Red Curves - Stock Header (port matched) + DG-R Cost: $150.00

Blue Curves - Full FMF, Megabomb + Power Core 4 Cost: $530.00

Test Notes:

The Kustom Kraft Dynojet chart for a stock KLX is a complete Dynojet chart that looks valid. ( http://api.viglink.com/api/click?for...rt_6_22_11.pdf ) It shows the stock KLX at 16.51 hp and 11.69 ft/lbs torque.

DynoJet Dyno, roll-on, runs, SAE CF (which corrects for air temp, humidity, altitude, and engine temp.) Bike was run hot with no tricks to inflate numbers. Runs were only minutes apart -( I changed exhaust systems with welders gloves.) The full FMF system was run first.


Setup notes :

Please see my signature line for the modification status of my bike.

The AFR's are finally within reasonable tolerance for max power production. It took the #132 jet and raising the needle one notch (1 notch lower clip position on the needle ) above Stage 2 instructions to finally stop the bike from running too lean.




Let the analysis begin !

 

For trail riding, I like the red one... and it's 'more economical'!

 

I completely agree - for trail riding, surely Red wins...?

 

So, I'm studying the charts myself.. The stupid simple math - easily repeatable even while snot-slinging drunk - is that the FMF lost about .45 lbft of torque and gained about 1.20 HP over the stock header+DG-R. When drunk, that'll change to 1/2 lb ft and 1 1/4 hp...

FMF has an inferior Trq curve below 6500 rpm - a superior Trq curve above 6500.

 

But when you drop into the valley and the trail is littered with whoops your gonna want the extra 500 rpms to float the front end down the wash

 

Absolutely right ! The stock+DG-R would let you down , down there. lol

 

Check out how that Red Trq dip - starting at 4900 rpm - coincides precisely with a lean-out "bulge" in Red AFR.

If I could only determine how to stop that lean "bulge" , the Trq curve would certainly go even more in the DG-R favor.

 

Check out Blue @ 8500 rpm... dip in power and a lean bulge there as well.

 

How many runs of each configuration did you do?

 

He did three pulls on each configuration. So the two runs consisted of a total of 6 pulls.