Group Buy for JnR ECU - Dyno's/Gains (12/23); Prices Posted (1/7)

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Old 02-08-2012 | 12:13 AM
  #1041  
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and does the cel stay on or does it only come on when u hit vtec and then eventually go away?
Old 02-08-2012 | 12:30 AM
  #1042  
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5k rpm!
Old 02-08-2012 | 02:31 AM
  #1043  
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its probably a cel for the rocker arm. I would just deal with the cel. I constantly have the cel on and it doesnt bother me. When it comes time for your inspection (if your state does a system check) just unplug the ecu, go back to stock, clear your codes and drive the car for at least 50 miles before getting the inspection so all the ready systems are functioning.
Old 02-08-2012 | 02:32 AM
  #1044  
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Originally Posted by laosthaha
and does the cel stay on or does it only come on when u hit vtec and then eventually go away?
if its for the rocker arm it will stay on until you manually clear it with a scanner or disconnect the battery
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Old 02-08-2012 | 08:26 AM
  #1045  
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5K RPM ALL THE WAY BABY! a
Old 02-08-2012 | 08:40 AM
  #1046  
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Originally Posted by swoosh
@Sonnick: yeah, i was kinda expecting that....since the cats are choking up the path, no matter how free flowing your rest of the exhaust is, it doesnt matter you see

@Fenda rolla: here they are


4th gear, stock vtec engagement, "special" PCD-Jpipe-3rd cat delete, Greddy Exhaust, AEM V2 intake, MS3 ECU:



Videos:
3rd and 4th gear run with stock vtec engagement, "special" PCD-Jpipe-3rd cat delete, Greddy Exhaust, AEM V2 intake, STOCK ECU, 93 Octane:
www.youtube.com/watch?v=9-TGcECOj_M

3rd gear run with stock vtec engagement, "special" PCD-Jpipe-3rd cat delete, Greddy Exhaust, AEM V2 intake, STOCK ECU, 108 Octane:
www.youtube.com/watch?v=H9cNJ5hg0Dg

4th gear run with stock vtec engagement, "special" PCD-Jpipe-3rd cat delete, Greddy Exhaust, AEM V2 intake, STOCK ECU, 108 Octane:
www.youtube.com/watch?v=I4IcQfeKpKY

Torque = Flat line. 4th gear. MS3. 93 Octane
www.youtube.com/watch?v=Q2BRHEAEcG4

Vtec @ 4800 rpm. 4th gear. MS3. 93 Octane - MUST WATCH
www.youtube.com/watch?v=_nUmyDtidTU

Different VTEC engagement points explained
www.youtube.com/watch?v=X2NA_OQgKeM

Graph comparisions to VTEC at 5000rpm
http://www.youtube.com/watch?v=EZfPYOmEDqg

PS: Steven Bell you have a PM to change the thread heading once again
Recap videos are here with vtec engagement points ....
Old 02-08-2012 | 08:42 AM
  #1047  
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^^ Another great testing. Smooth powerband!

What pops in my mind is if JnR is selling the ECU, this will not rob power and it should not be concerned. But it would be nice to know what the cause is.

The Ecu: I forgot to mention this but will it have Live Tuning or will we have to shut our cars down every time a map is put in durin dyno tuning?

The CEL that he's talking could be the DBW on these types of cars. But I'm not 100% sure.

Our cars love lower vtec

Last edited by bouncer07; 02-08-2012 at 08:48 AM.
Old 02-08-2012 | 08:43 AM
  #1048  
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Originally Posted by libert69
if its for the rocker arm it will stay on until you manually clear it with a scanner or disconnect the battery
If one were to change out to the type-s cams, then no CEL, correct?
because they hit vtec at 49xxRPM anyway.
Old 02-08-2012 | 09:08 AM
  #1049  
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or would you have to upgrade the rocker arm as well?
Old 02-08-2012 | 09:13 AM
  #1050  
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Base TL - stock vtec at ____ to now 5K = CEL
Type S - Stock vtec at _____ to now 4.2-4.5K = will it cause CEL?
Old 02-08-2012 | 09:31 AM
  #1051  
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Originally Posted by the fenda rolla
^^^ What kind of dip we talkin' bout here?? And what's the stock engagement point? Also, what causes the the CEL?
let me pull the dyno sheets and point it out for ya...

Originally Posted by laosthaha
is there any way we can get both? like stock vtec engagement on the ecu shipped, then be able to download it as a separate file and load it onto the ecu whenever we want to?
yes, you will be able to edit it....so you can have it at 5000rpm and then put it back to stock rpm or turn it off so the stock ECU will take care of it....
Old 02-08-2012 | 09:34 AM
  #1052  
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Originally Posted by bouncer07
^^ Another great testing. Smooth powerband!

What pops in my mind is if JnR is selling the ECU, this will not rob power and it should not be concerned. But it would be nice to know what the cause is.

The Ecu: I forgot to mention this but will it have Live Tuning or will we have to shut our cars down every time a map is put in durin dyno tuning?

The CEL that he's talking could be the DBW on these types of cars. But I'm not 100% sure.

