So, after running the Bluespark for a few days I'll highlight my pros and cons for this part. I will use the SXTH Element stage 0 tune as a reference point since that's what I had on my Veloster for years.
Cons: This is just tricking the ECU into producing more boost. You still have the funky tune from the factory except now when the boost comes on its much more aggressive. Up against the SXTH tune it is inferior in the sense that on the proper tune my Veloster would jump to 21 pounds of boost from 2,500 damn near to redline. This just produces more boost on the factory tune. SXTH was power on tap, this still has a bit of lag on it.
Pros: This is a marked improvement over stock. If you keep your shifts up in the rev band you stay in boost much better vs stock. It will chirp second gear if you get on it and it pulls much harder than stock. Passing power in 6th gear on the highway, 4th gear pulls like a beast on the highway. If I had to put a number on it I would say this is 2/3rds of the joy from the SXTH Stage 0 tune at half the price. Install was 10 minutes since I don't have a stock airbox to remove.
I'm still on the recommended "C" setting that it came set to. Once I do plugs, packs, downpipe etc. I'm thinking of moving it to D and see how the car performs.
Is anybody on here running it on the D setting? If so could you list your mods and what your impression is vs the C setting?