Miatav8,MstrASE,A&P,F wrote:
The best indicator of fan performance is amp draw with all the bs claims of cfm.
Agreed, this has been my experience. Amp draw is a good proxy for airflow.
We’ve had a few fair weather days, enough to get the tune decently close. A couple surprises:
The intercooler temp gauge is an absolute waste. It’s so sluggish to respond as to be worthless. It’s built for aircraft and I suppose it might be fine for that application since that usage more approaches steady-state loading.
The intercooler is doing well but it’s not ‘night & day’ temp drops. That was expected as it is on the small end of the spectrum. I was also expecting it to pick up some amount of heat with its proximity to the radiator, but it’s quite a bit more than I had anticipated. Surface temp runs about 150 degrees once everything is fully warmed regardless of how lightly it’s driven. Need’s more shielding.
Turbo is running beyond its efficiency once above 10psi (running about 11.5psi currently). It’s noticeable in the fueling as the VE is dropping off notably in the map above 10. Which is perfectly fine as I’m happy to run 10psi.
The upside is the car makes great power as is and is mildly spinning the tires through 1st gear, pulling just about exactly 1G in first. Making 6psi at around 1750rpm, lag is damn near non existent. It’s the least laggy turbo car I’ve ever driven, most people wouldn’t notice it was boosted unless you told them. That’s a big win as that was the goal - I wanted drivable refined power and that’s what I got. Ridiculously easy to drive stupid fast with confidence. The deeper I get into Tuner Studio the more impressed I am. They’ve done a great job paired with the MS3 Pro. Overall drivability is quite good, just have a couple areas left to polish up and feel confident I can get there.
The cooling mods are working very very well. Previously the coolant temp would fairly quickly rise with boost. Not noticeable on the gauge but showed up in data logging. Now the temp is virtually unaffected with extended boost driving, max I’ve seen so far is about 2 degrees on long pulls.
Between the ceramics and hood vent, under hood temperatures have dropped substantially when parked after a hard run, I’d say unscientifically damn near 100 degrees.
Overall it’s coming together well and would trust it on an extended trip at this point.