I just got my JDM MAP installed, and over last weekend I changed over from my Hallman to my stock solenoid. My Hallman would spike 24.5psi hold 23psi pretty well, and taper to 18psi at redline

My old results with Hallman:
275 load @ 3500RPM
255 load @ 4000RPM
245 load @ 5000RPM
240 load @ 6000RPM
220 load @ 7000RPM

My new results with stock solenoid #60 pill:
290 load @ 3500RPM
280 load @ 4000RPM
275 load @ 5000RPM

Now, on the stock solenoid, I was gonna try to shoot for 280 load and hold it as best as I can, figuring this would be 25psi or so. I'm using a #60 pill, and I just did a quick short run just to see how much boost the MAP reads and how much load I'm hitting at peak torque:



This is on 93 octane only from Shell with my TBEC tables zero'd out... 11.7 AFR @ peak torque, 290 load, and 25psi... then moving forward towards 4000, my WGDC goes up to 100 and I hit 29psi !!! Is this ridiculous or what? My boost gauge only goes to 25psi so I can't cross-reference. I'm at 100ft elevation, I'm using a 14.7 offset in EvoScan for the MAP, and with the car off, the MAP reads 0.001 psi.

So, I guess I'm running 29psi on straight pump?

 

When I logged my runs on Monday, my peak boost was 24.18psi @3875RPM there I am hitting 274 2 byte load, but my peak load occurs at 3687RPM with 20.8psi. Take a look at my RPM, Boost and 2 Byte Load Log, hope you can use it for something. BTW, on this run my Defi gauge registered a peak of 1.73bars, which is roughly 25psi.

 

it could be possible because you aren't running a whole lot of timing...

 

Very true!!! Still I would turn tune the boost to be around 23-24psi on pump gas, 29psi can be a gamble.

 

SC, I have done the same thing with a little less boost with the Green (27psi). Its important to note that while its not "much timing" he is still running about 10* more than he would on the stock map. What you will find I would suspect based on my experience is that everytime you shift the boost is going to spike higher. At the track I have gained 4-5psi from 3rd to 5th in my logs, though I wasnt using any form of boost control at the time.

 

Well, either way, it's probably not safe for me to run this much boost on a stock head/stock internals.

I'll probably target to hold 25 psi, with little-to-no spike, and of course, the stock turbo taper