[home][rumors and news][model release matrix][tov motorsports][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
New Civic Type R spied testing on the Nurburgring
More.......................
Upcoming Integra will offer a 6-speed Manual!
More.......................
Honda releases images of 11th generation Civic Si undergoing race development
More.......................
Spied on the Street! 2023 Honda Civic Type R
More.......................
Honda shows off 2023 Civic Type R Nurburgring development vehicle
More.......................
American Honda reports September 2021 and 3rd quarter sales results
More.......................
Acura drops another teaser for 2022 Integra, reveals it will be a 5-door
More.......................
Honda announces updates for 2022 Passport, new TrailSport trim
More.......................
General Talk --> Re: New to me MDX Hybrid. This car is so good
Join Discussion......
General Talk --> Re: Honda 2030??
Join Discussion......
TLX --> Re: MT Comparison Test: TLX Type S
Join Discussion......
Today's Reading Links --> Re: Chipmakers to carmakers: Time to get out of the semiconductor Stone Age
Join Discussion......
HondaJet --> Re: New Jet
Join Discussion......
Professional Motorsports --> Re: What A Boneheaded Decision
Join Discussion......
Integra --> Re: New Integra teaser.
Join Discussion......
Videos --> Re: Honda Electric Vision
Join Discussion......
Integra --> Re: Integra GS-R Review
Join Discussion......
Ridgeline - General Talk --> Re: Ridgeline vs Santa Cruz
Join Discussion......
Professional Motorsports --> Re: TOV-M: Indycar Rearview Mirror: The Drivers, Top Teams, and Why Alex Palou Won the Title
Join Discussion......
HR-V/Vezel --> Re: 2022 Honda HR-V Electric Version Makes Early Debut In China
Join Discussion......
Ridgeline - General Talk --> Re: New HondaJet 2600
Join Discussion......
General Talk --> Re: Honda Reveals Details on New EV Lineup for China
Join Discussion......
Civic --> Re: 11th Generation Honda Civic Reviews
Join Discussion......
Jump to:
article details
Author Jeff Palmer
Categories Dyno Testing, TSX
Create Date December 02, 2005 10:54
Last Update December 07, 2005 07:22
2006 Acura TSX 5AT Dyno Test
We've been waiting anxiously to once again try out Acura's TSX, which is the recipient of several upgrades. Of course the most significant change to us are the revisions to the motor, which are described as follows:

On the intake side of the TSX engine, the diameter of both the throttle body and the intake duct were enlarged to increase induction flow rate from 95 liters per second to 110 liters per second. In addition the diameter and shape of the intake valve were enhanced to help increase intake flow by 16 percent and the high RPM cam profile for the intake cam was modified to provide increased intake valve lift and duration. In addition, a ventilation passage was machined into the engine block to reduce pumping friction by increasing air flow between cylinders.


Engine code remains K24A2

All this is said to result in only a 5hp increase, but don't forget that due to the recent revisions to the SAE J1349 testing standard, almost all Acura and Honda motors horspower and torque have been revised downward for 2006 so the actual improvement over last year's motor is said to be actually 10hp.

The first 2006 TSX press loaner just became available here in Atlanta, so I jumped at the opportunity to check it out. Unfortunately, this is also the first 5AT TSX that's been in the press fleet here, so we don't have any basis for comparison on our dyno run. There are currently no 6-speed '06s here yet, but we're going to try to get our hands on one in the next month or so.

I took the car over to Dynolab in Marietta, GA, where Arthur strapped it to the rollers which we subsequently spun to 145mph.


Click for full-size

We're pretty sure that the strange loop shown in the dyno plot is the point where the torque converter finally locked up. It's a little strange that it didn't happen until nearly redline, and you can see that below that point the slippage of the torque converter was costing the car some power and torque. Inside the car, it was strange as well because I've never felt a car lose rpms at full throttle on a dynojet before. Perhaps there's some trickery going on with the drive by wire which momentarily cuts the throttle as the torque converter locks, in an effort to disguise that event to the driver and passengers. Obviously, the false peak of 180hp must be thrown away as it's clearly an artifact of this step, but after the torque converter locked up this car put down a pretty healthy peak power of 175hp. On the road it feels quite nice - much better than the '05 TSX, which had a very subtle benefit from VTEC. On my own '04 TSX baseline dyno, if you compare the difference in the power level at 6000 rpms (just as the VTEC switches over) and at the car's peak (in VTEC), it's only about 20hp. On this '06, the difference is roughly double that, at a little over 40hp! This can very obviously be felt on the road and it gives the '06 that sense of urgency and a bit of an added high-rpm thrill that's lacking on the '04 and '05 TSX. The rev limiter remains at 7300 rpms on the '06, and it's still not enough - particularly since the car now pulls more strongly up top, it feels like it could use another 500 or so rpms.

Conclusions


Overall, I like the improvements to the K24A2 (it's still labeled that, by the way) for '06 and I can't wait to try out the 6MT version. We're hoping it puts down 10-15 more hp at the wheels than the 5AT version. With a few bolt on mods such as a 4-2-1 header (the '06 appears to use the same design as the '04 and '05) and a cold air intake, it wouldn't surprise me if the '06 is capable of over 200whp. And if Hondata can successfully reprogram the '06's ECU, then we might even see another 10hp or so of peak power and a healthy dose of added midrange.

Videos

Windows Media V9 - 7.0MB (550kbps) - 01:57
Windows Media V9 - 1.38MB (100kbps) - 01:57
DivX 6.0 - 7.8MB (570kbps) - 01:57
DivX 6.0 - 1.6MB (120kbps) - 01:57

reader's comments
Click Here to Submit Your Comments

Viewing Threshold (What is this?)

[fancy] [flat] [simple]
Subject Thread Originator Replies Last Post
  0-60 Times???
2K6CSX 6
  Why such an abrupt surge of power
ipribadi 4
  What Happened to the 205HP
brown12222 1
  dyno replie
teamflatlane 0
  Dyno
95GSR_99 12
  Rev Limiter 7300?
georgewillow 3
  VSA Check??
JeffreySnLA 1
  TSX makes sense now!
mlody 7
  JDM Engine
alan3885 4
  Torque
QBoi 0
  nice run
6SPDTL 0
Jump to:
2022 Acura MDX Specs and Features
Read Article....................
2022 Honda Civic Design Story, a video by Honda
Read Article....................
Photo Gallery: 2021 Acura TLX Advance
Read Article....................
Photo Gallery: 2021 Acura TLX - Details and Cutaways
Read Article....................
Photo Gallery: 2021 Acura TLX A-Spec
Read Article....................
TOV Photo Gallery: 2020 Chicago Auto Show
Read Article....................
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2021 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
31