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Maybe this question has been asked before, but here goes. How much horsepower does a stock TC88 engine put out? I have seen the torque ratings, but can't seem to find horsepower.
Also, without testing on a dyno, about how much do you gain going from bone stock when you add free-flowing slip on mufflers and a K&N air filter (in the stock air cleaner)?
Thanks for the help.
 

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The 86 lb/ft that is spec is measured at the crank.

Stock TC baggers for the most part have between 60 and 64 RWHP, but now and then you get both high and low freaks. Stage 1 baggers usually end up between 70 and 74 HP. The new EFI baggers tend to come in on the high end but gearing makes a difference when measuring RWHP.

Dyna's seem to lose about 2 or 3 HP due to the more restrictive stock exhaust, and the softails with the B engine lose another 3 HP or so, but my non-bagger data comes just from a few bikes so I would take it with a grain of salt.

All being SAE corrected numbers.
 
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Sounds like the bottom line is the best 'bang for the buck' horsepower gains you'll ever get are the aircleaner, slip-ons and rejet or reflash mods...
 

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Well said, Tom. There would also be those who would also urge the 95" upgrade, but you start getting into real bucks for that kinda improvement. For a small amount of money, you can get a LOT of improved performance, and many riders don't feel the need for further [read expensive] improvements. There are many, many riders out there whose only modifications to their bikes are the ones you described. And we even have some riders who are riding their bikes stock, with no changes. Whatever makes ya' happy!
:cool:
 
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Truth be told, mine's still stock (well, if you don't count little 2 pieces of chrome, brighter lightbulbs and a Kuryakyn Hot Flash ...). Damn, I'm a 'Seasoned Rider" now, gotta go back to keeping my mouth shut ...
 

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So is mine, there have been absolutely no performance enhancing components "added" to it. There might be a little strategic aluminum missing here and there, but I don't know where it went. LOL
 

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Tc88-hp

My 06 FXST makes 79+HP (just shy of 80).
Stock engine with Cycle Shack Drags and a Jet kit. Thats it.

I added a High Flow K&N to it and dynoed it again, same numbers,
so the air filter is NOT restrictive enough to cause any power issues.
 

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My 06 FXST makes 79+HP (just shy of 80).
Stock engine with Cycle Shack Drags and a Jet kit. Thats it.

I added a High Flow K&N to it and dynoed it again, same numbers,
so the air filter is NOT restrictive enough to cause any power issues.
Keep using that dyno.. It will give you good results..
 

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Dynos rule!

Keep using that dyno.. It will give you good results..
Right on Bruce. My problem is time, I work a day job then come
home and work in my shop for 3-4 hrs. I have to do my dyno
testing on Saturday mornings b/c I don't want the gestapo to
come round hassling me. (My shop is at my h0use)

Next to the flowbench, that dyno is the best thing I ever got. If
I could get over the hump and be able to stay busy there, I'd quit
the day job and just do cylinder head work!

Not quite there yet, but I'm trying.
 

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Dynos rule!

Keep using that dyno.. It will give you good results..
Right on Bruce. My problem is time, I work a day job then come
home and work in my shop for 3-4 hrs. I have to do my dyno
testing on Saturday mornings b/c I don't want the gestapo to
come round hassling me. (My shop is at my house)

Next to the flowbench, that dyno is the best thing I ever got. If
I could get over the hump and be able to stay busy there, I'd quit
the day job and just do cylinder head work!

Not quite there yet, but I'm trying.
 
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