not oring-ed, if the tune is good the o-rings arent 100% necessary. ON a good tune the M20 can take a LOT more abuse than people realize. I ran about 6 months on a holset H1c at over 20psi on a stock 24yr old headgasket...without issue. Only reason I switched out everything was because i snapped a rocker arm.
Now with the Myster-e head I daily drive on "low boost" which is 17, I've run once with the cam upgrade at 23psi and it was completely retarded and unusable so I cranked it down to 17psi where it stays.
Since most wont trust numbers from virtual dyno, I'm not going to quote any power numbers, but I do have a stop watch and a speedometer w/ a few key speeds GPS confirmed.
lets just go for this car will run 60-100mph in 5 seconds flat, thats more than reasonable on turbo E30 w/ stock motor. I can get a hair under 5 seconds no problem at 17psi.
The Subaru tuner here runs 60-100 in 4.5seconds at a bit under 500whp with full weight of around 3200lbs.
Now with the Myster-e head I daily drive on "low boost" which is 17, I've run once with the cam upgrade at 23psi and it was completely retarded and unusable so I cranked it down to 17psi where it stays.
Since most wont trust numbers from virtual dyno, I'm not going to quote any power numbers, but I do have a stop watch and a speedometer w/ a few key speeds GPS confirmed.
lets just go for this car will run 60-100mph in 5 seconds flat, thats more than reasonable on turbo E30 w/ stock motor. I can get a hair under 5 seconds no problem at 17psi.
The Subaru tuner here runs 60-100 in 4.5seconds at a bit under 500whp with full weight of around 3200lbs.
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