Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[mczcvo]

I have a 2012 CVOSG, all stock except Rinehart TD exhaust.  Took it in for 1k mile service and had it dyno tuned.  Purchased the SERT.  Here's my concern: I'm very unhappy with the performance of the bike after it was tuned.  I experience a lot of popping and a little back-firing...worse than before.  A few times, so far, I've had hesitation/sputtering...it almost dies...when taking off from a stop light/sign.  To me this is not indicative of a good tuning.  I'm kicking myself for not researching this more prior to having it done.  My chart shows 96.82 HP and 116.22 torque.  Furthermore, another reason why I'm questioning whether or not it was done correctly is because after I got my bike home from the dyno and started cleaning it, I noticed that my end caps on my exhaust were scratched! That prompted a call to the dealership which quickly resulted in a new set of end caps.  They got scrathed from probes/sensors being placed in the exhaust while tuning.  Sooooo, if the guy tuning is that careless about the end caps, what does that say about the dyno...considering my poor performing CVO.  I would appreciate any feedback as to what I should see/expect after the dyno.  I was told the only differrence I would see is better throttle response...well, that doesn't happen when taking off!!! I do see a better response at higher RPM's (2500-3000).  Again, I don't think it was tuned correctly. 

[erniezap]

Sounds like a less than optimal tune if you are getting decel popping, hesitation, etc.  Do you have the dyno sheet showing air/fuel ratio?

[grc]

A proper tune is not just for max power and torque, it is also supposed to address driveability at all speeds and loads.  Does this place have a load cell on their dyno?  Without one, it's almost impossible to do effective and accurate tuning on a DynoJet at light throttle and light load conditions, which is where we all ride 90% of the time.  Sounds to me like you have another of those oh so common places that thinks owning a dyno and knowing how to strap the bike on the roller makes them tuners.  It doesn't.

Definitely take it back and have a chat with the boss.  If they can't do it right, ask for your money back and find a qualified tuner elsewhere.


Jerry

[Heatwave]

I have a 2012 CVOSG, all stock except Rinehart TD exhaust.  Took it in for 1k mile service and had it dyno tuned.  Purchased the SERT.  Here's my concern: I'm very unhappy with the performance of the bike after it was tuned.  I experience a lot of popping and a little back-firing...worse than before.  A few times, so far, I've had hesitation/sputtering...it almost dies...when taking off from a stop light/sign.  To me this is not indicative of a good tuning.  I'm kicking myself for not researching this more prior to having it done.  My chart shows 96.82 HP and 116.22 torque.  Furthermore, another reason why I'm questioning whether or not it was done correctly is because after I got my bike home from the dyno and started cleaning it, I noticed that my end caps on my exhaust were scratched! That prompted a call to the dealership which quickly resulted in a new set of end caps.  They got scrathed from probes/sensors being placed in the exhaust while tuning.  Sooooo, if the guy tuning is that careless about the end caps, what does that say about the dyno...considering my poor performing CVO.  I would appreciate any feedback as to what I should see/expect after the dyno.  I was told the only differrence I would see is better throttle response...well, that doesn't happen when taking off!!! I do see a better response at higher RPM's (2500-3000).  Again, I don't think it was tuned correctly. 

Definitely take it back. They clearly did a very poor tune. A good tune should result in improved take off, better low speed maneuverability for parking lots, improved acceleration and stronger top end performance. Make them take it out for a ride before you take it back and ask them if all these aspects of the tune were addressed.

[mczcvo]

Sounds like a less than optimal tune if you are getting decel popping, hesitation, etc.  Do you have the dyno sheet showing air/fuel ratio?

They only gave me one sheet, no AFR listed...

[mczcvo]

A proper tune is not just for max power and torque, it is also supposed to address driveability at all speeds and loads.  Does this place have a load cell on their dyno?  Without one, it's almost impossible to do effective and accurate tuning on a DynoJet at light throttle and light load conditions, which is where we all ride 90% of the time.  Sounds to me like you have another of those oh so common places that thinks owning a dyno and knowing how to strap the bike on the roller makes them tuners.  It doesn't.

Definitely take it back and have a chat with the boss.  If they can't do it right, ask for your money back and find a qualified tuner elsewhere.


Jerry

Thanks, Jerry! I will definitely give them a call and voice my concerns!

[mczcvo]

Definitely take it back. They clearly did a very poor tune. A good tune should result in improved take off, better low speed maneuverability for parking lots, improved acceleration and stronger top end performance. Make them take it out for a ride before you take it back and ask them if all these aspects of the tune were addressed.

Heatwave: Thanks for confirming my suspicion! My gut was telling me this can't be right.  Thanks to all for your respected feedback.

[Heatwave]

Heatwave: Thanks for confirming my suspicion! My gut was telling me this can't be right.  Thanks to all for your respected feedback.

Demand that the WOT dyno graph include an AFR graph at the bottom. Also ask them for a "cruise" dyno graph at 3000 rpms that displays both the front and rear cylinders and the AFR for both cylinders.

[Unbalanced]

MCZCVO,

To echo whats been said its on target.

Typically step runs are 5,10,15,20,25 again depending on year of bike and software there can be some inbetween this as well, most tuners go up to 30 percent then do sweep runs from there.

If they did a full tune they should be able to furnish the step sheets for both front and rear cylinders which will show you how well the bike is tuned at those percentages of throttle.

WOT is the easiest to tune.

This is how you can prove if they did the tune its also why most tunes take longer with TTS / SESPT

[steve-o]

Recently had similar problems with my 12 SEUC with SERT.... Researched different dyno tuners(people) and took the bike to a different dealer/tuner. Damn what a difference person/tuner can make. A difference of night & day... Just sayin!!!

[mczcvo]

Just a follow-up: Had the bike re-tuned by someone else and WHAT a difference!!! I'm very happy with the setup now.  More power, no hesitation, great throttle response, hardly any decel popping.  Overall the bike runs like it should!!! 

Thanks for all the feedback!

[Twolanerider]

Just a follow-up: Had the bike re-tuned by someone else and WHAT a difference!!! I'm very happy with the setup now.  More power, no hesitation, great throttle response, hardly any decel popping.  Overall the bike runs like it should!!!  

Thanks for all the feedback!

Eat the first tune or get some compensation out of the dealer that did the original poor job?

[willyB]

I can almost guarantee they stuck a canned tuned in your bike and charged you for a tune. Pretty common scam, especially for HD Dealers!

JMack at Surdyke HD in Festus, MO is one of the best tuners I've run across in my area. He tunes at all levels of revs with Max Power being second on his list of concerns.

Good Tuners =  Good Tunes