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Daytona Twin Tec Twin Tuner II EFI Fuel & Ignition Controller

(7 reviews)

Item: 384044

$282.95 – $372.95

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Daytona Twin Tec Twin Tuner II EFI Fuel & Ignition Controller

  • Twin Tuner II has all the features of the original Twin Tuner and also includes ignition timing control capability
  • Easily adjusts the OEM Delphi fuel-injection and ignition to match the requirements of performance parts including high-compression pistons/heads, camshafts, free-flowing exhausts, and low-restriction air filters add 30% or subtract 20% fuel and retard spark timing up to 10 Degree
  • You can use the mode and up/down push button switches to make fuel trim adjustments in the rpm and throttle position ranges required by most applications; the fuel trim value is displayed on a bright daylight readable LED display
  • The Twin Tuner also has an advanced mode, using the optional USB Interface and PC Link Tuner software to make precise fuel adjustments and allows independent adjustments to the front and rear cylinders
  • May be compatible with other controller maps
  • Easy plug-in installation and setup, with no splicing, cutting, crimping or bulky interconnections
  • Compact size only 4" long x 2" wide x 1/2" tall
  • Compatible with Twin Scan II+ Tuning Aid install the Twin Scan II+ and ride the bike, then copy the air/fuel ratio corrections calculated by the Twin Scan II+ into the PC Link Tuner software
  • Made in the USA
Specification Details
CARB Approved No
Country of Origin USA
EFI Type Delphi
Engine Type Varies (make selection above)
Warranty 3 Year Manufacturer Warranty

