Toymods Car Club Inc: General Car Talk => Interesting Dyno results for my car and a 20V 4age AE86

Toymods Car Club
www.toymods.org.au

F.A.Q.

Home

Members

Toymods » General Car Talk » Interesting Dyno results for my car and a 20V 4age AE86 Show: Today's Posts :: Show Polls Email to friend

Author

Topic

yfin
Newcomer

Registered:
February 2005

Re: Interesting Dyno results for my car and a 20V 4age AE86

Sun, 27 February 2005 10:37

improvedae86 wrote on Sun, 27 February 2005 10:52

The euro's dynoed yesterday had lots of strange differences .

Forum : Oz Honda
name : yfin
Car : Euro
Engine : K24
Power: 135.6hp 101.1kw

Forum : Oz Honda
name: euro77
car: Euro STD manual
Engine: K24A
Power : 160.80hp 119.9kw

Why the difference , one is driven harder than the other maybe . Also there have a very interesting ecu , it self adapts to the driving style used . The most powerful euro had feathered tyres in 19.000k's so i guess it must work . The mapping of these newer honda engines is very different to most cars , the air fuel ratio at throttle levels to pass euro 3 regulations is very lean .

Then as soon as the rpm or throttle percentage is above the required level the air fuel drops to very rich levels to protect the engine . But there no fuel smoke from the exhaust pointed out by race engineer which was there , so there cylinder combustion must be spot on .

Also another strange ecu function is the way the mapping is controlled by the vehicle speed and which gear is used . Basically the car is mapped more powerful in the lower gears than the over protected top gears . Looking at the rules for n/a engine a/f ratio if you could just change that function in the mapping those euro's would have had maybe 200hp at the wheels not bad for a stock production engine .

Yes there along way ahead of most manufactures in the n/a engine design .

Hey improvedae86 - interesting comments about the euros. Mine got the 119.9 (not euro77)- and I got 120.1 on the last run. I am not 100% sure about the adaptive ECU - I have heard words to that effect but I am not sure - Honda doesn't publicise this sort of info. The drive by wire throttle does do some strange things in this car - some days it feels REALLY powerful - other days it is just "so so" if you know what I mean.

EuroAccord13 on Ozhonda has got some good results by tapping into the ECU with a VAFC II and cutting out fuel from the mixture. His car makes much more power than mine.

Oh yeah - and thanks for noticing my feathered tyres!

I saw your sr20det on the dyno - my goodness - that thing must be a rocket on the road!

Cheers
yfin

[Report message to a moderator]

[Message index]

-=] Back to Top [=-

Current Time: Fri Jan 31 15:57:14 UTC 2025

Total time taken to generate the page: 0.0075309276580811 seconds

.:: Contact :: Home ::.