I haven't driven the car much, just from the shop to home. It does feel much peppier though. I have a trackday this Saturday; I know it'll be good.

I have a wastegate & capped it to 13 psi. The pulley does make much more boost (either 18 or 22 psi, don't remember off-hand)

He did increase the duty cycle, but that would increase the peak overall boost and still drift down after hitting that peak. I think the only approach is to set boost control by RPM. Unfortunately the Flashpro only has 1000 RPM increments for boost control. So it would have to extrapolate from 7000 to 8000RPM and 8k to 9k.

 

The Blacktrax DynaPack doesn't read high. For reference, my stock baseline
practically had identical numbers in comparison to another local shop's (DSR) Dynojet.

 

Final minor update. Went back to the dyno to get the last ~2000 RPM tuned with the new boost control duty cycle settings. Here's a before/after comparison using the MAC boost controller. The baseline pull is using the same setup as my first post where the HP flat-lined and TQ dropped (wastegate using 11.6 lb spring with no MAC). Not sure why it dint show a flat line here like on the other dyno, but I'll account that to different equipment between the two dynapacks.




During the final tuning stages, we were messing around with the duty cycle on the MAC. Upping it by 1 psi gained peak HP to 385whp. The car was not fully tuned yet at the higher duty cycle, which is why there's some sinusoidal resonance type stuff showing on the HP plot.




We did get some sputtering at high RPMs, which sounds like spark blow-out, when setting the duty cycle to the higher number (achieving ~14 PSI). I'm thinking about getting a boost-a-spark, increasing my plug gap back to default and trying again. I'm running the 2778 plugs gapped at 0.028"

 

Sounds like he doesnt have a ton of experience w the software if he doesnt know how to modulate the boost levels according to RPMs. Further you can certainly change the RPM Index. So you can increase the resolution around certain RPM points. the boost curve is looking better, but you should be able to dial in exactly how you want it. As far as the misfire, dont go out and get a boost a spark, lower plug gap to like .025. that should help unless you have a worn out coil pack or two.

good luck

 

My initial statement was before we implemented the Boost by RPM. Now that we're changing duty cycle as a function of RPM, the boost plot is what I like.

I'll go back and play with the Flashpro, but I don't remember being able to change the RPM index for that table (although I don't need to at this point)

 

When I got tuned a few weeks ago, I started on a 12psi pulley. 1st pull untuned did 350whp. The tunner said if I intended on reaching 400whp, to swap to a smaller pulley. So I put on a 14psi (3.4" on the 1200) pulley and gave it another go. I had precviously set the rev limit to 8500, but now it was hitting a wall at 8100rpm. So after farting around with hondata for 30min setting the revlimit to 10k and it still wasnt working I thought ignition. Beyond 12psi my stock gapped ngks were braking up. So as I pulled the plugs, the tunner regaped them ( he was supposed to gap them per my instructions @ 025" but gapped them to 017. It then spun to 8500 making 390whp at 14psi. Seemed a bit low to me so a few days later, I pulled the plugs to see how close they were to .025 and they were .016-.018. I was like WTF and re gapped them to .025. The car idled much better, so I took it around the block to datalog, and now noticed it running lean in the upper rpms. hitting 14:1+ beyond 7krpm. So after wasting $400 on an idiot tunner, I will now have to go with someone new for my retune here shortly.

Long story short, I think ignition is the root of your problems. Whether regapping the plugs or upgreading the ignition system.