[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
This 2019 Acura RDX A-Spec is wearing an exclusive new shade of blue
More.......................
2019 Pilot gets upgraded with standard LED headlights and "Telematics"
More.......................
Sources: 2019 HR-V adds Sport trim, loses 6MT option
More.......................
All-new 2019 Acura RDX Makes Road Debut as Official Vehicle of Rally Cycling Alongside NSX Supercar
More.......................
Clarity Electric still available for $199/month lease, but down payment has increased $600
More.......................
Driving impressions: Hondata's FlashPro for the FK8 Civic Type R
More.......................
American Honda Reports April Sales Results
More.......................
Honda reveals Everus EV Concept at Beijing International Auto Show
More.......................
Today's Reading Links --> Re: Tesla - facts behind the mirage
Join Discussion......
General Talk --> Re: My NSX video
Join Discussion......
RDX --> Re: 2019 RDX Trim Levels
Join Discussion......
Today's Reading Links --> Re: Genesis G70 - Everyday Reviews
Join Discussion......
Civic --> Re: 2019 Civic MMC rumors?
Join Discussion......
NSX --> Re: 2020 NSX Type-R
Join Discussion......
General Talk --> Re: Electronic rear view mirrors - one thing I don't like
Join Discussion......
Professional Motorsports --> Re: Moto GP Spoiler
Join Discussion......
General Talk --> Re: Porsche Macan S weight distro: 56.7/43.3
Join Discussion......
Today's Reading Links --> Re: Electricity Supplies tight in Calimestan
Join Discussion......
Today's Reading Links --> Re: Want to stop faster than a Tesla Model 3? Get an F-150
Join Discussion......
General Talk --> Re: Drove the new Mazda 6 Signature with 2.5 Skyactiv Turbo today
Join Discussion......
General Talk --> Re: I just realized
Join Discussion......
Fuel Cell Technology --> Re: Beat a Mirai to the H2 station last night New style H70 pumps
Join Discussion......
Professional Motorsports --> Re: F1 - 2018 Spanish Grand Prix
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:
Photo Gallery - Some other cars from 2019 NYIAS
Read Article....................
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....................
Contact TOV | Submit Your Article | Submit Your Link | Advertise | TOV Shop | Events | Our Sponsors | TOV Archives
Copyright © 2018 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
29