jamesr242

I just hooked up a DIY autotune boost solenoid but I can't seem to get it to do anything (tried open loop at 100 and 0 duty, and closed loop). I have the ground hooked up to the green wire (pin 20) on the Reverant enhanced ms2 and the other wire to +12v. I suspect that the MS is using the wrong pin to control the solenoid which is currently outputting on PA0. Is this the right pin to output on? Any other ideas?

Reverant

iTrader: (10)

That's the correct pin, wire color and port (PA0).

What's the symptom? No/low boost?

jamesr242

I'm just getting wastegate pressure only, ie the valve isn't closing at all. I tried 100 and 0 duty across the map in open loop and it didn't activate. I'll take a snapshot of my boost settings and take some pics of the hookup when I get home.

jamesr242

These are the settings I'm using

jamesr242

Well, I am retarded, the fuse blew somehow in the 20 minutes after I installed it. I did some tuning today and am doing okay with the closed loop control. I'm targeting 10 psi but still have a bit of oscillation (probably need more D).

What I don't like is how the solenoid isn't closed until I mash the gas. It's resulting in some shitty spool times and I don't hit 10psi until 4000 RPM. I'd like the solenoid to stay completely closed until I hit my target. Is that possible with closed loop?

BTW I have the flying miata kit with full 3" exhaust and 2560 turbo. On wastegate it hits 8psi and creeps to 10 by redline (probably because of the exhaust)

EO2K

iTrader: (37)

Yeah, probably because of the exhaust. Look up exhaust housing porting here on the forum, lots of guys running these same parts with the same issue. Either DIY port the hell out of it or send it off to BEGI and pay them to do it

You should know better than to say things like that on this forum

jamesr242

Well we do drive miatas, don't we all want the D? Anyway, I couldn't care less about the creep because that's no problem for my 650cc injectors from FIC. In fact I'm targeting about 11psi (175kpa).

I'm not entirely sure how to keep the solenoid closed until I hit my target. I'm thinking I should figure out what RPM I hit my target at with the solenoid manually closed in open loop and then make all the values below that RPM 175kpa in my boost target table

Reverant

iTrader: (10)

Which fuse?

jamesr242

It was the 5A fuse I installed on the +12V wire of the solenoid. I'm pretty sure it blew because I left it in the fuse holder while I was soldering the wire on the other end