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[Fullsac Performance]

Here's a back to back dyno test done on the same day. A baseline run of a bone stock 09 CVO RG before, and then after the installation of our new headpipe replacement and 2.0 Hi flow baffle kit. Remapping was done with a TTS Mastertune. Base maps from this dyno session will be available as part of a "Plug and play" package.
All runs were done in 4th gear.  Just a note; Our new headpipe only out performed the modified stock one by 3 hp. I really believe as power levels rise closer to 1 hp per cube with cams and headwork, our new design will show a larger increase over the "uncorked" stock ones. To stay on course with my commitment to offer product and services of great value, we are now modifying stock headpipes for 100.00. This mod alone showed an 8 hp increase. Use of the matching base map is highly recomended for the headpipe mod. AFR numbers went way lean at WOT.

Steve

[jfh]

Steve,

Can you describe the modification to the stock head pipe that you are offering. I assume it is more than the partial cat removal.

Thanks,
John

[Fullsac Performance]

Steve,

Can you describe the modification to the stock head pipe that you are offering. I assume it is more than the partial cat removal.

Thanks,
John

We are taking the stock cat headpipe, cutting it in half and removing 100% of the power inhibiting media, then welding it back together in a fixture to keep it straight.
After opening one up, you can really see how "coring" it is really favoring the rear cylinder. The front cylinders headpipe extends further back coming within 2-3" of the cat leaving it choked off. Definite potential for a big split in AFRs only uncorking one cylinder, not to mention only half the power gain easily available.
Steve

[RickC]

Here's a back to back dyno test done on the same day. A baseline run of a bone stock 09 CVO RG before, and then after the installation of our new headpipe replacement and 2.0 Hi flow baffle kit.

Steve, any info on price and availability? Is this a complete replacement headpipe?

[HDDOCFL]

Steve ? So is your modified head pipe the same as the stock non CVO headers, 09 of course?  Another ? Did you get a chance to do a dyno with your 2.25" baffles in that 09 SERG.  Thanks Doc

[HDDOCFL]

Steve you also mention bone stock, does that include the dyno was done with the stock 09 SERG intake/ A/C ?  Thanks again Doc   By the way I would be real happy getting those Numbers!!

[Texas 103]

We are taking the stock cat headpipe, cutting it in half and removing 100% of the power inhibiting media, then welding it back together in a fixture to keep it straight.
After opening one up, you can really see how "coring" it is really favoring the rear cylinder. The front cylinders headpipe extends further back coming within 2-3" of the cat leaving it choked off. Definite potential for a big split in AFRs only uncorking one cylinder, not to mention only half the power gain easily available.
Steve

 I'll second that one Steve......Greg    Hey Chip, does this discussion sound familiar?? Greg

[NW_FLSTRSE3_2009]

Steve,

Thanks for posting these numbers and spending time explaining these details further on the phone.  I cant wait until your Head Pipes are available!!!

[Fullsac Performance]

Heres a sneek peek at the headpipe used in the dyno test from under the stock shields. Its a prototype built from sections. Production will much more refined. I will be spending all morning with the CNC bender working on bend programs. Availability? 4-8 weeks. maybe sooner, maybe longer. I am now at the mercy of others to make the pieces I need to weld together back in my shop. It just takes time to work it all out. Thank you all for your interest.

Steve

[LarryB]

Steve, great job. Numbers look good.
In your opinion, if cutting the head pipe open and removing all the C/C and re-welding, would that alone give me good balance from left to right side.

[Fullsac Performance]

Steve, great job. Numbers look good.
In your opinion, if cutting the head pipe open and removing all the C/C and re-welding, would that alone give me good balance from left to right side.

Even with the cat completely removed, the stock exit arrangement is always going to favor the right side slightly. For the majority of people, "uncorking"  the stock headpipe will be the best hp per dollar ever spent. You gotta love Harley for making it this easy. Who would ever think you could gain 8hp with a chop saw. Lol...

Steve

[BigLew55]

Steve, have you tested the new header on 96" '09s without the cats?  Just wondering how much your 'X' design would over non-cat stockers?

[LETS_ROLL]

Steve, thanks for all the info.  What's the turn around time for the un-corking of the head pipe.  Thanks, Gabe

[planenut]

thanks for your work and you really help us out here ,

thanks steve

[Fullsac Performance]

Steve, have you tested the new header on 96" '09s without the cats?  Just wondering how much your 'X' design would over non-cat stockers?

The first dyno test of removing the cat that I did was on a 09-96" that showed all but zero hp gain. At 75 hp the cat isn't holding any power back. On the CVO 110, whole different story. At 95hp, the cat and stock muffler are killing off about 10hp. Not to mention building heat and hurting fuel economy.

Steve