I'm running Jardines with the MGS custom airbox. I replaced the tiny RU-2780 with the RU-1770. Riding over to the dyno, I could instantly tell that the 2780 had been starving the bike for air as the bike pulled hard in every gear with 2nd gear being a freakin' beast.
I tried 3 different tunes. The 1st tune was 20050_3 off the Tuneboy site. My 2nd stuen took me a week to create - I averaged every F1,2,3 value between 20050_3 & 1fsthombre. The 3rd tune was 1fsthombre.
1st run (20050_3): 138.35 HP 151.72 TQ
The A/F line pretty much stayed around 13 with some minor peaks and valleys. The low was 13 @ 4000 RPMs and the high 14.2 @ 3200 RPMs.
2nd run (20050_3 & 1fsthombre average): 137.47 HP 152.63 TQ
The A/F line was **** near riding the red dotted line with a low of 12.5 @ 5300 RPMs and a peak of 13.5 @ 3000 RPMs. The bike sounded so much better than the 1st run. The dyno guy looked over and thumbs upped me after that run.
3rd run (1fsthombre): 136.60 HP 151.28 TQ
The A/F line dug down to 11.5 @ 4900 RPMs and reached 14.1 @ 3200. The bike sounded like it was dragging ass, which the dyno guy confirmed with a shake of the head. Hombre's tune was way too rich for my Rock.
Although the top end HP results aren't dazzling, I compared torque and horsepower at various points from the 2nd run adn the time I dynoed my 20050_2 tune with an underseat K&N. I did gain anywhere from 7 to 10 HP along both the HP & TQ curves.
Next step is to custom map on a dyno with the tunelink & Tuneboy.
I really like the way the airbox looks. I will get some pics up soon. It seems like the airbox mod is more about that low end, torquey kind of thing. Ain't no way in Hades the airbox sucks as much air as the triple filter mod, so if you're looking for pure performance, then the triple filter (K&N or UNIs) mod is the bomb.