TTS vs Power Commander PCIII
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Novice
Joined: May 2017
Posts: 19
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From: Georgia
TTS vs Power Commander PCIII
Hey Y'all,
In 2008 Had SE 203 cams put in my 03 softail. This bike initially ran like ****. I took it to the local Boutique for a tune and was left with a dip in torque and stock numbers. After a few months I hooked up with Dr Dyno Fred Eno. He tuned my exhaust and flipped my torque curve but there is still a slight belly in the 2000-2500 rpm range. My Numbers are no better than stock Torque 78 and HP 65.
Im running PCIII, SE 203, V&H big shots and SE stage I air intake.
My fuel map on 1 cylinder has a ton on negative numbers. Even though the bike is running good since the tune in 2008, The negative fuel table and the loss of torque always ticked me off. Its a mystery I want solved.
Im in GA now and I showed my dyno sheets and fuel table to the local service tech. He swears its the PCIII causing the issue. He thinks with a TTS and re tune it will be perfect. He said the TTS can be more precise. The PCIII just fools the ECM but its not ideal.
I wanted to know what everyone thought before I embark down the rabbit hole and spend $800 dollars to improve some small amount of torque and gas mileage.
In 2008 Had SE 203 cams put in my 03 softail. This bike initially ran like ****. I took it to the local Boutique for a tune and was left with a dip in torque and stock numbers. After a few months I hooked up with Dr Dyno Fred Eno. He tuned my exhaust and flipped my torque curve but there is still a slight belly in the 2000-2500 rpm range. My Numbers are no better than stock Torque 78 and HP 65.
Im running PCIII, SE 203, V&H big shots and SE stage I air intake.
My fuel map on 1 cylinder has a ton on negative numbers. Even though the bike is running good since the tune in 2008, The negative fuel table and the loss of torque always ticked me off. Its a mystery I want solved.
Im in GA now and I showed my dyno sheets and fuel table to the local service tech. He swears its the PCIII causing the issue. He thinks with a TTS and re tune it will be perfect. He said the TTS can be more precise. The PCIII just fools the ECM but its not ideal.
I wanted to know what everyone thought before I embark down the rabbit hole and spend $800 dollars to improve some small amount of torque and gas mileage.
Stellar HDF Member
Joined: Aug 2015
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From: pensacola fl
Comparing a TTS to a PC3, there is no comparison, TTS all day.
However, whoever is tuning it has to know how to tune with it.
Don't know if your numbers will change or not. But I think you have a better chance with the TTS in the right tuners hands
However, whoever is tuning it has to know how to tune with it.
Don't know if your numbers will change or not. But I think you have a better chance with the TTS in the right tuners hands
Cruiser
Joined: Mar 2017
Posts: 248
Likes: 187
From: Central mass
Not sure on the specs of your cam but any time a longer duration cam is added it will cause less vacuum at lower rpm's, the ecm sees this through the map sensor and adds fuel, it's nothing to get ticked off about
pc3 may not be the best tuner out there but they are plenty adjustable to get most common builds dialed in.
I think your money would be better invested in head work and a big bore if that's still not enough (or when it's no longer enough) the piggy back tuner isn't your limiting factor.
pc3 may not be the best tuner out there but they are plenty adjustable to get most common builds dialed in.
I think your money would be better invested in head work and a big bore if that's still not enough (or when it's no longer enough) the piggy back tuner isn't your limiting factor.
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Novice
Joined: May 2017
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From: Georgia
I'll post my fuel table and dyno sheet so you can see what I mean.
What this dealership is saying is that the ecm performs more functions than a piggy back unit. With the TTS you are rewriting the ecm not just hijacking it. I don't know if this is true. After hours online there's not a lot of technical information on the TTS.
My big concern is that the tuner is not as good as they are telling me and he just tunes my wallet instead of the bike. It was a big ordeal to get the second tune in 2008 to make the bike run good. I rode 3 hours in heavy rain just to meet up with Fred.
As far as going big. Most of the customization happened at a time in my life when i had less overhead and had the excess cash. I want to wait till I 'have t'o rebuild the motor to sink that kind if cash into it
What this dealership is saying is that the ecm performs more functions than a piggy back unit. With the TTS you are rewriting the ecm not just hijacking it. I don't know if this is true. After hours online there's not a lot of technical information on the TTS.
My big concern is that the tuner is not as good as they are telling me and he just tunes my wallet instead of the bike. It was a big ordeal to get the second tune in 2008 to make the bike run good. I rode 3 hours in heavy rain just to meet up with Fred.
As far as going big. Most of the customization happened at a time in my life when i had less overhead and had the excess cash. I want to wait till I 'have t'o rebuild the motor to sink that kind if cash into it
Cruiser
Joined: Mar 2017
Posts: 248
Likes: 187
From: Central mass
The tts is definitely more of a capable device as are all the reprogrammers but your pc3 is plenty for your combination. I am running a pc3 on my 02 softail and I have much more aggressive cams plus head and pistons. Sure the tts can do more but at your stage it won't be a huge difference, there is more of a difference in the guys doing the tunes.
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Novice
Joined: May 2017
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From: Georgia
No I haven't. What I think is going on is, on the original tune they left the stage 2 ecm flash on and never flashed it back to stock or zero map prior to installing the PC3. This would account for having to plug inn all the negative numbers to compensate.
My other theory is I lost a lot of back pressure with my pipes. That's why there was significant improvement when the washers were added to the exhaust. I'm just not able to flip the torque curve completely. I wonder if a 2 into 1 pope would have been a better choice. I just think they're ugly
I'm picking up the bike Saturday. I needed a rear tire. My Dyno sheets are in the saddle bag ill post them.
My other theory is I lost a lot of back pressure with my pipes. That's why there was significant improvement when the washers were added to the exhaust. I'm just not able to flip the torque curve completely. I wonder if a 2 into 1 pope would have been a better choice. I just think they're ugly
I'm picking up the bike Saturday. I needed a rear tire. My Dyno sheets are in the saddle bag ill post them.
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Thread Starter
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Novice
Joined: May 2017
Posts: 19
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From: Georgia
They have baffles but added the washers to tune the exhaust. It gets more back pressure and improves torque. It's a washer welded to a bolt. Can't tune EFI or rejet a carb without tuning the exhaust. Looks like a lolipop.
Last edited by JL1103; May 25, 2017 at 01:49 PM. Reason: Add pictures
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Last edited by Max Headflow; May 25, 2017 at 04:49 PM. Reason: aftermarket