NA w/VVT 2560 kraken
 

Parts list -

2005 JDM VVT stock internals
MS3 PNP Pro
2560
Kraken low mount and DP
3 inch exhaust to Ktuned muff
FlowForce 640s
DW200 FP
FlowForce LS coils
Squaretop
2.5 inch IC piping/Mishimoto Z line IC

10Lbs


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Boost controller?

Old style DIYautotune ebc. Made 205hp on gate

Curious to see what others think, but mid range torque seems kind of low.

What's your boost taper look like?

That's why I asked about boost control, I'd expect more torque at 3.5-4K. This plot looks a lot like my setup when I purposely made the boost rise with RPM to emulate a supercharger just for shits and giggle on the dyno.

https://cimg3.ibsrv.net/gimg/www.mia...f7507d5502.png

You will have to bear with me, I am new to tuning. I am assuming you are referring to the boost duty cycle? Mine is zeros across the board. The tuner said I was at 10lbs. I am assuming that was boost creep getting it to 10lbs.

I was wondering what your boost vs rpm curve would look like. I didn't know if you were adding boost duty to increase boost with RPM for a more linear power curve.

​​​​​​​Running on wastegate with a bit of boost creep might be the explanation of the lower mid range torque. You can improve your spool quite a bit with EBC.

I hadn't had a chance to look through the tune until today. I had imagined the tuner made use of the EBC during the second tuning session. Looks like I should get the car out to get some data logs. Ill take any help I can get! I was wondering about that mid range dip while at the tuners but was too excited to get the car on the street after being on jack stands for so long.

Typically I do a dyno pull at 0% DC, take the highest number (usually close to highest RPM too), and increase DC below that RPM so the boost curve stays as flat as possible. That way you're in a single VE row and it's easy to tune your fuel, and you can do partial throttle pulls to verify it stays flat. Unless you want a supercharger's dyno graph, then stick with your current tune.

dip could be a boost spike, or even the VVT needs tuning a bit.

I would just expect a bit more under 4K. The rest looks fine.

For reference, here are a couple of pulls on Virtual Dyno. One pull is at a flat 10ish PSI from ~3800 rpm all the way to RPM, the other I added a bit of boost up top tapering to ~12.5 psi by 6500 RPM. Both pulls are 3rd gear on the same stretch of road.

Stock 1.8 bottom end
Kraken Low Mount w/ 3in exhaust
EFR6258
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