FW: [V8] 5 speed conversion!

Buchholz, Steven Steven.Buchholz at kla-tencor.com
Thu Dec 11 12:00:22 EST 2003

... my car still has the 5-speed ECU installed and an AT version of the PT
with no damper installed on the TB.  I've had no problems with this
combination whatsoever.  It is my understanding that the only reason the
damper is there is for emission purposes ... when the throttle snaps shut
and the engine is at high RPMs the high vacuum in the intake creates a
situation where high NOx emissions can occur.  

Steve B.
San Jose, Kaleefohnia (USA)
>  I'll be doing a 4.2 swap into a factory 5 speed car soon 
> which may bring up 
> another situation. The 4.2 has a staged throttle with a 
> smaller primary bore 
> that opens about 1/4 before the larger secondary opens. I 
> want to keep this 
> feature for throttle response reasons but keeping it means no 
> throttle damper. 
> I'm curious to see how the 5 speed ECU will react to this 
> situation. 

More information about the V8 mailing list