NB2 VICS + MS3
 

N/A 05 NB2 130k miles, good compression. RB header, Roadstersport 3 exhaust. MAF removed.
Torquey, but not a lot of top end.
Should I be seeing more? Tuner said that this was about as much as the engine could make.
120 peak at the wheels, would be 138 at the crank. I spent all the money to make stock power?:crx:

Car was dynod at 147Whp at another dyno pre-mods, so I'm going to go back there to see if I've gained or lost relative to that dyno's 147whp.
https://cimg4.ibsrv.net/gimg/www.mia...806588604a.jpg

147 seems optimistic, 120 seems low. You can not compare dyno to dyno numbers when 5-10 hp is considered a major gain/loss unless you have extensive experience at both dynos.

I figured 147 was high on a stock ecu. Hence why I want to go back to that dyno and see if I gained/lost power in relation to its 147.

That TQ shape makes me curious about the VVT table. Title says VICS, where is the switch point?

I’ll make a build Thread and link it here. I’ll post my tables.

The VICS switch point is 4300. It’s a NB1 intake manifold on an NB2.

I saw the VVT table in the other thread, do the logs say your VVT is at target?

Yes, +- .1

Well, the shape of that curve looks funky to me. An NA VVT should have a plateau to 5700 or 6000, yours crashes at 5250 or so. This is what I would expect the shape to be.

Mistimed cams can look like this. If you drop the VVT to 0 degrees after 4500 and autotune fuel, does VE increase up there?

Seems like a silly thing to mention, but back up the upne prior to making changes.

I was expecting a plateau as well. The stock dyno (my car), had it. (I have to find it’s graph).
As far as I know, my cam timing has not changed. I will pull my VC and check the cam gear alignment. Would that help?

Certainly could, have you done a timing belt recently?

Nope. I did a valve cover gasket about 4K miles ago, and timing belt looked brand new. It’s possible the belt had just been done for it’s 100k mile interval.

https://www.miataturbo.net/build-threads-57/nordic-fjord-spice-sparkle-nb2-102378/

Build Thread link to help consolidate.