Should I Do the TB Mod??
 

I know about the bogging out and stuff and how u can't romp on it below 3K RPM......but what are the benefits?? Everyone says "search" but all the threads I open some one says "search" and then no answer is provided.....if ppl would just at least put up a link than all the results would have an answer instead of searching 10 minutes for something that should have taken 1 minute at the most.

Thanks
Hassell

... What is the TB mod (obviously its to the Throttle Body, but you know what I mean :D )?

http://fc3spro.com/TECH/HOWTO/TBM/tbm.html





And my opinion, yes you should. It helps turbos a lot from what I hear, not too hard, and you wont have to worry about cold weather being in CA. Go for it.

yea i did it and it picked up a little on the top end with the TB mod, i would say go for it

I don't like the idea that throttle response is sacrificed below 3000rpm's. Just my opinion.

Who says the throttle response is bad below 3K???

I BARELY noticed any difference... I just have to not "SLAM" it. If I feel like driving a little more spirited... I'm never below 3K anyways.

Definately noticed a little increased top end. While I did the mod though, I also ported the TB. If ya got it out, might as well do it. Just be careful.

If you do the TB mod.. bust out your dremel and port it. If you don't have a dremel, go buy one, you'll be GLAD you did :D You use it so much.

These pics aren't mine, but mine's pretty close.
http://memimage.cardomain.com/member...92_73_full.jpg
http://memimage.cardomain.com/member...92_74_full.jpg
http://memimage.cardomain.com/member...92_75_full.jpg

When/If you do it... take the dashpot off, and see if the bogging is really bad. If so.. just put the dashpot back on, and adjust it all the way down.

I currently don't have mine on. It does bog, but I just got used to it. When I'm not so lazy, and have to replace the MOP I'll put the dashpot back on.

There's a LOT left to be ported in that if you ask me. I went way further on mine. Like, right before the back throttle plates you know how there's that little lip? Same thing on the back of it after the plates? Yah mines completely gone and smooth through the whole way now, along with as much metal as I could grind away.

I'd say definatly do it also. I noticed a nice lil increase. But you have to weigh out the low end sacrifice. Makes it a lil harder to creep through parking lots. But I didnt buy a sports car to creep through parking lots. If I wanted that I'd buy a Honda.

Since when? I have to creep through my college parking lot all the time, no problem here at ALL. I didn't notice a damn difference in low end.

n/a - no
turbo - yes


- Matt

I have only had the car bog once since I did this and it was because I did too much throttle too low.

Other than that it has not affected my driving at all.

sounds good.........thanks guys....now for the $25K question: Why and how does this mod work. What are benefits? Higher top end power?

Better throttle response above 3k I believe. Someone with a hybrid turbo was having problems reaching full boost too IIRC, and the TB mod helped quite a bit. I don't know all the reasons for turbo, but I believe those are some main ones.

oh, ok.....thanks.

Hmmmm, mine's real touchy on the throttle. I dunno. Maybe its just my car.

Maybe, I've never noticed a problem, and my friend with a TII hasn't had much of a problem either. Or maybe we're just the lucky ones, who knows.

I got rid of all the little lips and/or bumps... but didnt go as far "down" here:

Just kinda sharpened it a good bit.

i just did this last weekend on my car and i was really happy i did. It's only bogged once on me and that was my own fault for going uphill in too high a gear at too low a speed. I really like the way it runs, and it sure cleaned up things a lot.

i ported mine out alot more than that... and i love it on my n/a
https://www.rx7club.com/forum/attach...chmentid=67292

and if you stay within your "bandwith" your car should not bog... stay high on the rpms

I did mine more like cwsttu's, but I went even further. I always seem to do that though, go as far as I possibly can, sometimes thats not a great thing though :p:

Anyways, mine is pretty much like his posted, I'd say if you're going to port as well go that far.

mines the same way
check your tps
if your tps your throttle is going to be very touchy and kinda jerk when letting off the trottle or getting on the throttle

as far as the mod goes on an N/A it prolly isn't going to do much if any real good
on a turbo it should help the turbo start to flow a little ealier and boost up
as far as the top end I really don't se ehow it can add that much


if anything would like to see dyno before and after on the thing done the same day around the same time

haha ddub i know i could have gone farther but i had to get my car running again... one day when i port the manifolds im gonna redo my TB porting on another one and tap screws cause i had to use jb weld (ducks and runs)

Yah, :werd:

I could have even gone further, but just like you I wanted to get it done and my car up and running!