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Anyone with SE 203's cams in TC88, MPG question

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Old Apr 13, 2012 | 08:31 PM
  #1  
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Default Anyone with SE 203's cams in TC88, MPG question

Prior to cam install this winter I was running SE intake, slip on's and stage one download. Now, with all of that still I installed a set of SE 203's. Bike runs great but I have gone from low 40's to 32 mpg.

I figured I was going to have some loss in mileage but that seems a bit extreme. Sucks to have to stop every 150 miles to fuel up especially since I have some long trips planned this summer.

Just wondered if anyone has the 203's and what they are getting?

Thanks.......
 
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Old Apr 13, 2012 | 09:03 PM
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What are you doing for a fuel map? Are you still on a stage one download? You should be on the stage two map at least.
 

Last edited by Mike; Apr 13, 2012 at 09:05 PM.
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Old Apr 13, 2012 | 10:03 PM
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I'm getting 33-35 mpg depending on how hard I hit it
 
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Old Apr 13, 2012 | 11:15 PM
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A proper tune should get you at least as good of MPG as you had before. Quality of fuel will affect it too. I installed Andrews 48h cams in my 2010 Ultra, 96 CI. It was stage 1 with SEPRT. I went with TTS & hauled it to Docs Performance Tuning in Mineola Fla for a dyno tune. We drove almost 1000 miles round trip to get him to tune it, no other reason for going there. I was getting 38 to 40 MPG before all the work. Bike runs like a totally different bike now, pulls very hard! I got 43 MPG on a Cherohala Skyway ride this week, running BP 93 octane. Its all in the tune bro.
 
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Old Apr 13, 2012 | 11:17 PM
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Originally Posted by DHubbs
A proper tune should get you at least as good of MPG as you had before. Quality of fuel will affect it too. I installed Andrews 48h cams in my 2010 Ultra, 96 CI. It was stage 1 with SEPRT. I went with TTS & hauled it to Docs Performance Tuning in Mineola Fla for a dyno tune. We drove almost 1000 miles round trip to get him to tune it, no other reason for going there. I was getting 38 to 40 MPG before all the work. Bike runs like a totally different bike now, pulls very hard! I got 43 MPG on a Cherohala Skyway ride this week, running BP 93 octane. Its all in the tune bro.
I forgot to mention, this Cherohala trip was ridding 2 up!
 
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Old Apr 13, 2012 | 11:20 PM
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My 95" Big Bore Stage II with 203's got 46 mpg. ( The same as my new Andrews 26 G's.)

I'd check your tuner.
 
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Old Apr 14, 2012 | 07:44 AM
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Thanks, only tune I had was stage 1 download and that was prior to cam swap.
 
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Old Apr 14, 2012 | 07:52 AM
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Although my '99 TC88 had a Carb, I first had the SE intake, and SE Slip ons. Then after 2 years installed the SE203 cams when replacing the cam bearings - mileage after the cam install was the same as before. Since everything you listed is MoCo, dealer will have proper download for the combination.
 
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Old Apr 14, 2012 | 08:05 AM
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My old '02 RK 95" 203 cams, Rineharts, & powercommander used to average 42 all the time.
 
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Old Apr 14, 2012 | 08:19 AM
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Wait for warmer weather. I put 555's in and the mileage sucked. I took it out yesterday afternoon when it was a lot warmer and picked up 5 mpg. Winter mileage sucks.
 
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