Ok I had my bike dyno tuned this week at an HD dealer. There Dyno does not have a break on it, but they use a exhaust gas meter for the A/F. My bike is a 2007 XL50 1200 stock engine with SE Stage I AC kit, SE 10mm plug wires, Martin Bros Two Down pipes and a PC III USB. Well they got the A/F super good and the print out said it made just about 68HP and 71 TQ at the rear tire. So I know that is over stock and the guys at the dealer said a stock 1200 makes about 55 hp at the rear so they said it was good numbers for just bolt on's. What do you guys think? I know the bike pulls alot hader and runs alot better then it did last year with the stock AC, SE slip on's and HD download.

 

My son rides a 2004 XL1200C. With a Hypercharger, Cycle Shack slip-ons and a carb rejet he's at 74 hp and 79 ft/lbs of torque. Not saying one is good and one is not good, just throwing this out there as a point of reference.

 

Well like I said the dyno did not have a brake in it so there was really no load on the engine like there would be on the road, but for $80.00 flat fee I'm happy. everyone else wanted $200-300 for a tune around here. I was not after max power for the tune-i just wanted the bike to run correct with my mods.

Sounds like your son has a runing there.

 

There are a lot of different ways to 'doctor' the figures you get on a dyna run, and the same bike might have completely readings depending on the dyno used.

A good friend of mine does the dyno tunes at a major dealership and he has told me that a 'stock' 1200 will put out around 62 to 65 hp to the rear wheel, and up to 75 hp to the rear wheel after opening up the intake/exhaust and a good dyno tune. (What is now known as a good Stage 1 upgrade and tune).

He did the work on my 1200C (minor head work, Screamin' Eagle "E" cams, jetting, etc.) and it's putting out around 85 hp to the rear wheel.

He also did the work on my WideGlide which produces right at 96 hp to the rear wheel and 102 pounds of torque.

Of course you can use 'non-corrected' dyno figures to 'fudge' the results if you are looking for nothing more than unrealistic "bragging right" figures..

But I am a little surprised at the 'guys at the dealership' that said a stock 1200 only produces around 55 hp to the rear wheel. From everything I've heard that sounds to be a very low figure.

 

Here is mine on my 09 Nightster with V&H ShortShots, SE Heavy Breather and a SE Pro SuperTuner. 83.21HP/81.40TQ

 

Two points: 55 hp is a little low for a bone stock fi 1200. 60 - 61 hp seems to be a better number. That said, a 1200 with stage 1, SEST, properly dynoed will get you to 80 hp. My '08 N'ster dynoed at 81 hp and 78 tq, very similar to the previous post.

Stage 1, tuner, and a dyno might get you to 71 hp on a 96.

Lastly..."screamin eagle tastes like chicken"

Bwana

 

I like me screamin eagle country fried.

 

I agree about the 55 hp number being very low. I had my bike on a Dyno at a local Indy. He just wanted to get a bike on the Dyno during an open house Christmas party. He didn't do any work to it, but it was showing 52 hp. That was when it was still an 883 with stage 1 and tuned by myself.

I think if you pay $80 for a Dyno, that will usually run around $200 - $400...well, ya get what you pay for.

 

As said 55 is low, hell I have almost twice that.

 

Getting 1 hp & 1 ft-lb torque per ci of engine is normal for a non-epa evo style engine.