[home][rumors and news][model release matrix][dealer network][desktop calendar][exhaust notes][tov forums][links][search][sponsors][garage][login]

Tire Rack Upgrade Garage
 Search for a Dealer:
 Canadian Flag US Flag
 Honda Acura
 ZIP  
Acura
There are currently no active Acura promotions
Honda
There are currently no active Honda promotions
Japanese Vezel MMC hints at styling updates for coming 2019 HR-V refresh
More.......................
American Honda Reports January Sales Results
More.......................
2018 MDX gets the updated ODMD 2.0 user interface from the 2018 TLX
More.......................
Hondata releasing FlashPro for Civic Type R on March 30th!
More.......................
First impressions and some background info on the 2019 Acura RDX Prototype
More.......................
2019 Acura RDX Prototype Debuts with Evocative Styling, Higher Performance, New Tech and Luxury Appo
More.......................
Live from Detroit! 2019 Acura RDX Reveal
More.......................
Honda releases more information on the 2019 Insight
More.......................
Professional Motorsports --> Re: 2018 F1 Car Launches
Join Discussion......
Civic --> Re: Civic Type R video normal everyday driver
Join Discussion......
Today's Reading Links --> Re: 2018 Jaguar F-Type Coupe 2.0T test
Join Discussion......
Today's Reading Links --> Re: New comprehensive cradle-to-grave LCA study and economic assessment of LDV GHG reductions
Join Discussion......
Accord --> Re: Accord Auto Show Impressions
Join Discussion......
Today's Reading Links --> Lexus to Debut UX
Join Discussion......
General Talk --> Re: Car&Driver 2018 BMW M5 Review
Join Discussion......
Professional Motorsports --> Re: 2018 Honda F1 PU
Join Discussion......
General Talk --> Re: From Luxury cars to luxury TRUCKS? What happens to Acura?
Join Discussion......
Professional Motorsports --> Re: Honda PU
Join Discussion......
General Talk --> Re: 2019 Supra leaked ahead of Geneva debut!
Join Discussion......
CR-V --> Re: Europe gets CR-V Hybrid
Join Discussion......
TLX --> Re: New 2018 TLX 2.4 Tech
Join Discussion......
CR-V --> Re: No Acoustic Windshield / Solargreen?
Join Discussion......
General Talk --> Re: Drake giving away free TLX's
Join Discussion......
Jump to:
article details
Author Shawn Church
Categories Dyno Testing, Civic
Create Date August 23, 2011 15:36
Last Update August 23, 2011 16:07
2012 Si - On The Dyno

Today we got a chance to dyno our first 2012 Si. A coupe with Navi, the K24Z equipped Civic performed pretty much as expected. Below, we've posted dyno plots comparing this press fleet car with our original Project Si car as it was delivered back in late 2005.


Click to enlarge

Note that the new Si produces slightly more torque below 3000 rpm. From 3000 to 6000 rpm there is a substantial increase in torque over the old K20, as you would expect with an additional 18% displacement. However, from 6000 rpm onward, where the K20 is in VTEC, the curves are virtually identical with the K20 actually producing slightly more power at peak.

VTEC on the new Si was at approximately 5000-5200 rpm. The new car also ran extremely rich above 6000 rpm. It was probably running in cat protection mode. The old Si's would do this as well, but only after extended running. Every single run from start to finish on the new Si saw it run rich at high rpms, probably a side effect of having to deal with the close coupled catalyst and the higher exhaust gas temps (EGTs)it will see so close to the exhaust ports.

Another interesting note was that the 2012 car showed extreme variability on the dyno. Some runs produced substantially more low end torque (10-12 lbs-ft), but would fall short on the high end. Some would produce less torque below VTEC, but then produce a few more hp on the high end. Datalogging showed the car running very conservative ignition timing (on the order of 12-14 degrees where we would normally run 20-24 deg on a K20). This data indicates, to me, that there is some potential for filling out the torque curve and improving consistency. With no other changes, provided one is willing to risk long term cat problems, tuning should allow this engine to match the K20 from 6000 to 7500 rpm or so, produce a little more torque below 3000 rpm than it already is (and do so more consistently) and improve midrange output a little bit more.

reader's comments
Click Here to Submit Your Comments

Viewing Threshold (What is this?)

