After sorting out some hardware issues the car is finally running like I feel it should. The issue I have now is that it's breaking up under higher boost levels. Almost feels/sounds like a rev limiter.
7 psi (wastegate springs) pulls clean until I lift but once it hits ~12psi it starts cutting out. I haven't tried lower boost DC percentages yet to see what happens at say, 10 psi. Overboost is set to 200 kpa so I shouldn't be near that.
Pertinents:
Turbo LS1, TH400, Belt drive fuel pump (hence the high cranking PW), running on VP110, LS2 coils
Running TR6 plugs gapped to .025"
Overboost protection
Moderators: jsmcortina, muythaibxr
Overboost protection
'77 Datsun 280Z twin turbo LS, MS3Pro equipped
745rwhp @ 7 psi
745rwhp @ 7 psi
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- Super MS/Extra'er
- Posts: 2637
- Joined: Tue Sep 14, 2004 4:17 pm
- Location: Aberdeen, Wa
Re: Overboost protection
Nothing looks odd or out of place at a quick glance. No status codes. Have you verified timing with a light? I also noticed timing is really low even running 110 race fuel. I'd also switch to a br7ef gapped about the same. Could also try a little more dwell at 3.5ms
Volvo 940, 2jzge, MS3Pro, daily
240Z, 2JZ, MS3Pro boost control
240Z, 2JZ, MS3Pro boost control