barbagris
Mad Scientist
- Joined
- Aug 1, 2010
- Messages
- 12,988
- Location
- On the verge of insanity
- Ride
- 1979 Guzzi V1000G5 - 2018 KTM 790 Duke
Fitted mine on Saturday & removed secondary baffles. Test ride gave good impressions, but today (Sunday) it was obvious that I have a huge increase in acceleration, with power to pull from 40mph in 5th gear to 70mph in under 2 seconds. The raw acceleration when overtaking is awesome & the sound is absolutely fantastic, at least to me the rider. The bike is running really well, my only concern is the AFR especially if its running lean,is there a big advantage to running a "Power Commander" or can a new MAP be enough to ensure a good ratio? I'm not well up on all this technology.
A new bespoke map IS ALWAYS THE BEST WAY FORWARD even if you're running 100% bog standard.
But you need a good Dyno-God. Find somewhere that can use TuneECU though. Most will want to sell you a Power Commander.
As I don't have one close I went PC5 with the AT module and the difference is quite remarkable.
If you're running Standard pipes - especially the headers which are a bottleneck, then you haven't seen the half of it. On open pipes above 4000rpm - sweet Jesus.
Also (and this is just me) I'd not hit it HARD in 5th below 2250(ish) rpms. Let the motor spin a bit before you whack it. If you can hear it vr-vr-vr-vruuuuuum! - it's not happy. Bwaaaaaaaaaaaaaaaaaaah is the sound to go for.
I'd have left the secondaries in and forced to 100% - which apparently flows air BETTER. I've only recently learned this.
This said at those low rpms (under 2000) I find closing the secondaries a bit improves torque and acceleration under normal road use. Makes it smoother too.
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