[fancy] [flat] [simple]
Date Thread Starter Thread
08-25-2011 03:59
Dyno it with an ECU reset in between runs   (Score: 1, Normal)
mucter
08-25-2011 11:38
Re: Dyno it with an ECU reset in between runs   (Score: 1, Normal)
notyper
08-25-2011 13:15
Re: Dyno it with an ECU reset in between runs   (Score: 1, Normal)
mucter
08-25-2011 16:09
Re: Dyno it with an ECU reset in between runs   (Score: 1, Normal)
notyper
10-28-2016 19:48
Re: Dyno it with an ECU reset in between runs   (Score: 1, Normal)
team3d
08-25-2011 16:38
faster around town?   (Score: 1, Normal)
TonyEX
08-25-2011 22:45
Re: faster around town?   (Score: 1, Normal)
RocketRon
08-25-2011 22:49
Re: faster around town?   (Score: 1, Normal)
owequitit
08-26-2011 01:50
Re: faster around town?   (Score: 1, Normal)
TonyEX
08-27-2011 13:35
Re: faster around town?   (Score: 1, Normal)
A77
08-27-2011 14:28
Re: faster around town?   (Score: 1, Normal)
TonyEX
08-27-2011 21:20
Re: faster around town?   (Score: 1, Normal)
notyper
08-27-2011 23:40
Re: faster around town?   (Score: 1, Normal)
Farage1
08-28-2011 03:21
Re: faster around town?   (Score: 1, Normal)
owequitit
08-30-2011 20:21
Re: faster around town?   (Score: 1, Normal)
sugaki
08-30-2011 23:39
Re: faster around town?   (Score: 1, Normal)
notyper
09-03-2011 00:06
Re: faster around town?   (Score: 1, Normal)
TonyEX
08-31-2011 01:06
Re: faster around town?   (Score: 1, Normal)
owequitit
09-01-2011 10:08
Re: faster around town?   (Score: 1, Normal)
jero
09-02-2011 01:42
Re: faster around town?   (Score: 1, Normal)
owequitit
09-30-2011 13:55
Re: faster around town?   (Score: 1, Normal)
6SPDTL
09-30-2011 13:48
Top speed   (Score: 1, Normal)
6SPDTL
09-30-2011 13:51
Re: Top speed   (Score: 1, Normal)
6SPDTL
09-07-2011 18:39
A question to Notyper.   (Score: 1, Normal)
CR-V9
09-04-2011 20:26
UNACCEPTABLE.   (Score: 1, Normal)
uhhhh
09-05-2011 18:33
Re: UNACCEPTABLE.   (Score: 1, Normal)
ASM FA5
08-28-2011 02:17
Shift Points: '06 Si vs. '12 Si   (Score: 1, Normal)
MojaveAccord
08-28-2011 02:44
Re: Shift Points: '06 Si vs. '12 Si   (Score: 1, Normal)
MojaveAccord
08-28-2011 03:32
Re: Shift Points: '06 Si vs. '12 Si   (Score: 1, Normal)
owequitit
08-28-2011 18:06
Re: Shift Points: '06 Si vs. '12 Si   (Score: 1, Normal)
MojaveAccord
08-28-2011 20:41
Re: Shift Points: '06 Si vs. '12 Si   (Score: 1, Normal)
owequitit
08-29-2011 11:45
Re: Shift Points: '06 Si vs. '12 Si   (Score: 1, Normal)
MojaveAccord
08-24-2011 00:19
As Expected   (Score: 1, Normal)
montechester
08-24-2011 04:15
Re: As Expected   (Score: 1, Normal)
owequitit
08-24-2011 13:16
Re: As Expected   (Score: 1, Normal)
notyper
08-24-2011 22:22
Re: As Expected   (Score: 1, Normal)
A77
08-24-2011 23:44
Re: As Expected   (Score: 1, Normal)
notyper
08-25-2011 22:27
Re: As Expected   (Score: 1, Normal)
RocketRon
08-26-2011 04:35
Re: As Expected   (Score: 1, Normal)
owequitit
08-27-2011 16:14
Re: As Expected   (Score: 1, Normal)
RocketRon
08-27-2011 18:01
Re: As Expected   (Score: 1, Normal)
owequitit
08-25-2011 21:51
TSX comparison   (Score: 1, Normal)
cyisalwayshungry
08-26-2011 04:36
Re: TSX comparison   (Score: 1, Normal)
owequitit
08-27-2011 03:38
Re: TSX comparison   (Score: 1, Normal)
owequitit
08-25-2011 16:49
Shift point? No VTEC love?   (Score: 1, Normal)
TonyEX
08-25-2011 16:51
Re: Shift point? No VTEC love?   (Score: 1, Normal)
TonyEX
08-25-2011 17:48
Re: Shift point? No VTEC love?   (Score: 1, Normal)
NealX
08-25-2011 19:16
Re: Shift point? No VTEC love?   (Score: 1, Normal)
TonyEX
08-25-2011 22:49
Re: Shift point? No VTEC love?   (Score: 1, Normal)
owequitit
08-25-2011 23:00
Re: Shift point? No VTEC love?   (Score: 1, Normal)
notyper
08-26-2011 01:36
Re: Shift point? No VTEC love?   (Score: 1, Normal)
TonyEX
08-26-2011 01:41
Re: Shift point? No VTEC love?   (Score: 1, Normal)
TonyEX
08-26-2011 03:47
Re: Shift point? No VTEC love?   (Score: 1, Normal)
owequitit
08-25-2011 10:14
RSX-S   (Score: 1, Normal)
NSXman
08-25-2011 11:40
Re: RSX-S   (Score: 1, Normal)
notyper
08-25-2011 19:42
Re: RSX-S   (Score: 1, Normal)
LudegarH22A7
08-25-2011 22:23
Re: RSX-S   (Score: 1, Normal)
owequitit
08-25-2011 22:57
Re: RSX-S   (Score: 1, Normal)
notyper
08-23-2011 17:46
Good comparison and info   (Score: 1, Normal)
siegen
08-24-2011 07:07
Re: Good comparison and info   (Score: 1, Normal)
Dren
Jump to:
TOV Video: 2019 Acura RDX Walk-around with LPL Steve Hansen
Read Article....................
TOV Photo Gallery: 2018 North American International Auto Show
Read Article....................
2018 Acura RLX PR Photo Gallery
Read Article....................
TOV First Drive: 2018 Honda Accord
Read Article....................
2018 Honda Accord Specifications and Features (FINAL)
Read Article....................
2018 Honda Accord Hybrid PR Photo Gallery
Read Article....................
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2017 Velocitech Inc. All information contained herein remains the property of Velocitech Inc.
The Temple of VTEC is not affiliated with American Honda Motor Co., Inc. TOV Policies and Guidelines - Credits - Privacy Policy