J32A3-A8 V-tec engagement?

Thread Tools
 
Search this Thread
 
Old 07-06-2012, 01:54 PM
  #1  
9th Gear
Thread Starter
 
DSF UA6-7 SQUADRON's Avatar
 
Join Date: Jun 2012
Location: oklahoma
Age: 31
Posts: 9
Received 1 Like on 1 Post
J32A3-A8 V-tec engagement?

Has anyone lowered the vtec engagement for j32 or j35 ? If so any positive feedback with doing this?
Old 07-06-2012, 02:04 PM
  #2  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
we never really had a viable tuning option, until just recently.

what we have found is that lowering the vtec engagement point, makes the torque band curvey.
you want a straight solid torque band.

with the j32 engine, the engagement point is set at 4700RPM
we have found if you push it up to 5k, you will get a nice straight torque band!

Acura realized this and increased the engagement point in the j35's at; you guessed it 5k RPM
Old 07-06-2012, 02:11 PM
  #3  
9th Gear
Thread Starter
 
DSF UA6-7 SQUADRON's Avatar
 
Join Date: Jun 2012
Location: oklahoma
Age: 31
Posts: 9
Received 1 Like on 1 Post
thanks for the info and how could i come by doing this jandr ecu? hondata maybe i saw on thier site that they had one but ive never heard of anyone running hondata on j32a3 or j35a8's
Old 07-06-2012, 02:14 PM
  #4  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
the only viable option is the J&R ECU
Old 07-06-2012, 02:14 PM
  #5  
JJH
Drifting
iTrader: (1)
 
JJH's Avatar
 
Join Date: Jan 2012
Age: 34
Posts: 2,094
Received 352 Likes on 254 Posts
Originally Posted by justnspace
we never really had a viable tuning option, until just recently.

what we have found is that lowering the vtec engagement point, makes the torque band curvey.
you want a straight solid torque band.

with the j32 engine, the engagement point is set at 4700RPM
we have found if you push it up to 5k, you will get a nice straight torque band!

Acura realized this and increased the engagement point in the j35's at; you guessed it 5k RPM
The 4th gen TL's have a j35, right?
Old 07-06-2012, 02:18 PM
  #6  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
^yes, J35's and J37's
The following 2 users liked this post by justnspace:
DSF UA6-7 SQUADRON (07-06-2012), JJH (07-06-2012)
Old 07-06-2012, 02:26 PM
  #7  
JJH
Drifting
iTrader: (1)
 
JJH's Avatar
 
Join Date: Jan 2012
Age: 34
Posts: 2,094
Received 352 Likes on 254 Posts
Originally Posted by justnspace
^yes, J35's and J37's
I had a 2012 sh-awd loaner last week. I had wondered how it felt like it had so much more on the highway at cruising speeds than my type-s taking extra drive train loss through AWD and heavier car into account. Makes sense knowing that it has a straight torque curve.
Old 07-06-2012, 02:28 PM
  #8  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
^the SH-AWD's are the 3.7 J37 motors. pumping out 300hp at the crank
Old 07-06-2012, 02:30 PM
  #9  
JJH
Drifting
iTrader: (1)
 
JJH's Avatar
 
Join Date: Jan 2012
Age: 34
Posts: 2,094
Received 352 Likes on 254 Posts
Originally Posted by justnspace
^the SH-AWD's are the 3.7 J37 motors. pumping out 300hp at the crank
I haven't looked at a dyno yet but I would imagine that it is putting very similar numbers to the ground as a type-s does. AWD would cause extra drive train loss, correct?
The following users liked this post:
justnspace (07-06-2012)
Old 07-06-2012, 02:32 PM
  #10  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
^yeah, putting both cars at around the same wheel hp.

