What would you guys say?
They were stock Harley pipes, but re-cored. I installed them and rode with them....no
new air filter, no dyno-fuel management...and the change in performance was noticeable.
The G/Friend noticed a slight noise increase and so I took the pipes back off.
I still have the pipes and will put them back on when my G/friend dies. LOL
chuck
Using higher-octane gas with no other changes may make a small difference because the ion-discharge knock-sensors in your stock ECM will allow more ignition advance before sensing detonation, but I'm not sure you'll feel the difference. I do use 93-octane, the highest I can get in this area, and tune for it because it does maximize power and gas mileage, plus should aid minimally in cooling, over the lower-octane grades because you can run more ignition advance. Does the improvement in mileage make up for the 10˘/gal. higher cost? Likely not, but I use it anyway because I know it is making some difference however minimal.
The next step up after a Stage I is to upgrade the cams. I did this last February with SE255's and am pleased with the result. Since I DIY'd the job and bought used cams on Ebay it cost me a total of $285 including the inner-bearing installer/puller tool. That provided yet another big bang-for-the-buck improvement.
I'm happy with this bike's performance now and won't likely be doing any more performance upgrades.







