Stage 1 Big Twin vs. Stage 1 Sportster 1200 HP & TQ
#1
01-29-2007, 11:37 PM
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Stage 1 Big Twin vs. Stage 1 Sportster 1200 HP & TQ
I have a question for many of you big twin owners that are in the know. I just upgraded my EFI 1200 Sporty with stage 1 A/C, V&H Straight Shots, and had the dealer flash the bike with a HD reMap. As luck had it, I ended up with some decent 79HP/79Ft-lb results. I know many others are having a hard time hitting these numbers with other 1200's that used SERT's and Fuelers, and wondered if you guys with the Big Twins see the same issues;
A: Are big twins having the same issues with Stage 1 ReMaps vs. SERT/F settings where the latter is harder to obtain results from?
B: What kind of HP/TQ is typical from Big Twin 88ci and Big Twin 96ci bikes with Stage 1 upgrades?
Would like to see what correlation there is between these parameters, and if 1200cc bikes make as much power as the Big Twin 88/96 bikes? Thanks folks.
A: Are big twins having the same issues with Stage 1 ReMaps vs. SERT/F settings where the latter is harder to obtain results from?
B: What kind of HP/TQ is typical from Big Twin 88ci and Big Twin 96ci bikes with Stage 1 upgrades?
Would like to see what correlation there is between these parameters, and if 1200cc bikes make as much power as the Big Twin 88/96 bikes? Thanks folks.
#2
01-29-2007, 11:50 PM
RE: Stage 1 Big Twin vs. Stage 1 Sportster 1200 HP & TQ
Sporty's always were the hot rod's of the Harley world. I think I'm running about average with my 05 Springer Classic on a Stage 1 SERT at around 70hp. & 77ft. lbs.
#3
01-29-2007, 11:57 PM
Ultimate HDF Member
RE: Stage 1 Big Twin vs. Stage 1 Sportster 1200 HP & TQ
It's really hard to come up with an "average dyno figure", as it is so dependent on the tuner, and how well they dial in the bike.
The 1200 Sportsters can make good numbers, but from the figures I've seen over on the Sportster Forum the numbers vary as well.
One dyno chart for a 2004 1200 shows a maximum of 72 HP and 77 TQ.
Another 2004 1200 dyno chart shows 81 HP and 82 TQ with nothing more than a SE air cleaner, slip-on mufflers, and rejetting.
Different dyno's (or 'adjusted figures') might show different results, depending on how many pulls were made and other factors.
Sometimes you just get lucky and have a bike with an engine that was factory assembled "just right", and then find a tuner that knows what they are doing.
My 2003 FatBoy showed a 'best figure' of 79 HP at 5,500 RPM and 84 TQ at 3,750 RPM with an A/F ratio of 13.1. Nothing really special about the bike, and all it has is the Stage 1, original non-crossover 80354 SE2 baloney mufflers, and SERT.
But I'm sure that if it was put on another dyno, and a different tuner set it up, the figures could vary greatly.
The 1200 Sportsters can make good numbers, but from the figures I've seen over on the Sportster Forum the numbers vary as well.
One dyno chart for a 2004 1200 shows a maximum of 72 HP and 77 TQ.
Another 2004 1200 dyno chart shows 81 HP and 82 TQ with nothing more than a SE air cleaner, slip-on mufflers, and rejetting.
Different dyno's (or 'adjusted figures') might show different results, depending on how many pulls were made and other factors.
Sometimes you just get lucky and have a bike with an engine that was factory assembled "just right", and then find a tuner that knows what they are doing.
My 2003 FatBoy showed a 'best figure' of 79 HP at 5,500 RPM and 84 TQ at 3,750 RPM with an A/F ratio of 13.1. Nothing really special about the bike, and all it has is the Stage 1, original non-crossover 80354 SE2 baloney mufflers, and SERT.
But I'm sure that if it was put on another dyno, and a different tuner set it up, the figures could vary greatly.
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