so anyone can make them).

Recently I've been getting some very high knock retard values, upwards of 7 and 8 degrees. This development is a few days old, and I really can't reproduce it at all. It happens seemingly randomly (so it was a pain to even get a log for, but after trying for a few days, I did get it). Just...

Depends on year, for some of them. Currently 2.3L EcoBoosts use a forged steel crank like Mazdaspeed. 2.0L and 1.6L EcoBoosts use cast iron as far as I could tell from my research. As for Duratecs, even though you didn't ask about them, they're cast iron. For keying, the real problem is the...

You could, yes, but there's a variety of reasons to get another crank instead of machining, a large factor being cost and another being convenience, as well as avoiding machining wait times. I was on a time crunch, and already buying Mountune products at the time. I had less than 2 weeks to put...

They were just used as an example of a company/business that works on both, I've never personally used them personally (as previously stated I use Mountune for my rotating assembly). For the thread, what would you suggest that fits that bill (companies that key both EcoBoost and Mazdaspeed...