Is everyone using the Competition? Those logs posted earlier have a lot of IAT movement that my Perf doesn't. That's to be expected, but seems a lot worse that I expected. It was mentioned before about Comp not looking like traditional tube/fin, they never have to me from the outside either. Those extrusions must be comparatively huge (and lower in count accordingly), I'd love to see what the fin structure looks like in them if anyone can get a camera in. Added size of the Evo 3 will at least add some more.
Random 19-21psi 3rd gear log in Texas with 101F ambient and heated Evo 2 Perf (3rd or 4th pull). Starting IAT 129F, ending 122F and staying there. Once IC is warmed up, 122F IAT was about as good as it got any time it's over 100F ambient.
For stock turbos bigger isn't always better and the evo 2 wasn't small it's 90 percent bigger and a 7.5 race vrsf is 134 percent bigger than stock and the manufacturer says it isn't for stock turbos and to stick with the 7 HD for reg builds the 7.5 Is rated for 1000whp. Also people that ran multiple fmic all said Wagner had best street manners in that it has the least lag. This evo 3 is even bigger so should be a great fmic that will handle hybrids and or single if needed.
People that run turbos outside reasonable ranges cause their own heat issues. The Comp ICs seem to leave something to be desired as it is, but anyone that "needs" a race IC on stock turbos to keep IATs reasonable, doesn't have an IC problem. They have an expectation and too much boost (and probably DCI/hot side inlet) problem. ICs get blamed for things owners do all the time.
Dinan is Spearco core BTW and the Evo 2 is really not much larger than it. The main Evo 2 core is about the same size as the Dinan core with another ~3x3.5" core on top for the step. Construction/density is nearly identical inside and out. Evo 2 is noticeably better for rise/time, but I think most of that came from the sheet metal->thick cast end tank change. They are extremely similar and I seriously doubt the small step core outside of air flow is having that much impact.
In for final impressions of all 3.
It would be worth asking your builder of the custom IC, what core type and manufacturer it is. That is the important factor. Greddy/Spearco/Bell are the age-old bees knees. If he used one of those, I'm surprised. But also not too much at China cores catching up.
Speaking of logs. Let's poke the bear and see who has empirical data where the doing away with the OEM quick disconnects on the inlet/outlet is a good idea.
Funny how VRSF's F2x intercoolers have the same "small flow restriction" CNC'd quick disconnects on them and no rubbish hose kit (they are all rubbish, Wagner, VRSF etc).
Empirical for sure and maybe not that fair given the temp diff. Same map, last log on the Dinan, first log on the Evo 2 Comp that replaced it, but they were 2 days apart.
Some diff is surely attributed to temps, not sure how much can be attributed to dropping the stock connectors, but almost seems like it has to be a factor. They are definitely solid connectors, but have to believe they really are somewhat limiting at some point (maybe not so much on stock turbos). Then again, one or a few logs don't make it so. So long as I don't have problems with the silicone connectors (and haven't in the 2.5 years they've been in), I don't particularly care. May not prove they are helping, but they're not hurting either.