[Euro] 2006 Auto TSX Dyno!

[aaronng]

VTEC.net dynoed the '06 auto TSX. Guess what? The VTEC kick is back! The intake cam now has higher and longer lift. The throttle body is wider and intake valves have had some working. 40hp jump after 6000rpm!

http://vtec.net/articles/view-article?article_id=453644

[Banana]

that is so cool !

[Chris_F]

very nice... i want vtec kick too :p.

The k24a2 now has about 20hp more stock than our k24a3 in the euro :( - surely the differences between the engine aren't that great, yet such a power difference...

[aaronng]

Blame Honda Japan who decided to put in the 140kW Accord Stationwagon 4WD engine into our Euros! (UK also gets the same 140kW). They kept the sweet 147kW for the US and Japan.

The model update cycle here is slow. US gets more power after having the car for 3 years. Australia has had the Euro for 2.5 years but no power increase eventhough it has the same exterior and interior changes!

[Ferrarista]

Blame Honda Japan who decided to put in the 140kW Accord Stationwagon 4WD engine into our Euros! (UK also gets the same 140kW). They kept the sweet 147kW for the US and Japan.

The model update cycle here is slow. US gets more power after having the car for 3 years. Australia has had the Euro for 2.5 years but no power increase eventhough it has the same exterior and interior changes!

So we wont see the 147kw here?

[aaronng]

So we wont see the 147kw here?
Not for 2006. The competition for the TSX in the US is the 325i, so it needs the 147kW. Over here, the Euro's competition is only the Mazda6 and Liberty 2.5, and both of them have less power than the Euro. Unless a competitor with over 140kW of power emerges, I don't think the Euro will get a power upgrade.

[yfin]

Not for 2006. The competition for the TSX in the US is the 325i, so it needs the 147kW. Over here, the Euro's competition is only the Mazda6 and Liberty 2.5, and both of them have less power than the Euro. Unless a competitor with over 140kW of power emerges, I don't think the Euro will get a power upgrade.

Isn't the 06 TSX more than 147kw now? I thought the 05 TSX was 147kw - now it is more (not sure what it works out to be because they changed the way they calculate horsepower)

As a side point - isn't the Euro pretty close to 147kw anyway? It seems to dyno roughly the same as the DC5R which was rated at 147kw at the engine.

[euro1978]

Power upgrade is coming in 2008

I can't say anymore but to everyone that has 2003 - 2005 euro - don't even bother with the facelift.

[h22a accord]

175whp on a dynojet from an 06 tsx auto! Thats pretty good for an auto. Another member of ozhonda in america managed 175whp on a dynojet from his 95 accord H22A with I/H/E but his is a manual tranny so he isnt suffering as much power loss through the drivetrain. I'd be interested to see what the 6 speed tsx with I/H/E puts out on the rollers!

[aaronng]

Isn't the 06 TSX more than 147kw now? I thought the 05 TSX was 147kw - now it is more (not sure what it works out to be because they changed the way they calculate horsepower)

As a side point - isn't the Euro pretty close to 147kw anyway? It seems to dyno roughly the same as the DC5R which was rated at 147kw at the engine.
06 TSX's 152.9kW using the new standard of measuring. So it could be even higher. Our Euro is only 140kW. I haven't dyno'd mine yet so I'm not sure on the numbers. But I remember that the US 03' TSX power figure was slightly under rated. Maybe that's why you've seen Euros with similar dynos to the DC5R. Hopefully our engine is under rated too.

[Chris_F]

haha i decided not to think about the tsx engine, its a bit depressing knowing that a few simple differences has there engine putting out 12+kw more than ours. at the end of the day the k24a3 is still a great engine with heaps of potential :thumbsup:

[Ferrarista]

haha i decided not to think about the tsx engine, its a bit depressing knowing that a few simple differences has there engine putting out 12+kw more than ours. at the end of the day the k24a3 is still a great engine with heaps of potential :thumbsup:
What are the differences though?

[aaronng]

What are the differences though?
I think it's the ECU and maybe cams.

Edit: I'm talking about engine differences between 03/04 and 05 TSX compared to the Euro.

[Chris_F]

as far as i know (and for the 2006 models) the intake manifold is slightly different, throttle bodies diameter is larger, injectors are also larger (i think), the k24a2 now also has "air ducts" surrounding the cylinder or something that reduce friction... i'll try find a link with more details... basically those though and the fact that the ecu is probably tuned more agressively.

[aaronng]

as far as i know (and for the 2006 models) the intake manifold is slightly different, throttle bodies diameter is larger, injectors are also larger (i think), the k24a3 now also has "air ducts" surrounding the cylinder or something that reduce friction... i'll try find a link with more details... basically those though and the fact that the ecu is probably tuned more agressively.
You mean for our 2006 Euros, there has been changes to the engine? But the press release stated that there were no changes to the engine and drivetrain.

[Chris_F]

ok found it


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.

these changes have been made in addition to the pre-existing differences between the k24a2 (tsx engine) and k24a3 (euro engine) as far as i know.

aarong, sorry - i meant to say k24a2 in my previous post no need to be alarmed ;)

[yfin]

The thing is though - the JDM Accord has 147kw - same as the 03-05 TSX.

So there may be very little differences between these vehicles and the Australian version. I think it is tuning. Obviously as stated above the 06 TSX has some additional changes that take it to a new level.

[Chris_F]

yfin, do you know if the JDM accord's engine is labeled k24a3 or k24a2?

if the major difference is in the tuning an aftermarket ecu would do a world of good - aarong was it you who found out about the standalone ecu being released for the tsx next year ?

Also makes me think that the combination of bored throttle body + aftermarket intake could show some very promising gains

[aaronng]

Nope, wasn't me. But I read about the standalone ECU on the tsx forums today.

My Hyper Rev Honda Accord book only says K24A. But the JDM sedans and FF wagons get 147kW, while the 4WD wagon gets 140kW.

[V205]

Sometimes the less powerful engine has better low end torque behaviour which is better for daily driving.

Ie. the K24 engine on the CRV is 118kw but peak torque is at 3600 RPM.


* but we all know peak torque figures mean nothing... it's more like the whole torque curve for the RPM range.