4–stroke SJ ECU and electronics mount plate alternatives

S

segmentlime

Location
near beautiful bobcaygeon
Besides either the Riva intake kit or VK Composites plate, does anyone know of any other alternatives for a mount plate for ECU and electronics that allows for elimination of air box, that doesn’t include filter or breather?
 
S

segmentlime

Location
near beautiful bobcaygeon
Yes, WORX does have an intake kit that is very similar to RIVA’s. So much so that from pictures the ECU and electronics mount plates seem to be pretty much identical.

They both however include an air filter / flame arrestor and an oil breather catch can. I was already trying the Macsboost air filter that comes with a catch can, and one option going that route is to just leave the OEM box in place to hold the ECU and electronics, but I figure if the air box is not functional then it would be nice to clean up that space. It is just that the plates seem pretty expensive for what they are.
 
S

segmentlime

Location
near beautiful bobcaygeon
I have recently swapped the stock impeller for a Solas concord 12/17 that is at 13/16 installed. I purchased a Maptuner Nano and a license to Riva’s library. I will use a pump gas tune. @tomski had advised that the main change in this would be to increase RPM limit from 8000 to 8500, and that this impeller or modifying the stock one would exploit the higher RPM and that some, likely small, performance benefit may be expected during more aggressive riding.

I have been dealing with an inguinal hernia that emerged while skiing this year and just had surgery to repair that this past weekend, so I have not had a chance to try the tune and impeller change, and probably will not for another 3 or 4 weeks.

There is not that much information about the performance benefits of a pump gas tune rev limit increase and impeller change, and I figure it will be interesting to see what I feel to get.

What have others experienced, or even just figure, to expect in this regard?


The information about changing to a different intake other than the OEM air box is even more sparse, and even with anecdotal reporting any benefits seem unclear. Of course the various vendors claim that opening up the intake is beneficial but who knows? The OEM box is pretty big and the opening to the short hose that feeds the intake is at least as big as is any of the intake kits from RIVA, WORX, or Macsboost; so I don’t know if intake air flow is any better or if it even needs to be? There seems to be some discussion that moving the oil breather to a separate can, rather than opening into the air box is beneficial but again who knows if this is true and if it really makes any difference.

What do others think could be expected, if anything, in terms of performance from one of the intake kits?

As I mentioned above, I am going to try the Macsboost kit with intake filter and catch can. I really am not expecting much, and actually hope it won’t be worse.

Similarly, and perhaps even more so, substantive information about the performance benefits of a change to a straighter / shorter exhaust hose seems even more vague than with intake changes. Yes it will change the sound but as regards performance benefits given the possible changes in back pressure with a 4-stroke, is something I know nothing about.

I am interested to hear what others know or think about these aftermarket “upgrades”.

Actually empirical data would really be great!
 
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Big Kahuna

Big Kahuna

Administrator
Location
Tuscaloosa, AL
Did you collect Data before you did these mods. RPM, Top Speed? With having these 2 data points, after you make any mods, this is when you can tell what the gains are........... Each small mod, may not do much, but when the sum are added up, you can end up with a larger overall gain.................
 
motobehrens

motobehrens

X
Location
Gilbert, AZ
segmentlime said:
I am interested to hear what others know or think about these aftermarket “upgrades”.

Actually empirical data would really be great!
Click to expand...
Exhaust kit isn't necessary. Your gains are coming from the Riva tune and an impeller pitched to hit the target rpm for that tune. The 8600 tune refers to the rpm limit and has a target of 8400. The 9000 tune has a target of 8600-8800. Check the Riva site for exact data. My opinion, the air intake system isn't necessary and I'd rather have an airbox that keeps water out.
 
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S

segmentlime

Location
near beautiful bobcaygeon
Ok, so as I mentioned above I bought a Maptuner Nano and tuning license including access to the Riva tuning libraries. I have setup the Nano tuner device and the MyAppTuner phone app, and then connected to the SJ4 ECU using the Nano ECU programming cable and added my SJ4 as a vehicle to my Maptuner account. Adding the vehicle performed all the related files syncing etc. for the SJ4, and so it is ready to program.

I have downloaded the Riva Stage 1 TR-1 8600 and Riva Stage 1 TR-1 8600 AGR. I have not flashed the ECU with either so still stock, but I can see how to do it.

I have also used the Nano for monitoring and datalogging using the TR-1 diagnostic port and the included Nano diagnostic cable. As a test, I ran the SJ4 on a hose, and I could see the live monitoring information displayed and was able to successfully create a small datalogging file, which I could view in the MyAppTuner phone app, and as well using the MegaLogViewer program after uploading the datalogger file to my desktop computer. The datalogger files are CSV format.

I do not really know anything about tuning engines, and I have no intention to modify any maps or anything like that. I do like to know how things work.

