| Author | Message | ||
     D_adams |
I'll throw mine in the ring. These have had ZERO tuning done to them. The only mod I've done so far is the K&N filter, which will be removed shortly and retested with the stock filter. Even so, they both matched the stock pipe for HP and torque. Stock except for K&N filter.  Custom made exhaust, single 2.5" outlet.  Custom made dual 2" outlets.  Pics of the pipes.     | ||
| D_adams |
Here's one tucked a little tighter to the motor.   | ||
| Teach |
The workmanship looks really nice and I applaud your efforts to create something, instead of just purchasing something off the shelf. I look forward to what your numbers look like after you do some tuning. | ||
| D_adams |
 Thanks Teach! I'm planning on doing something this spring when time allows me to play. Based on what it's doing now for the a/f mix, I would imagine it will get some decent gains. | ||
| Blackflash |
There is one problem with the way you angled it adams.Im not bashing here.But when you cut the angle on the muffler entrance to what a 18-20 degree to get the tucked look.Your now aiming all the hot air in one central area .And not straight through a perf tube as intended.Packing will burn out immediately.My prototype I cut open was the same way 18-20 degree cut. anyhow it burned the stainless packing to dust in that area.I hope noone bought one yet it needs some refining.Keep up the good work.   | ||
| D_adams |
Dyno with and without the stock overlay. RT Type 3 round can. 8.5 hp gain peak, looks like possibly 15+ at 9000 rpm. Average gain appears to be a minimum of 4-5 hp everywhere with larger gains up top. The dip is still there and I'm still thinking it's from the K&N filter. I'll be doing another set of runs in a couple of weeks.   (Message edited by d_adams on March 12, 2010) | ||
| D_adams |
Took it in today for another dyno run for something I've suspected but hadn't proved until now. All of the pipe I've made show a MINIMUM of 15 hp gains. Peak shows about 11 hp. This is the original RT Type 1, for those of you who purchased one, you just got a huge bonus.  Closeup of the numbers.  For comparison, the stock run. There was a point in there somewhere that showed either 18 or 19 hp over stock but it got clicked on again and I gave up hunting for it. This pic shows 17 hp, so it's close enough. Again, this is with NO TUNING, bone stock ECM.  | ||
| D_adams |
Don't have the chart from this, but it's an Erik Buell Racing race ecm with their stock race map, no adjustments. 122 hp on a superflow dyno (2nd pull) and it's still running lean, even with the race map. 12% more for the dynojet number = about 136-137 hp without any extra tuning. I will be sending the pipe back to them sometime after the 1st of July for additional tuning and I assume they'll have the custom map for these sometime after they get it. This is pretty much just a baseline run for the RT-4 and it needs a bit of work for fuel changes. We watched the Drummer get tuned and that lasted for maybe 5 hours straight. |