Our cars love lower vtec
Yes the ECU does have Livetuning....so it tunes the car as you drive....

funny thing spoke about this to Rodney just yesterday....

Originally Posted by justnspace
If one were to change out to the type-s cams, then no CEL, correct?
because they hit vtec at 49xxRPM anyway.
No buddy....you will still get the CEL....

Originally Posted by bouncer07
Base TL - stock vtec at ____ to now 5K = CEL
Type S - Stock vtec at _____ to now 4.2-4.5K = will it cause CEL?
LOL it does not affect the Type S, as the vtec engagement in Type S is not gonna be changes by the ECU
Old 02-08-2012 | 09:49 AM
  #1053  
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Originally Posted by bouncer07
^^ Another great testing. Smooth powerband!

What pops in my mind is if JnR is selling the ECU, this will not rob power and it should not be concerned. But it would be nice to know what the cause is.

The Ecu: I forgot to mention this but will it have Live Tuning or will we have to shut our cars down every time a map is put in durin dyno tuning?

The CEL that he's talking could be the DBW on these types of cars. But I'm not 100% sure.

Our cars love lower vtec
Question,if our cars love lower vtec why does it make more power during higher Vtec engagement

Last edited by Joey tl; 02-08-2012 at 09:52 AM.
Old 02-08-2012 | 09:58 AM
  #1054  
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I'm leaning towards 5k vtec that's the reason why I bought this ecu to get the most out of our cars. What's the deadline swoosh
Old 02-08-2012 | 10:45 AM
  #1055  
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Originally Posted by Joey tl
Question,if our cars love lower vtec why does it make more power during higher Vtec engagement
If you had to decide on tq and hp, what would you do to get the best of both? If you can get more tq and still get the same or a bit of peak hp by lowering the vtec, it's a win win. If can get peak hp and no tq gains, it's a win loss. Hope this helps.
Old 02-08-2012 | 10:51 AM
  #1056  
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^^ Lowering the VTEC on our cars proved to be less desirable. There were dips when the IM butterflies opened up and when VTEC hit. The dips were good for easily 6-8whp/tq over a 300RPM span which, may not seem like much, but would obviously affect performance. With VTEC set at 5K, there were no dips in the powerband when the IM butterflies opened up or at VTEC, or anywhere else for that matter.
Old 02-08-2012 | 10:53 AM
  #1057  
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im assuming he didnt watch the vids
Old 02-08-2012 | 10:57 AM
  #1058  
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Another question I put in 94 octane in my car will the 93 octane tune work good with the gas in using or i have to let rodney know. if I change my vtec to 5k and there something wrong with the car I have no indication because the light is always on. That my downfall light stayin on.
Old 02-08-2012 | 11:01 AM
  #1059  
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Originally Posted by bouncer07
If you had to decide on tq and hp, what would you do to get the best of both? If you can get more tq and still get the same or a bit of peak hp by lowering the vtec, it's a win win. If can get peak hp and no tq gains, it's a win loss. Hope this helps.
Thanks.
Old 02-08-2012 | 12:13 PM
  #1060  
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I should have asked this question a long time ago...but will there be a different harness for the 03-07 Accord 6 speed?
Old 02-08-2012 | 01:12 PM
  #1061  
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Originally Posted by Sonnick
I should have asked this question a long time ago...but will there be a different harness for the 03-07 Accord 6 speed?
At a quick glance, 05 is different than 06

06 is the same as 07.
Old 02-08-2012 | 01:15 PM
  #1062  
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@Sonnick: Yes different harness and different settings....there are couple people who are interested and Rodney is testing couple Accords (in process) and will release the ECU specifically for the 03-07 and 08+ Accords

@Joey: watch the videos dude....there is no deadline as such but let me know in a week....so say Feb 15th....
Old 02-08-2012 | 01:46 PM
  #1063  
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Awesome...yea the interior/exterior is a little different of the models 05-06 models, but I believe the ECUs are the same. Of course I could be wrong.

Anxiously awaiting results from the Accord as well
Old 02-08-2012 | 01:59 PM
  #1064  
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^^^ yeah I was telling Rodney the same thing "test and expand bro".....

I think this ECU will work great on all J-series motor and more.....recently got 2 people from the TSX side who will be testing the ECU and the ECU will be available to the TSX crowd as well....
Old 02-08-2012 | 03:15 PM
  #1065  
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Originally Posted by bouncer07
Base TL - stock vtec at ____ to now 5K = CEL
Type S - Stock vtec at _____ to now 4.2-4.5K = will it cause CEL?
No issue with TypeS as from the factory Honda corrected this and set Vtec at 5k...but it would be interesting to know what exactly honda did to the ecu and find out why Vtec sets CEL on the older models and not on the TypeS.....

and basically what everyone has said watch the videos Rodney posted as the J series motors are not like the 4cyl honda motors which love lower vtec...it loves higher vtec engagement which can clearly be seen by the dyno and numbers

