UselessPickles
Making Grand Canyon replicas from air boxes...
As soon as schedules allow, I will be getting my bike dyno'd along with a stock FJR to find out exactly how much I gained.
Here's what I've done to my bike:
This all cost me somewhere around $2500 and a lot of custom DIY installation/modification.
I expect my results to be similar to Wicked Webby's results because he also has the same air box mod and Remus Hexacones. However, he has a stock header and less precise control over fueling adjustments than I do, so I predict a bit more top-end HP/TQ (from the header) and smoother HP/TQ curves (from the more precisely tuned fueling). Here's Wicked Webby's dyno chart. The lowest curve is with Remus Hexacone slip-ons and everything else stock. The highest curve is with the modded air box introduced along with very crude adjustments to fueling (controversial adjustments made through the bike's display panel via the "Barbarian Mod" that is believed by some to be a baseline fuel injector trim adjustment that affects the entire RPM range):
The best evidence of performance gains I have right now is from the drag strip. My previous best run on a nearly stock FJR (Holeshot header + stock cans, PCIII with standard map - not properly tuned) was 11.360s @ 120.6mph. My current best on the new modded bike is 10.894s @ 126.76mph. According to a data log (from the Motty AFR Tuner) on a 10.999s run, I reached 120mph in 9.79s. That's a 1.57s and 13.8% gain in 0-120 acceleration.
Some other tidbits of info:
As for the full exhaust system for the C14 that you pointed to, it gives a 14.5% increase in peak HP and 7.4% increase in peak TQ. I don't know how well peak TQ/HP gains translate to gains in acceleration times (actually depends on the exact gains across the entire RPM range, more biased to the high end because the low/mid range is only used in 1st gear to get going, etc.), but I could imagine than the gains I've gotten (13.8% in 0-120 acceleration) are similar percentage-wise to the gains on the C14 with similar mods (a full exhaust system and custom fuel mapping).
Bask in its glory!
Here's what I've done to my bike:
- Holeshot header + Remus Hexacone slip-ons (the Holeshot header was designed to fit the previously existing Holeshot slip-ons, so it's technically compatible with any after-market slip-on, but some, like the Hexacones, require expanding of mid-pipes to fit the header).
- The "Wicked Webby" air box mod: https://www.fjrforum.com/forum/index.php?showtopic=114873
- Motty AFR Tuner (similar to the new Power Commander V + Auto-Tune module): https://www.fjrforum.com/forum/index.php?showtopic=113507
This all cost me somewhere around $2500 and a lot of custom DIY installation/modification.
I expect my results to be similar to Wicked Webby's results because he also has the same air box mod and Remus Hexacones. However, he has a stock header and less precise control over fueling adjustments than I do, so I predict a bit more top-end HP/TQ (from the header) and smoother HP/TQ curves (from the more precisely tuned fueling). Here's Wicked Webby's dyno chart. The lowest curve is with Remus Hexacone slip-ons and everything else stock. The highest curve is with the modded air box introduced along with very crude adjustments to fueling (controversial adjustments made through the bike's display panel via the "Barbarian Mod" that is believed by some to be a baseline fuel injector trim adjustment that affects the entire RPM range):
The best evidence of performance gains I have right now is from the drag strip. My previous best run on a nearly stock FJR (Holeshot header + stock cans, PCIII with standard map - not properly tuned) was 11.360s @ 120.6mph. My current best on the new modded bike is 10.894s @ 126.76mph. According to a data log (from the Motty AFR Tuner) on a 10.999s run, I reached 120mph in 9.79s. That's a 1.57s and 13.8% gain in 0-120 acceleration.
Some other tidbits of info:
- For maximum performance (how much more is unknown), look at the Muzzy 4-into-1 complete exhaust system. Personally, I think it's ugly and not worth a bit more power to have a single-sided exhaust system on a bike that was designed to have dual exhaust.
- There isn't any product known to be compatible with the FJR that can alter ignition timing.
As for the full exhaust system for the C14 that you pointed to, it gives a 14.5% increase in peak HP and 7.4% increase in peak TQ. I don't know how well peak TQ/HP gains translate to gains in acceleration times (actually depends on the exact gains across the entire RPM range, more biased to the high end because the low/mid range is only used in 1st gear to get going, etc.), but I could imagine than the gains I've gotten (13.8% in 0-120 acceleration) are similar percentage-wise to the gains on the C14 with similar mods (a full exhaust system and custom fuel mapping).
Bask in its glory!