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Harley Davidson
  • FLD Dyna Switchback 2014-2016
  • FLDE Softail Deluxe 2018-2020
  • FLFB Softail Fat Boy 2018-2019
  • FLFBS Softail Fat Boy 114 2018-2020
  • FLHC Softail Heritage Classic 2018-2020
  • FLHCS Softail Heritage Classic 114 2018-2020
  • FLHR Road King 2007-2013
  • FLHRC Road King Classic 2007-2013
  • FLHRCI Road King Classic 2002-2006
  • FLHRI Road King 2002-2006
  • FLHRS Road King Custom 2007
  • FLHRSI Road King Custom 2004-2006
  • FLHT Electra Glide Standard 2007-2009
  • FLHTC Electra Glide Classic 2007-2013
  • FLHTCI Electra Glide Classic 2002-2006
  • FLHTCU Ultra Classic Electra Glide 2007-2013
  • FLHTCUI Ultra Classic Electra Glide 2002-2006
  • FLHTCUTG Tri Glide Ultra Classic 2009-2013
  • FLHTI Electra Glide Standard 2003-2006
  • FLHTK Electra Glide Ultra Limited 2010-2013
  • FLHX Street Glide 2008-2013
  • FLHXI Street Glide 2006
  • FLHXXX Street Glide Trike 2010-2011
  • FLS Softail Slim 2012-2017
  • FLSB Softail Sport Glide 2018-2020
  • FLSL Softail Slim 2018-2020
  • FLSS Softail Slim S 2016-2017
  • FLSTC Heritage Softail Classic 2007-2017
  • FLSTCI Heritage Softail Classic 2001-2006
  • FLSTF Softail Fat Boy 2007-2017
  • FLSTFB Softail Fat Boy Lo 2010-2016
  • FLSTFBS Softail Fat Boy S 2016-2017
  • FLSTFI Softail Fat Boy 2001-2006
  • FLSTI Heritage Softail 2006
  • FLSTN Softail Deluxe 2007-2017
  • FLSTNI Softail Deluxe 2005-2006
  • FLSTSB Softail Cross Bones 2008-2011
  • FLSTSC Softail Springer Classic 2007
  • FLSTSCI Softail Springer Classic 2005-2006
  • FLSTSI Heritage Springer Softail 2001-2003
  • FLTR Road Glide 2007-2009
  • FLTRI Road Glide 2002-2006
  • FLTRU Road Glide Ultra 2011-2013
  • FLTRX Road Glide Custom 2010-2013
  • FXBB Softail Street Bob 2018-2020
  • FXBR Softail Breakout 2018-2019
  • FXBRS Softail Breakout 114 2018-2020
  • FXCW Softail Rocker 2008-2009
  • FXCWC Softail Rocker C 2008-2011
  • FXD Dyna Super Glide 2007-2010
  • FXDB Dyna Street Bob 2007-2011, 2014-2017
  • FXDBC Dyna Street Bob Limited 2016
  • FXDBI Dyna Street Bob 2006
  • FXDBP Dyna Street Bob 2016
  • FXDBP Dyna Street Bob Custom 2014
  • FXDC Dyna Super Glide Custom 2007-2011, 2014
  • FXDCI Dyna Super Glide Custom 2005-2006
  • FXDF Dyna Fat Bob 2008-2011, 2014-2017
  • FXDI Dyna Super Glide 2004-2006
  • FXDI35 35th Anniversary Dyna Super Glide 2006
  • FXDL Dyna Low Rider 2007-2009, 2014-2017
  • FXDLI Dyna Low Rider 2004-2006
  • FXDLS Dyna Low Rider S 2016-2017
  • FXDR Softail 114 2019-2020
  • FXDWG Dyna Wide Glide 2007-2008, 2010-2011, 2014-2017
  • FXDWGI Dyna Wide Glide 2004-2006
  • FXDXI Dyna Super Glide Sport 2004-2005
  • FXFB Softail Fat Bob 2018-2019
  • FXFBS Softail Fat Bob 114 2018-2020
  • FXLR Softail Low Rider 2018-2020
  • FXLRS Softail Low Rider S 2020
  • FXS Softail Blackline 2011-2013
  • FXSB Softail Breakout 2013-2017
  • FXST Softail Standard 2007-2009, 2020
  • FXSTB Softail Night Train 2007-2009
  • FXSTBI Softail Night Train 2001-2006
  • FXSTC Softail Custom 2007-2010
  • FXSTD Softail Deuce 2007
  • FXSTDI Softail Deuce 2001-2006
  • FXSTI Softail Standard 2001-2006
  • FXSTSI Springer Softail 2001-2006
  • XL1200C Sportster 1200 Custom 2007-2013
  • XL1200L Sportster 1200 Low 2007-2011
  • XL1200N Sportster 1200 Nightster 2007-2012
  • XL1200R Sportster 1200 Roadster 2007-2008
  • XL1200V Sportster Seventy-Two 2012-2013
  • XL1200X Sportster Forty-Eight 2010-2013
  • XL50 50th Anniversary Sportster 2007
  • XL883 Sportster 883 2007-2009
  • XL883C Sportster 883 Custom 2007-2010
  • XL883L Sportster 883 Low 2007-2010
  • XL883L Sportster SuperLow 2011-2013
  • XL883N Sportster Iron 883 2009-2013
  • XL883R Sportster 883R 2007-2010
  • XL883R Sportster Roadster 2011-2013

Customer Reviews

Easier than carbureted

By William A. on  Verified Purchaser

I found the Daytona Twin Tec Tuner to be easy installation as long as you follow the instructions. Having been an automotive technician for many years then switching career paths to computers and Electronics. This device was not difficult to install. The only thing I would recommend as you remove each of the wires from the ECM Connector put them right into the Deutsch plug while you have that wire in your hand. This will help avoiding making a mistake. This is just my opinion. Other than that I found the instruction to be very good. After the installation setting the initial setup and making adjustments to the settings is easier than changing jets in a carbureted engine

Very useable wide range of settings

By Ricky G. on  Verified Purchaser

So far so good. Seems of good quality. Install was not very bad at all old twisted stiff wires had to be gentle but got it done. Have played with tune and has relieved that lean cough. Still playing with it for mire fine tuning.

