Throttle Body options...

[BDD]

What ever you do for a throttle body,DO NOT BUY FROM XTREME EFI IN AUSTIN TX.
I sent them a brand new throttle body to have bored,and pre paid thru pay pall,thankfully.
After two weeks of not hearing any thing I tried calling them,no answer,left massages,no return call.
I emailed them,nothing.I emailed again,explaining paypall rules,they emailed back saying that they never got my throttle body,or emails,or messages.ya
I gave them my tracking number with the time they received it,and the name of receiver.
They said they found my throttle body and it would be sent out asap,a few days later i received a ugly pitted worn pos, from an older motor with no mounting bosses for the map sensor,or vacum port drillec for it.I emailed them,they said what I sent them,was what they sent me back!!!
I have never dealt with more incompotant people in my life.
I drilled the vac port and zip tied the map sensor to the intake,it works ok,but the blade sticks in the bore when it gets hot. Screw xtreme efi.

[Shark]

For those of you who said the larger bore throttle bodies ended up hurting performance, what amount of head and intake port work and or larger valves do you have? Someone mentioned volume vs. velocity, it would make sense to me that if you don't have the ability to flow a large CFM velocity would decrease.

Have any of you looked at what amount of flow needs achieved to utilize the larger bore of a given size TB? IE mild port = 65mm, more port with larger valves = 70mm. Concrete data would be nice but i doubt anyone who has a flow bench and a bunch of heads and intakes lying around with varying amounts of port/valve work would supply this data for free. Even then you would need to factor in different cam profiles, because i'm sure that how long each valve is open has something to do with this topic as well or am i off track here? Dyno testing with different cam/TB's would be easier.

[yuppiexj]

Here's a nice time sink for you
http://www.jeepstrokers.com/forum/viewt ... igma#p2485