***The Official JRSC Thread*** - Page 774 - Honda-Tech - Honda Forum Discussion

***The Official JRSC Thread***

 
Old 03-06-2019, 11:20 AM
  #19326  
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Default Re: ***The Official JRSC Thread***

I haven't tried datalogging yet. I thought I had to hook up that feature by doing some extra wiring to the ECU. I just looked on Hondata's website and the video I saw doesn't mention having to do that though. I will look into doing this.

As for the AFR's during the sputter, it doesn't usually change more than a few 1/10th's, which I feel is fairly normal even with a regular idle. I'll check the vacuum during the sputter next time I drive the car.
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Old 03-06-2019, 01:41 PM
  #19327  
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Default Re: ***The Official JRSC Thread***

Originally Posted by K7-1Ktrevor View Post
I would make sure the tps is calibrated well and that it's not causing any issues, no dead spots. What are the afrs at when it starts sputtering?
x2 on TPS, check it's not a physical wiring /connection issue also. You should see erratic values on your datalog if it's giving you strife.
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Old 03-06-2019, 05:16 PM
  #19328  
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Default Re: ***The Official JRSC Thread***

I got a free B20 crv crank pulley to increase PSI just pay shipping pm me.
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Old 03-06-2019, 05:29 PM
  #19329  
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Default Re: ***The Official JRSC Thread***

Originally Posted by hondalocal View Post
Not sure if this issue is specific to my JRSC application but going to post here just in case.

I've had a random engine stutter ever since I installed my JRSC. (been 4+ years) The tuner at the time wasn't able to figure it out either, but the issue didn't affect the tuning of the car.

Basically, the car will idle fine and then randomly start to miss/stutter. The car drives fine for the most part and no issues at WOT. The main inconvenience is transitioning from deceleration to acceleration during normal driving. The throttle is a little rough and jumpy during this transition in lower gears. Not a daily driver, but the problem does make the car a bit uncivilized for "unspirited" driving.

So far I have tested the ignitor, starter, rotor, cap, plug wires, spark plugs. Everything seems to be within the tolerances specified by Honda. I was thinking about just buying a new OEM Dizzy or going COP, but would like to really get to the root of the problem first.

I uploaded a couple videos of the engine running normal and then transitioning to the sputter.

Relevant Setup Info.:
94 Integra GSR
LHT+JRSC
S300
Deatchwerks 750
E85
Walboro 400 (not hardwired)
Hondata 4 bar


Engine View
https://www.youtube.com/watch?v=HFQhzZRpzps
Exhaust View
https://www.youtube.com/watch?v=7T3Cn9v77Sg

Thanks for your replies. Any additional information can be provided.
What's your spark plug gap! you could always try and upload another base map from a friend who has a similar JRSC and see if it has anything with the tune its self. I would lean toward spark gap or like mentioned check the TPS calibration. What is the IACV on the Hondata set to?, make sure its on normal. Pull the map sensor out and check the tip for any oil contamination. When I had my LHT JRSC setup I had the LHT map sensor adaptor on the TB and used a vacuum hose from the adaptor nipple to the Map sensor. Im not sure but the map sensor location plays a role in how it runs or maybe im wrong but it could be map related. Check this link to the same thread for a pic of what im talking about, he has his map similar.

https://honda-tech.com/forums/forced...14810/page716/
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Old 03-07-2019, 09:50 AM
  #19330  
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Default Re: ***The Official JRSC Thread***

Originally Posted by shortA25 View Post


Yes the parts are related to support brackets, see picture below for specific items. If motorvations or anyone else already produces these parts please let me know as I've been searching for them with no luck.


051-108 see picture, I will see if I have the 051-422 picture

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Old 03-07-2019, 08:07 PM
  #19331  
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Default Re: ***The Official JRSC Thread***

migrod1, Motorvations has the 051-108 in stock. I am not sure if they have the 051-422, but you can call and check with Jim to see what is in stock. I know they intended to make a batch of those and the long support brackets.
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Old 03-08-2019, 01:56 PM
  #19332  
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Default Re: ***The Official JRSC Thread***

Originally Posted by JRCivic1 View Post
migrod1, Motorvations has the 051-108 in stock. I am not sure if they have the 051-422, but you can call and check with Jim to see what is in stock. I know they intended to make a batch of those and the long support brackets.
I remember years ago I ordered these very 2 parts from Moss Motors, seems most all used kits have these 2 parts missing hopefully Jim has them.
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Old 03-11-2019, 01:28 AM
  #19333  
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Default Re: ***The Official JRSC Thread***

a little update on my new build. pulled the swap from my 95 coupe and now will be starting to prepare it for my 92 hatchback






project car for the last 6.5 years

my new project car, picked it up recently from the original owner
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Old 03-11-2019, 08:58 PM
  #19334  
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Default Re: ***The Official JRSC Thread***

Originally Posted by K7-1Ktrevor View Post
I would make sure the tps is calibrated well and that it's not causing any issues, no dead spots. What are the afrs at when it starts sputtering?
Thanks for the replies everyone.

