hey guys, i was just wondering if there was a difference between the evo 8 and 9 throttle body?

 

They are identical, I believe. I swapped mine out with a ported IX one and noticed no differences.

 

Did you port the intake manifold as well? Combine they are worth 7-8whp. Just the throttle, there would probably little or no gains

 

ok so they are identical. For some reason i was under the impression the 9 has some other different sensor.

 

03/04 tb's have a heat actuated idle air bleed flapper device. the 05/06 tb's do not have this.

you can install either tb onto either year evo, it will fit & work fine, however there is a slight difference.

i will post pictures tomorrow illustrating the differences.

 

Thanks captain obvious, way to go OT and yes I did both. Should be worth more power than that though.


Good to know! Any way to tell from the outside? Please post pics!

 

yes.

 

ok so i guess i should say the reason why im asking is because i want to buy a stock tb for my evo 9 to be ported from buschur (you know the $300 tb port job). But the only one i can find for sale is from an evo 8. Am i gonna be ok?

 

oh man i just read it again. It is done on an exhange policy. I guess they dont use the same tb i send them. They just wait for mine to come in and then they ship the one already made. hmmmm

 

No offense, but the guy answering your questions performs the service you're looking for too. Maybe try that route.

 

well then talk to me buddy...lol - no offense taken

 

+1 on what he said. MIL.Spec also doesn't charge $300, they cost less.

 

PM'd

 

Sorry for reviving an old thread.

Is there any way to eliminate this temperature controlled idle flapper?

Thanks,

 

yeah, un due the screw, pull out the device, use plieers to physically pull out the mechanism & now your left with a aluminum piece that holds the o-ring. re-assemble.