Originally Posted by Joey tl
Another question I put in 94 octane in my car will the 93 octane tune work good with the gas in using or i have to let rodney know. if I change my vtec to 5k and there something wrong with the car I have no indication because the light is always on. That my downfall light stayin on.
You could always buy yourself a small $30 obd code reader and just pull codes from time to time to check if you have any other codes besides the Vtec one
Old 02-08-2012 | 03:20 PM
  #1066  
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^^^ I think since the stock ECU still monitors the engine...once you hit 4700-4800 rpm and if the VTEC doesnt engage, it thinks something is messed up and raises a CEL....
Old 02-08-2012 | 03:32 PM
  #1067  
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^ yes, but with that being said I'm assuming there must be a way to trick the oem ECU with the JnR unit. no? I guess that is something for Rodney to figure out....I mean I'm wondering since OEM TypeS ecu doe not give this issue and the base does,

but well wait what about 07-08 base TL's will they also have these issues?

If that is case I'm wondering if you could run a newer style ECU on the base older models? Just brainstorming here I mean I know it will eventually be figured out....

Also curious to find out if the newer TSX's or Accord's 08+ will have this vtec engagement CEL or is it already set at the 5k like the TypeS
Old 02-08-2012 | 03:34 PM
  #1068  
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happy i have a type-s
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Old 02-08-2012 | 03:41 PM
  #1069  
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VTEC seems to be ~4900 in my Accord. It's hard to mistake the sound of the crossover. I've always thought it was identical in the TL, so I initially thought it was kind of strange to 'switch' it to 5k.
Old 02-08-2012 | 03:42 PM
  #1070  
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@Boston:

I know what you mean....am still confirming from Rodney if this problem is gonna affect the 04-06 models or all Base models....also dont know about the Accord....i bet testing will bring it out....

Lets hope Rodney finds out a way around this issue....
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Old 02-08-2012 | 03:56 PM
  #1071  
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Originally Posted by Sonnick
VTEC seems to be ~4900 in my Accord. It's hard to mistake the sound of the crossover. I've always thought it was identical in the TL, so I initially thought it was kind of strange to 'switch' it to 5k.
hmm so that is interesting your is set at 4900rpm and u have 2006, but the TL's 04-06 are set lower at 4200rpm wonder why Honda decided to change vtec points on the TL's and not the Accords!

this makes me think while they were creating these ECU's you had 3 engineers in a room of smoke and arguing at what vtec engagement is best lol!!
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Old 02-08-2012 | 04:02 PM
  #1072  
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Originally Posted by BostonSilverTypeS
hmm so that is interesting your is set at 4900rpm and u have 2006, but the TL's 04-06 are set lower at 4200rpm wonder why Honda decided to change vtec points on the TL's and not the Accords!

this makes me think while they were creating these ECU's you had 3 engineers in a room of smoke and arguing at what vtec engagement is best lol!!
I hit VTEC every couple days but si dont remember when vtec kicks in....I would say its not as low as 4200 rpm....its more like 4400 or 4700 rpm....might have to check the manual on that.....

but yeah there were 2 engineers Rodney and doc

with all the word going on that lowering VTEC is more beneficial, one of them might have said, lets higher this bishhh only to see more power LOL....
Old 02-08-2012 | 04:07 PM
  #1073  
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Originally Posted by hondanews.com
Acura VTEC™ (Variable Timing and Lift Electronic Control) gives the TL engine strong low speed torque and response coupled with abundant high rpm horsepower. The TL VTEC system has two distinct modes of operation for the engine's 12 intake valves. At low speeds, the intake valves have low lift and are open a comparatively short period of time during cylinder filling. At high rpm where breathing is critical, the valves switch to high-lift, long duration mode to deliver the best volumetric efficiency possible. The VTEC changeover point occurs at 4700 rpm, and takes just 0.1 second; it's undetectable to the driver.
.
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Old 02-08-2012 | 04:42 PM
  #1074  
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Undetectable to the driver? Poppycock.
Old 02-08-2012 | 04:55 PM
  #1075  
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Originally Posted by Sonnick
Undetectable to the driver? Poppycock.
Related reading.....

Yo, Vtak just kicked in (click here)

Old 02-08-2012 | 05:03 PM
  #1076  
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^^^ @ Tim

Thanks Justn....I knew it was somewhere in the forum but well....
Old 02-08-2012 | 05:03 PM
  #1077  
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Originally Posted by Sonnick
Undetectable to the driver? Poppycock.
Old 02-08-2012 | 06:31 PM
  #1078  
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any progress updates rodney?
Old 02-08-2012 | 06:52 PM
  #1079  
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^^^ progress updates on ???
Old 02-08-2012 | 07:50 PM
  #1080  
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well spoke to Rodney today and he was working on few more ECU's to be sent out by friday I believe...Also he finally has my ECU ready and updated so I can return his personal one back.....

And am also suppose to be getting the file needed to run the Tunerstudio software so I can start messing around with my laptop and get some datalogging info and things of that nature!! Hopefully by spring time and as weather gets better we can have several different updates and comments on how everyone is loving their new tune and ECU

So in short as a wise man said to me

'""'Be patient my young grassHOPPERR!!!""





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