I went through the diagnostics checklist for the TPS. This is what I found on the low end.



Way off. I adjusted the TPS at closed throttle voltage to .495 and WOT 4.75. I couldn't get the WOT voltage any lower. I adjusted the throttle screw under the throttle cable assembly, but could't get it to go down to the recommended spec of 4.50.

After warming up, the car idled fine and after a few miles of mixed driving seemed to be much smoother at lower throttle. WOT was fine as well (although it is sprinkling outside so I did that with some caution)

I thought I had calibrated the TPS before, but after going through the procedure, that obviously wasn't the case. Now that I remember, I bought the 70mm TB used with the TPS sensor on it already.

You never know for sure after one drive, but I'll have a chance to put some more miles on this weekend.
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Old 03-11-2019, 11:50 PM
  #19335  
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Originally Posted by hondalocal View Post
Thanks for the replies everyone.

I went through the diagnostics checklist for the TPS. This is what I found on the low end.



Way off. I adjusted the TPS at closed throttle voltage to .495 and WOT 4.75. I couldn't get the WOT voltage any lower. I adjusted the throttle screw under the throttle cable assembly, but could't get it to go down to the recommended spec of 4.50.

After warming up, the car idled fine and after a few miles of mixed driving seemed to be much smoother at lower throttle. WOT was fine as well (although it is sprinkling outside so I did that with some caution)

I thought I had calibrated the TPS before, but after going through the procedure, that obviously wasn't the case. Now that I remember, I bought the 70mm TB used with the TPS sensor on it already.

You never know for sure after one drive, but I'll have a chance to put some more miles on this weekend.
if you have hondata you dont need to do it the old fashion way, you can calibrate it with your laptop and gas pedal super easy, i had a similar situation and i calibrated it the old way and the issue was still there until i did it through smanager.

Last edited by bigjon1378; 03-11-2019 at 11:51 PM. Reason: spelling error
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Old 03-12-2019, 11:56 AM
  #19336  
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Default Re: ***The Official JRSC Thread***

Originally Posted by bigjon1378 View Post
a little update on my new build. pulled the swap from my 95 coupe and now will be starting to prepare it for my 92 hatchback






project car for the last 6.5 years

my new project car, picked it up recently from the original owner
Nice header!!! who makes it?
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Old 03-12-2019, 01:29 PM
  #19337  
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Looks like an LHT manifold
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Old 03-12-2019, 10:47 PM
  #19338  
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Originally Posted by morepoop4u View Post
Nice header!!! who makes it?
last year i contacted 1320 to see if i could start a group buy would they start making a header similar to the kamikaze and they agreed but was never able to fill the 10 spots required for the group buy so they sold the 2 prototype headers they had made to a fellow jrsc owner who gave me one of them in exchange for some crv accessories. so this one is the only one of its kind, the other prototype is slightly different but both a relatively close the kamikaze, hytech supercharger header or LHT header design. here are a few pics of the 2 prototypes.



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Old 03-12-2019, 10:54 PM
  #19339  
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Default Re: ***The Official JRSC Thread***

Originally Posted by bigjon1378 View Post
if you have hondata you dont need to do it the old fashion way, you can calibrate it with your laptop and gas pedal super easy, i had a similar situation and i calibrated it the old way and the issue was still there until i did it through smanager.
You should really do both. First, set the "key on" TPS voltage to .492-.500v by moving the TPS sensor itself. Then, open up sManager, connect to the car and set the minimum and maximum TPS settings, upload the tune changes, save the new tune and you are done.
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Old 03-13-2019, 12:21 PM
  #19340  
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Originally Posted by JRCivic1 View Post
You should really do both. First, set the "key on" TPS voltage to .492-.500v by moving the TPS sensor itself. Then, open up sManager, connect to the car and set the minimum and maximum TPS settings, upload the tune changes, save the new tune and you are done.
That explanation makes sense. I would expect the original tuner set the map in Hondata, but when I manually clocked the TPS earlier this week, the light acceleration and normal drive ability of the car was night-and-day better.
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