Update my friend improved his times at the track with only Work TB be added to his VISHNU stage 0+ at the last SOCALEVO/EOC track day

Who cares about WHP since at the track the thorrtle response is important.

The TB is made that benefits cars that track and in SOCAL there are several track days a year that socalevo/ EOC guys host. One thing I learned when I came out to socal is that most EVO people don't care about dragging instead they want to take it to the track. The power gains may be minimal but the throttle response will lead to quicker lap times.

This post got really long quickly but the point of the post was lost which is the car spools faster which is why Works TB rocks. Watch a Best Motoring Video and see that throttle response is important at the track.


My2cent

 

i know there is a company that makes an 80mm throtle body for us evo owners i think its rc developments they dont have the prive listed but its listed with the intake manifold im sure they sell it seperatly though so far that is the biggest one i have seen to date

 

Years ago, I heard a story at the shootout (I think Tym Switzer was talking about it) about Dave Buschur putting larger and larger intercoolers on his RWD DSM. It kept on making more and more power on the dyno with the larger intercoolers. But the performance at the track was identical to the old setup. Evidently, the larger intercooler was beneficial on the dyno because you couldn't get the airflow through the intercooler on the dyno that you could when you were doing 140mph at the track. Go figure.

 

What is the differenece between the 03-04 throttle body and the 05 throttle body?


-Dan S.

 

I believe forester racing will make you a throttlebody from a ford and thier intake manifold work.

 

You lose idle control. And every Ford TB I have seen, Accufab and BBK, have issues with snapping their shafts under high boost. Not fun.

 

The 05 uses one less component (a mechanical valve) vs. the 03-04 models.

 

How much larger is the throttle body.

Mark

 

b18flip - Did you get any response?

 

oh yeah i'm sorry i totally forgot to update you guys, he said he could definately machine them out to a larger bore....He doesn't have any evo 8 throttle bodies so you'd have to send him yours, I couldn't find an OEM 05 TB so i can't do it yet. Send him an email

 

That's funny... Oh wait, you're serious?

 

i got one, i am going to do this. for 100 $ i can't go wrong, whatever happens i let you guys know.

 

A user on this thread claimed a 8whp difference on a dyno. I don't know if 8whp could be factors other than just the throttle body.

It sounds like Shiv has some contacts that are trying to firm up the dyno questions in order to verify these add on less than 3% horsepower gains.

My question is ... what percentage does the dyno whp fluxuate between runs on a car? At least for now with our current dyno setups, can we upper bound, the horsepower gains that we should see for any paticular addons?

Also ... another idea ... I've seen some motor driven throttle body usage as of late. Namely on the Subie STi, and some BMW V8 motors. The BMW motors were built from Falconer Racing, and it was interesting to ask Falconer why they would put in an electronic motor there. They claimed they can tune the throttle response of the motor so well, they are customizing the throttle response best for both the motor, and for even a paticular driver.

Thanks,

jcnel.

 

interesting stuffs

 

sounds good, keep up updated. I'm leaving for vacation so i might take mine out as well and send it out while i'm gone