Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Hoist!]

But if you look real close at Maudie, she's got black tips

And it's a stock

[HUBBARD]

Yeah Terry, I know about his stock 120" Hillbilly Rocket Rider bike. What's that, an FLHHRRSE?

[HUBBARD]

Thanks Hubbard. From what I've heard about your ride, that Hillbilly Engineering does pretty damn good. Yours is one bike I'm lookin' forward to checking out. I'ved used the Supertrapp slip-ons on my other RK's and still have them. They're a little ratty now. I got 'em in '96. I've heard these S&S's perform pretty good too and wanted to try them. I've heard that before about the freeze plug. Maybe I'll think about trying that old freeze plug routine before buying the TD's. I haven't heard anyone talk about that in awhile. You have a base map for them?

[SBB]

Naw, Man!

[SBB]

Hey Hub

How bout a run down to Shatley Springs on Sunday?

 [smiley=nixweiss.gif]

[Fired00d]

But if you look real close at Maudie, she's got black tips

And it's a stock

[Hoist!]

Yea, a stock [highlight]rocket[/highlight]. [smiley=xyxthumbs.gif]

 [smiley=pumpkin.gif]
Ride Safe,
Fired00d
 [smiley=fireman.gif]

 Posted on: Today at 4:53pm
Quote from HUBBARD on Today at 4:44pm:


Naw, Man!

[djkak]

Just to throw in some Hillbilly Engineering, the most economical, and practical performance enhancement for a stock engine, whether it be 88, 95, 103, or 110 cu. in., is SE, or Super-Trapp slip-ons, and a Bow-Tie small block freeze plug inserted in the left curvature of the of the Y-pipe, with a 5/32 hole drilled in the middle of it.

[HUBBARD]

Hey Hub

How bout a run down to Shatley Springs on Sunday?

 [smiley=nixweiss.gif]

That would be great, but we have two obstacles to contend with.  (1) They're closed for the winter.  (2)  All that salt dust is on the roads.  Not good.  Appreciate the thought, though.  It would be a great day for a ride.  We'll have to postpone until next year there, Dad.  Merry Christmas to you and Nancy.  Later--HUBBARD

[SBB]

That would be great, but we have two obstacles to contend with.

[Screamin_Beagle]

Been outta town for a while,  this topic may be done,  but my vote goes to Hooker....be careful,  they make systems for 95" and below and 96" and above so buy the right pipes.  The reason I like the hookers is the performance.  I have true duals,  and both pipes  are pinched down to the torque setting (yes,  that's right.....on a 800 lb bike....with my big a$$ sitting on it,  I want ALL the torque I can get).  HP is measured at an RPM level where you (or I ) don't ride.  Big Bike....make torque....Look at the Hookers or E-Series or VH..........that's the way to go.
JMHO


_Beagle

[SPIDERMAN]

Been outta town for a while,

[VaEagle]

Wow didn't realize how close the poll would be, 2 into 1 at 19 now and the true duals at 19 also! 8-) Stock is at 10.

[kojak]

To simplify things,
1. All other factors being equal, a more restrictive exhaust will help lower end torque, hurt hp at higher rpm. This could be crossover headers, more restrictive baffles etc. Way to overcome this is to improve the combustion process at lower rpm ranges hence the tuning issues. Having a closed loop EFI system with O2 sensors provides more flexibility.
2. A lean running engine will run hot! Again tuning is a great way to help with that.
Having the same bike set up with a true dual, ac and a efi tuning device (PC3, SERT, Whatever) and then with slipons mounted to stock headers and tuned by someone who knows on the same equipment and I bet the difference in TQ/HP will be insignicant.

[kojak]

To add to the whole performance, exhaust/efi/ac/cam discussion:
Since the EFI computes the exact amount of fuel required for a specific engine RPM and load on the engine, changes to the exhaust system, air filter, camshaft(s) or other engine components, will need to alter the fuel map.
As you modify your engine, the amount of air that can enter each cylinder is changed. This increase in air into the cylinders (Volumetric Efficiency) is the reason to add more fuel. If fuel map changes were not made, you would end up with a lean running engine(HOT). There are 3 basic ways to alter HD EFI fuel maps.
(1) Piggy Back computers
Power Commander
Generally used with:
 Intake upgrades, exhaust upgrades, Cam changes, Internal engine upgrades
The PowerCommander is able to change  the factory AFR by altering sensor signals to the OEM ECU. This relatively simple strategy allows a great deal of flexibility when it comes to creating better fuel maps for modified engines. These packages allow you to compensate for a wide variety of engine components.
The OEM fuel map is never changed. All the PowerCommander does is "fool" the factory ECU into altering the amount of fuel the engine gets. Creating custom fuel maps requires a personal computer, and a certain amount of knowledge of EFI and PowerCommander software.
 
(2)Pulse Extender
 SE Race Fueler
TFI by Techlusion

Used commonly with:
 Intake upgrades, exhaust upgrades Cam changes, minor internal engine upgrades
The TFI can be best described as a pulse extender. It allows the fuel injectors to stay open longer, thus providing more fuel to the engine. The TFI does not require a personal computer or any special equipment to tune the engine. All you need is a screwdriver to adjust 4 variable resistors. Anyone who is familiar with tuning carburetors will feel comfortable tuning the TFI.
The simplicity of the TFI is also a disadvantage. Its ability to alter the fuel curve is limited to richening the OEM fuel curve
 
(3) Engine Management Software (EMS) packages
 SE Race Tuner
Used with:
All street or race engines with any level of modifications
 Engine Management Software allows you to modify all operating parameters in the ECU. In most modern EFI systems, the ECU controls the fuel and the ignition. The ability to alter fuel curves, ignition curves, rev limiters and other engine parameters is the ultimate for fine tuning a performance engine.
 These packages tend to be expensive and very complex. In many cases the EMS packages may have some "canned" engine combinations predefined to help the user. But like the Chip Upgrades, these canned engine combinations assume that your components match their list of parts.

Despite these issue, Engine Management Software is the best way to upgrade an existing OEM ECU. Devices like the PowerCommander and TFI will never be able to give the required control over the EFI and Ignition systems.
 
More info at www.nightrider.com/biketech