Twin tec ll 07 Street glide

By Victoria cycles on 

Was cautious about this purchase not making a difference on my bike. Easy install, and this tuner will bring your bike alive. So many changes right away and I can feel the minor horse power gain. Great purchase for the money!

Recommend tuner

By James P. on  Verified Purchaser

Was very impressed with this less expensive little box. No more spark knock and I'm no longer running lean.

Great tuner for all 36 pin Delphi H-D ECMs

By Darrell W. on  Verified Purchaser

Good instructions, easy to wire-in. Excellent customer support from Daytona Twin Tec. I set recommended programming from included chart and solved my lean condition. After I install the S&S 509 cams I'll take her to The Dyno guys for a tune. Well worth the money & time. Great alternative to more expensive tuners. Will work on any Harley Davidson 36 pin Delphi ECM. Tuning accessories available to tune yourself. 2002 Softail Deuce EFI

Twin tech 2

By Bobby A. on  Verified Purchaser

I ordered the daytona twin tech 2 not realizing I couldn't use it. I already have a power vision 4 on my bike.

Power Upgrade

By Jay C. on  Verified Purchaser

Super easy to install with great instructions. Cleared up all the issues I had with my 2005 Road King after my 103 inch upgrade to my twin cam. Running like a dream. Parts Giant has the right parts for the right price.

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Questions & Answers

I just rebuilt my twim cam 2002,upgraded the cams to a 510 lift gear drive system,upgraded my air intake and baffles out of pipes. Now starts good idles good but when cruising at mid rpm it wants to miss and backfire when i crack the throtle. Seems like its slow on time. do you think a tuner would help?

By Anon.

And exhaust seems like its 20% louder than it was before. Baffles were out then also.

In a word, yes - this will certainly solve your problem. Making the myriad of changes you've listed will cause a bike to fall on its face when you ask for power. This tuner, properly configured, will not only solve that miss, but also, give you better throttle response and more power throughout the RPM range. Plus, if you make any other engine or exhaust changes in the future, it's more than up to the task of handling those modifications as well. It's a really nice tuner.

By Tom

popping/ rich

By Al showcase

I have a 2 into one and a S &S Breather on a stock engine will this help lean it out ? I get a lot of pops on decel or off throttle at speed. also plugs are a bit black seems rich 2002 Electra glide TC 88 FI

It might help, properly configured of course, but before you go down this road, have you checked that everything on your engine is sealed up? Specifically, make sure that the air cleaner, manifold and all exhaust gaskets are in good shape. If there's any chance of air getting in through those areas, you're more likely to encounter backfiring as fresh air leaks into the engine from various places. Considering the age of your bike, an old gasket might be the real culprit!

By Tom

2006 Harley springer Efi

By Manuel M.

Will this work with my bike using Vance and Hines staggered long exhaust and does it have options on exhaust types

Yes, this would be a very useful tuner to work with your bike's particular set, and especially, as it evolves over time.

By Tom

Is this tuner what they consider a "fooler" or is it actually making the effective changes?

By Pops

I'm not sure what your definition of fooler happens to be, so I can't comment on that. I can tell you that this particular device plugs in-between components such as the ECU/fuel injector(s), ignition &etc. (which, exactly, depends on what bike you have) and modifies the incoming or outgoing signal to enhance engine performance. The Power Commander works in much the same way. Other than that, pretty much every fuel tuner on the market works in this way. There are those that flash/reprogram new settings over to the ECU or completely replace said ECU, The Vance & Hines Fuelpak FP4 is an example of the former, while the Thunder Heart ThunderMax ECM with Integral Auto Tune System. Back to the Twin Tuner in question, this device - when configured correctly, has been proven to be an effective fuel tuner for a wide range of applications: aftermarket exhausts, air intakes and cams are well within the purview of this tuner.

By Tom

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