Why 2 into 1
My experience may be useful to share.
I am running a S&S 106 with big throttle body and high flow heads. It came with a V&H Big Shot that we left on it. Used a PCIII for fuel management. Took it to a Dyno in May and found it was running 85HP/96TQ with a very flat TQ curve. The A/F ratio was off the chart rich.
I picked up a D&D Fat Cat with small baffle on ebay for a couple hundred bucks. My mechanic installed the pipe and leaned out the PCIII as much as he could. Just changing the pipe and leaning it must have boosted the HP/TQ considerably because it acted like a new bike.
Subsequently, I've replaced the PC III with a TTS Mastertune and spent the money for a complete dyno tune. My HP/TQ went to 94/112 and pretty much kept the nice flat TQ curve. THe A/F ratio is spot on now.
The thing pulls like a monster and runs much, much smoother. Gas mileage went up a bit and I couldn't be happier. Consider this a strong recommend for a 2-1. I doubt I'll use anything but a 2-1 in the future unless I'm building a "look" rather than performance.
I am running a S&S 106 with big throttle body and high flow heads. It came with a V&H Big Shot that we left on it. Used a PCIII for fuel management. Took it to a Dyno in May and found it was running 85HP/96TQ with a very flat TQ curve. The A/F ratio was off the chart rich.
I picked up a D&D Fat Cat with small baffle on ebay for a couple hundred bucks. My mechanic installed the pipe and leaned out the PCIII as much as he could. Just changing the pipe and leaning it must have boosted the HP/TQ considerably because it acted like a new bike.
Subsequently, I've replaced the PC III with a TTS Mastertune and spent the money for a complete dyno tune. My HP/TQ went to 94/112 and pretty much kept the nice flat TQ curve. THe A/F ratio is spot on now.
The thing pulls like a monster and runs much, much smoother. Gas mileage went up a bit and I couldn't be happier. Consider this a strong recommend for a 2-1. I doubt I'll use anything but a 2-1 in the future unless I'm building a "look" rather than performance.
Road Captain
Joined: Jul 2014
Posts: 717
Likes: 15
From: San Dimas
V&H ProPipes made significantly more torque throughout the rev range than the V&H Short Shots on my Springer. But I loved the way the short shots sounded so they won out 
My 98 RK has Thunder Header 2-1 with a fakie on the left side-- it pulls like a raped ape.
My 98 RK has Thunder Header 2-1 with a fakie on the left side-- it pulls like a raped ape.
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