I've seen a lot of debate about the gains of a bigger TB but very rarely some actual dyno runs. I'd like to try one with a before and after dyno run. So who's porting TBs these days? I tried NOMAD's site but it doesn't work...
Thanks.

 

Pretty useless if you ask me

 

Useless or not, I'm willing to try it. I have the opportunity to test it, so if I can get my hands on one, I think the info will be useful for other people as well.

 

I know thunder racing sells stock throttle bodies that are bored out to 52mm for $200-250, I forgot the exact price.

 

I'd definately be interested in your findings madwolf. Would you by any chance be willing to do a test for a difference between say 48/52/58(mm) throttle bodies on the same exact car?

 

Wasn't there a guy on here that would bore your stocker to 52mm for a reasonable price?

 

I just sold my 52mm, and went back to stock one. Throttle response doesnt seem to be as great as before, but i beleive you get decent gains, i beleive most 52 and above come with an airfoil so that plus the extra air allowed get in should get you a decent amount of HP,

 

theres one here, wouldn't be far too ship either....

thanks for the awesome tune btw

also, what kind of mods, if any, is the test vehicle going to have?

 

Ion,

Try this guy (David Koldos)

http://impalassforum.com/noncgi/ulti...;f=38;t=000024

After I posted I noticed the above post has the same guy. DOOOHH!

He does lots of work for the Corvette folks. I was considering doing
the same thing once I get the TB.

I still need some help with the tune so please let me know what the
next step is.

 

I'm looking in on doing the t/b . I have a manifold to port. just need some AFR heads..

 

You might want to do a search. I swear i saw a post by Cmillard about installing a 58mm tb and tuning for it and saw a 30rwhp gain. It was on a heads and cam car. You might just want to look at getting a 58mm. I'm really happy with my BBK i just need to do the IAC mod.

 

I just ported my TB two days ago, havent dynoed but did notice a little more throttle response and low end torque. any questions ill be happy to help ya out. maybe even take some pictures.

 

Oh i also took the time to custom cut around the IAC and bypass the coolant lines.