Dont forget that the 4G is a little heavier.
and with six speeds, the 4G has better gearing than your 5at type-s


I know my 06 6MT can take a '12 shawd auto
Old 07-06-2012, 02:37 PM
  #11  
Where Did My Garage Go?!!
iTrader: (3)
 
lucnex's Avatar
 
Join Date: Jul 2008
Location: Chicago, IL
Age: 35
Posts: 825
Received 75 Likes on 48 Posts
^ Liar
Old 07-06-2012, 02:40 PM
  #12  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
okay, i did lie.

butt, they are heavy and and and
Old 07-06-2012, 02:47 PM
  #13  
JJH
Drifting
iTrader: (1)
 
JJH's Avatar
 
Join Date: Jan 2012
Age: 34
Posts: 2,094
Received 352 Likes on 254 Posts
Acura has went up .2 liters for each generation of TL. So the real question is, does Acura continue this trend into their 5th get TLs or do they drop the displacement or leave it wheres it's at and do we get a turbo?
Old 07-08-2012, 08:46 PM
  #14  
Series Motor's
 
TrustinHFDJ's Avatar
 
Join Date: Jun 2012
Location: Los Angeles
Posts: 160
Received 12 Likes on 12 Posts
Originally Posted by JJH
The 4th gen TL's have a j35, right?
type s as well.


From what I understand you cannot remove the stock ECU without causing the tech to fail, if you drive a type s or have the navi package. If that is not importance to you than you might as well. You run a second ecu with the main one. OTHERWISE PLEASE VOID THIS MESSAGE or inform me of something good!
Old 07-09-2012, 08:09 AM
  #15  
Moderator
iTrader: (1)
 
justnspace's Avatar
 
Join Date: Feb 2010
Posts: 86,295
Received 16,265 Likes on 11,974 Posts
Originally Posted by JJH
Acura has went up .2 liters for each generation of TL. So the real question is, does Acura continue this trend into their 5th get TLs or do they drop the displacement or leave it wheres it's at and do we get a turbo?
why you asking us!?
lol

Acura will remain "smart luxury" which means they are focused on gas mileage and trying different technologies such as the rear independent motors that are going to be found in the new RLX and NSX.
Old 07-09-2012, 09:01 AM
  #16  
Burning Brakes
 
bouncer07's Avatar
 
Join Date: Aug 2011
Location: Minnesota
Posts: 1,150
Likes: 0
Received 182 Likes on 140 Posts
JUSTIN nailed this. This motor is not like K20's when lowering the vtec you'll get more power. - But simuliar since this motor was built on the K20's simularity only more TQ and down to SOHC. Getting the VTEC point right and the settings the cam angles at the cross-over right is very important and one of the most difficult tuning tasks. If not done right, the curve is bumpy and performance suffers. Which was done when lowering the vtec. Rodney upped the vtec to 5K on J32. What the J32 suffer from stock is when the angle of the cam needs to be rotate a lot, this result in a power dip for a hundred rpm after Vtec while the cam rotates into proper position. If Vtec is set properly, the VTEC noise is reduced; the difference in noise is because when Vtec enganges, you're running a different engine. For me, I like to sacrifice a bit of power before the Vtec point to gain it back and more after Vtec.
The following users liked this post:
justnspace (07-09-2012)
Old 07-14-2012, 08:10 PM
  #17  
Series Motor's
 
TrustinHFDJ's Avatar
 
Join Date: Jun 2012
Location: Los Angeles
Posts: 160
Received 12 Likes on 12 Posts
Originally Posted by JJH
Acura has went up .2 liters for each generation of TL. So the real question is, does Acura continue this trend into their 5th get TLs or do they drop the displacement or leave it wheres it's at and do we get a turbo?
Yes indeed Justn has it right on the mark. What you are saying is all correct but we are yet to see. As did the 3rd gen base vs s with .3 boost, I have yet to see what will happen when in doubt the 4th Gen type S is released. From my knowledge, but probably will not happen, is that it should easily go to the old NSX 3.9 Liters from the base 3.7. For the most power, I believe they may and make it ULEV.

As Justn said, the NSX went to a 3.6 from 3.9, which is quite crazy, dont you think? but with high-comp technology, proper stoichmetry, we can have a motor tuned to perform insanely.

I do not wish to hold this true, but most likely it is, for a 1.0 L/100hp without anything but proper tune. So HP wise there is no problem, it is all about creating the torque.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Pham Alvan
2G TL (1999-2003)
38
03-16-2016 09:17 AM
knight rider
Car Talk
9
03-04-2016 08:59 AM
joflewbyu2
5G TLX (2015-2020)
139
10-08-2015 11:16 AM
lovic87
3G TL Problems & Fixes
2
09-15-2015 06:07 PM



Quick Reply: J32A3-A8 V-tec engagement?



All times are GMT -5. The time now is 10:36 PM.