Preveios dyno links
TBI 18g tdo5h, 3" exhausts, cat and quite muffler. Intercooler upgrade, ported head, stock size ss valves, degreed hr70 cam. 7-1 pistons. 2g mas, 850 / 1400 injectors. Race gas blend. Tuned with Neo afc and Innovate logworks data logging.
First run about 21 psi average. Boost was choppy. This is a spikey turbo. We leaned out the turbo spool up and tweaked the fuel a little up top. Last run 25 psi average. The boost trace smoothed out some as we raised the boost. We let it cool for the last pull and made sure the intercooler was fully cooled. But could not get 300. Made 300 uncorrected, does that count?
The extra boost and tuning mostly helped the torque. I am really pleased with the torque.
Edit, I also gained hp in the 3500-4800 rpm range. It was just the peak hp that stayed about the same.
Shop wide band was reading .6-.7 leaner. I need to do a recalibration. I meant to do it beforehand.
My car still has some of the 1.75 intercooler piping on it, that will be the next upgrade.
Edit, this turbo really should have an external waste gate. That would probably add a little power as well as better boost control.
My short block was pulled from a parts car with a sized motor. It turned out to be a fresh stock rebuild that spun a bearing and locked up when an oil line failed. I replaced the crank, bearings and head. The head was replaced again last year. I have been flogging it for 4 years. I do not understand why people do full rebuilds on motors with fixable problems and spend tons of money on everything but what actually makes the power.
Edited by StarquestRescue, 28 April 2013 - 06:55 PM.