World Exclusive Test: 2011 Spoon Sports CR-Z - Road Test

[KiRiMa]

Mugen,Spoon...decisions decisions....yaaaargh...option anxiety!!

[alollini]

Venturi Throttle, and N-1 end part of exhaust are the only legal-proof options in France.

[alollini]

a customer translated some Japanese to me : the Spoon engine is a lot worked, polished internals, pistons are exchanged (more compression)... New spark plugs.
Anyway the ECU is the main upgrade, that alone has a potential of 20% (ps and Nm) (on stock engine) however reduced to maintain reliability.

I will look for ECU availability.

(still waiting my Oz, Spoon N1, throttle valve, HKS suction) delivery expected Jan, 20, 2011.

[northbridge]

^20% midrange or peak? im guessing midrange.

[alollini]

the throttle valve alone is adding 6 hp from 2500 and all the way up. (with all stock)

i will give my feeling as soon as installed.

I hope a little more with Racing suction + throttle valve, if the stock software auto-adapt ?

I don't know details about the job of the ECU but the 20% gain seems on a wide range.
all my questions about re-progs or ECU availability seem to go in a black hole.

[northbridge]

^ yeah, it will take some time. when theyre ready to release information they will. It sucks being an owner and waiting on the parts though.

[CRZ_for_me]

By throttle valve I think you are saying enlarged throttle body. I have a thread about getting the TB bored out which equals an enlarged throttle body.

It makes sense. I wonder what size Spoon's TB is to get the 6 hp.

[alollini]

air way it enlarged by no more than a couple of mm in diameter.
final valve is 56mm diameter instrad of 50 (stock), a 25% increase in surface.

links :
Venturi Throttle Body Assembly - CRZ - ZF1

CR-Z[ZF1] Ventul Big Throttle Body