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CVO Technical => Intake/Exhaust/ECM => Topic started by: BigLew on October 05, 2018, 04:31:43 PM

Title: Tuner for a 124
Post by: BigLew on October 05, 2018, 04:31:43 PM

So I have a S&S 124 HC and need a good cheap Tuner? The bike originally had a Thunder max on it with a procharger but took the blower off. Having a real bear of a time trying to use the Thunder max to tune it.

BigLew

Title: Re: Tuner for a 124
Post by: SDCVO on October 05, 2018, 11:29:26 PM

Quote from: BigLew on October 05, 2018, 04:31:43 PM

So I have a S&S 124 HC and need a good cheap Tuner? The bike originally had a Thunder max on it with a procharger but took the blower off. Having a real bear of a time trying to use the Thunder max to tune it.

BigLew

I also have a 124 HC and the difference between a ok tune and a great tune may cost a hundred or 2 but difference in performance is completely night and day. If a tuner is "great" then I doubt he will be "cheap". You spent a bunch on that motor, really trying to save a hundred or 2 on a tuner??
As always just my humble opinion.

Title: Re: Tuner for a 124
Post by: FlaHeatWave on October 06, 2018, 12:33:23 AM

I would give Zippers a call...

Title: Re: Tuner for a 124
Post by: grc on October 06, 2018, 08:40:40 AM

I'm not aware of a specific tuning device that will solve the problem.  You need to find a good tuner (human being).  You might be able to find one that will even work with a T-Max, but the odds on that seem to be very low.  Even with the so-called auto tune (which really isn't, but that's a different subject), you have to start out with a very good base map.  If Zippers doesn't have a good base map for your setup, you'll still need to hire someone to do an initial tune anyway.  Find a good tuner and discuss the best way to proceed.

JMHO - Jerry

Title: Re: Tuner for a 124
Post by: BigLew on October 06, 2018, 12:14:42 PM

What a nightmare, I’m feeling like I should have left the ProCharger on it. Now they are telling me the injectors are too big

Title: Re: Tuner for a 124
Post by: hrdtail78 on October 08, 2018, 02:47:36 PM

Get a good flash based tuner and a dyno tune and call it a day.  If your injectors allowed a smooth idle and the ECM had control even fully hot.  They should not be too big.  It would be easier with correct size but a tuner and not a program operator will have no problems.

Title: Re: Tuner for a 124
Post by: BigLew on October 08, 2018, 03:35:40 PM

They are entirely too big. Engine had a ProCharger and has much larger than needed for a naturally aspirated engine, would not even idle. It has a 60mm tb on it now with stock 103 injectors and they are better.

BigLew

Title: Re: Tuner for a 124
Post by: hd-dude on October 08, 2018, 07:59:48 PM

What size injectors were they?

Title: Re: Tuner for a 124
Post by: 98fxstc on October 08, 2018, 08:00:23 PM

I understand what Jason is saying.
If the ECM was able to control the idle and give good low speed manners then the injectors are not too big
May not have to be that big, but if they worked down low before they will work down low again

Procharger will only affect demand at upper end where the bigger injectors would certainly have been required