Throttle response (torque)

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Oct 29, 2013 | 01:00 PM

SIX6ONE

Thread Starter

Cruiser

Joined: Aug 2012

Posts: 155

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From: So Cal

Throttle response (torque)

This past weekend my local dealer held the Harley Demo Days and I got to ride the Street Glide special. Overall I was not too impressed but I did love the throttle response that it had. Compared to my 08 SG it was night and day. My bike does not have near that much response (torque).

So I ask you guys, what creates this torque? I know it’s a 103 motor compared to a 96 but it was super responsive. I want that! What do I need to look at doing to get even close to a snappier throttle response? Cams? Dyno tune??

My bike has a stage 1 (Arlen Ness big sucker), PC3 (with map to match specs listed here exactly), 3.5 Rienhart tru duals full system. The rest is stock with 13,XXX on the odo.

Can you guys educate me? Thanks.

Oct 29, 2013 | 01:06 PM

XARAN

Stellar HDF Member

Joined: Nov 2004

Posts: 3,156

Likes: 41

From: So Cal

cheapest way is to try a set of bolt in cams, go over to the Fuel Moto site to see some dyno sheets. Best way is a Big Bore kit with cams (stage 2 big bore) You probably beat the tq of a stock 14 with a good kit.

Oct 29, 2013 | 01:24 PM

SBates08

Seasoned HDF Member

Joined: Jan 2013

Posts: 10,637

Likes: 1,246

From: Lake, Ms

For the return vs dollars spent, the FM107 kit will be hard to beat. It will make you fall in love with your bike all over again!!!

Oct 29, 2013 | 01:45 PM

Texas Fat Boy

Extreme HDF Member

Joined: Dec 2006

Posts: 10,045

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From: ST. Louis

"Cams" ............it's all you need to change.
Harley finally changed to a better cam in the 2014 models.

Not to knock your setup but, True Duels really hurt low end response (torque)

Oct 29, 2013 | 02:01 PM

Keeper01

Tourer

Joined: Jun 2012

Posts: 374

Likes: 1

From: Bakersfield

The easiest way is cams, 2-1 header, and a good tune.

Oct 29, 2013 | 02:04 PM

SBates08

Seasoned HDF Member

Joined: Jan 2013

Posts: 10,637

Likes: 1,246

From: Lake, Ms

Quote:

Originally Posted by Texas Fat Boy

Not to knock your setup but, True Duels really hurt low end response (torque)

The effect True Duals have on torque can't even be detected by the butt dyno. The only place you'll notice that is on the dyno sheet.

Oct 29, 2013 | 02:10 PM

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

Likes: 2,898

From: Bedford UK

The water-cooled exhaust valves in the 2014 models have enabled Harley to increase CR and use better cams. So the clue is in that sentence! If you use a 107 kit, such as the FM suggested, you will get increased CR, better cams, plus a reprogrammed ECU (via a PCV). Sorted!

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Oct 29, 2013 | 02:33 PM

grbrown

Club Member

Joined: Jun 2007

Posts: 45,429

Likes: 2,898

From: Bedford UK

Quote:

Originally Posted by SBates08

While what you are saying is true Mr. Brown the OP test rode a SGS and was commenting on its torque and throttle response.

Compared with his 08 SG. So if he does as already suggested and fits an FM 107" kit, or similar, he will get a boost in performance through increased CR, more cubic inches and a change in cam, etc! Which is what the SGS has.....