I would like to try to compare some before and after rides after installing some upgrades. I have already installed the new impeller so that shipped sailed but i thought i could try to do some captures before and after flashing a tune. Then maybe before and after each of the Macsboost intake filter, and the exhaust pipe.

It seems like a basic comparison that might be useful would simply be to know RPM and speed including at WOT.

So sorry for all the background, but finally to my question:

Does anyone have suggestions for how I can capture speed metrics, and then correlate these with the metrics captured in the Nano produced datalogger files?

I am wondering if there is some phone application that can use GPS to record speed metrics over time to a CSV format file, which i could then (perhaps manually) edit / merge with a corresponding datalogger file?

In this youTube video, it seems that both speed and RPM are displayed.


Does anyone know how these metrics were captured in order to be overlaid to the video?

What do you know about this?
 
Last edited:
Big Kahuna

Big Kahuna

Administrator
Location
Tuscaloosa, AL
segmentlime said:
Ok, so as I mentioned above I bought a Maptuner Nano and tuning license including access to the Riva tuning libraries. I have setup the Nano tuner device and the MyAppTuner phone app, and then connected to the SJ4 ECU using the Nano ECU programming cable and added my SJ4 as a vehicle to my Maptuner account. Adding the vehicle performed all the related files syncing etc. for the SJ4, and so it is ready to program.

I have downloaded the Riva Stage 1 TR-1 8600 and Riva Stage 1 TR-1 8600 AGR. I have not flashed the ECU with either so still stock, but I can see how to do it.

I have also used the Nano for monitoring and datalogging using the TR-1 diagnostic port and the included Nano diagnostic cable. As a test, I ran the SJ4 on a hose, and I could see the live monitoring information displayed and was able to successfully create a small datalogging file, which I could view in the MyAppTuner phone app, and as well using the MegaLogViewer program after uploading the datalogger file to my desktop computer. The datalogger files are CSV format.

I do not really know anything about tuning engines, and I have no intention to modify any maps or anything like that. I do like to know how things work.

I would like to try to compare some before and after rides after installing some upgrades. I have already installed the new impeller so that shipped sailed but i thought i could try to do some captures before and after flashing a tune. Then maybe before and after each of the Macsboost intake filter, and the exhaust pipe.

It seems like a basic comparison that might be useful would simply be to know RPM and speed including at WOT.

So sorry for all the background, but finally to my question:

Does anyone have suggestions for how I can capture speed metrics, and then correlate these with the metrics captured in the Nano produced datalogger files?

I am wondering if there is some phone application that can use GPS to record speed metrics over time to a CSV format file, which i could then (perhaps manually) edit / merge with a corresponding datalogger file?

In this youTube video, it seems that both speed and RPM are displayed.


Does anyone know how these metrics were captured in order to be overlaid to the video?

What do you know about this?
Click to expand...
For speed you can download Strava and run it. Or use a Garmin or Wahoo brand watch. They can record top speeds, etc etc. Also map where you rode. Screenshot_20240530_212613_Strava.jpgScreenshot_20240530_212631_Strava.jpg
 
S

segmentlime

Location
near beautiful bobcaygeon
Thank you for your replies, BK.

Sorry for these long posts. I hope at least a few here will not find them boring.

The primary reason for wanting the metrics at this time is so I can try to get an empirical understanding of exactly what are the performance implications of the aftermarket “upgrade” changes I have been making. I figure there is little doubt the impeller and tune improve performance. I am particularly interested to see what impacts to performance derive from changing the air intake (in my case to a Macsboost filter) and a more straight through exhaust. My guess at this point is that with a mild (pump gas) type tune, like what I am doing, then any benefits from these are mostly aesthetic.

I hope to examine the RPM and speed curves over the time of test runs before and after changes. That is I want to see what speeds I can do at what rpm. I hope to look at WOT and as well through the time of various accelerations.

A key thing here is that I need to be able to know what the RPM and speed values were at the same moments in time.

I will get RPM over time from the Maptuner Nano data logging function file in CSV format.

I am hoping to get speed over time also in CSV format, so that I can match / correlate the records by time.

I do have a Wahoo Elemnt Bolt device that can do similar logging to the Wahoo watch. I looked a bit into using this to get the speed records I am hoping for. The Bolt device only produces binary .fit format files, but I did find a conversion utility to convert .fit into the text based .csv format, and at first it seemed like this might work for me; however, I then found out that the Wahoo Bolt only makes one log record every second. This might be ok to compare sustained WOT sections in the test runs, but more frequent measurements of speed will be needed to look at acceleration typical of aggressive riding. By comparison, it looks like the Nano data logging function saves between 6 to 12 records to the log every second. I would like to get something closer to this frequency.

So, now I am on the hunt for iPhone app that can record speed and produce a CSV format file. I can see a few that might work but most are subscription based, and ideally I can find something that is free or reasonable one time cost or even something I can use for a month.

Any suggestions welcomed!
 
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