importboi22

any feedback from someone who did it on a T2 was it worth the time? also what about porting the manifolds worth anything also on the t2? want some feedback i got alot of time this weekend thanks you guys!!! also any gains any loses in power?

Liquid Anarchy

iTrader: (2)

From what I hear, it actually does MORE of the TII than and N/A

importboi22

exellent now im just waiting for some more feedback before i dig in! heheh anyone in the socali area wanna help me out? thanks!!

HWO

Port the TB with a dremel or similar, smooth it out so the air can flow thru it real smoothly, do the manifolds aswell, huge gains to be had with porting the TB, drops alot of turbo lag.

dvls-7

You don't need to port unless u want to....I did it jus the other day with out porting anything jus removed the 2 butterfly plates and blocked off those little vac lines. It is a nite an day difference.....trust me go ahead and do it...i imagine if u want to port it it'll jus make that much better.....good luck.....let us know how it turns out

No7Yet

Doing the TB mod will

1) lighten the throttle feel past the secondaries opening
2) eliminate your cold-idle (1500 RPM warmup)
3) increase your hp by a small amount
4) make the car harder to start in the morning
5) eliminate your TB coolant path and the 90 degree hose (no more leaks)
6) probably make you have to reset your warm idle
7) increase throttle response
8) make your TB look better/simpler
9) make the car "touchier" (jumpier, jerkier, etc) during small throttle changes and at low RPM
10) Make you wish you were as cool as me.

Recommended? Certainly, but not unless you've got a problem with it (leaky hoses, stuck-high idle, etc) - it's not a terribly small job.

Brandon

bob13bt

iTrader: (9)

I did this mod because I had a 2200 RPM idle

Its sweet, but yes warm up is a bitch and shes a bit choppy, but boost comes on quicker and it feels faster.

Do it!

Felix Wankel

Mine sucked to drive last winter (takes forever to get an idle, like my old Holley carb on my Trans Am), but other than that its alright I guess. If you don't have anything else to do, go ahead and do it.

fastrotaries

Mine idles fine with my Haltech.

TonyTurboII

Anyone pass emissions after doing this? Im already worried about passing emissions with a haltech, I dont need something else to hold me down!

No7Yet

Yes, BDC proved that with a Corvette electric airpump, you can pass emissions with FLYING COLORS, IFF the ECU is tuned correctly. Many people have passed emissions after doing a TB mod - it's pretty minor on the modification scale (I'd say 1/10), but about a 5/10 on the difficulty scale if it's your first time.

Like I've said before, people go ga-ga over this "free" mod, but I wouldn't touch it unless you've got a problem with it. You gain so little power as to be next-to-unnoticable (this is dyno vrfd - 2hp, max, with slightly improved throttle response).

Brandon

RexRyder

iTrader: (10)

What's the TB made, of aluminum? Won't the dremel melt it? Is it better to do it manually with some fine grit sandpaper

Bambam7

Jeez, if you have that much free time, I have some paint that you should watch dry....
Sure, aluminm can melt and pack up a grinding stone, but you just keep the speed down and keep moving it. It's really no big deal- It doesn't start deforming the surace or anything.

I personally wouldn't do this mod on a street car. Seriously, do you want your car looking and driving like a total POS when it's not warm? So for at least the first 5 minutes? And bucking around in a parking lot at low throttle? That looks cool... Is that worth 1hp to you? 25, maybe, but not for such a small amount.
Not me thanks.

RETed

Are you planning on romping on it when the engine is cold?


I'm sorry if you have inferior throttle control.&nbsp One of the interesting side effects of this mod and the low RPM throttle transition "problems" is it makes you a smoother driver.&nbsp Anyone who has taken "driving school" lessions knows that smooth throttle/brake applications is stressed during these events.&nbsp This definitely makes you apply throttle a lot smoother.



-Ted

Bambam7

I am not speaking from first hand exerience- just from what I've heard, and my own ideas about what a car should drive like.

My car is pretty harsh on/off throttle as it is, and trust me- NO amount of driver smoothness can correct that, it's a minute point from decell to acell where the whole car jerks- no matter how slowly you press the gas- take 10 minutes to move it the first 1/4" if you want, it'll still jerk when it hits that point....
Combine that with a on/off clutch, (that seems to like to engage at different points whenever it feels like it!) and you get a car that takes months before it can be driven acceptably smoothly by someone.

Just from what I've heard, the tradeoff doesn't seem to warrant the small gain.
It seems to me it's comparable to removing the muffler to gain a couple more HP. It makes driving the car really sad- and leaves a bad impression on any passengers.
I just don't like having to make excuses to people for the way my car drives.. I like it when I take someone for a drive and thay are impressed at how well everything works... I don't want to be saying "Sorry about the bucking, and the fact that it won't idle for another 5 minutes..."
Again, I havn't done it, but I don't like making unbalanced sacrifices.
Just doesn't seem worth it.

Piranha

I did the TB mod a few days ago, and my low end is quite fine, infact, I'm having fuel problems (unrelated, it HAS to be!!!!) and I can't even let the turbo spool or I will lean out. I don't get jerkiness, must be other things.

dvls-7

well I don't know if its jus me but so far I have not had any of those quirks yall mentioned.....mine cranks rite away, and the jerkiness ive adapted to with proper throttle usage. For me it was a major improvement and problem solver so I say its worth it.

RETed

You're car is fucked.&nbsp You're not qualified to make any conclusions on what the throttle body does if you're basing everyone else's car runs as crappy as yours.


It sounds like a copper-puck or unsprung hub clutch disc - both are not "streetable".&nbsp This has nothing to do with the throttle body mod.


How can you come to such a conclusion when you can't even fix your own car?


It doesn't increase noise.&nbsp It doesn't doesn't "mess with emissions".&nbsp Your comparision doesn't make any sense.


Why don't you fix it first?


Funny, for someone who has no direct experience, you have such strong attitudes (against it).


-Ted

NZConvertible

For me, an engine should idle unassisted all the time, no matter what the temp. Any mods I do to the TB will only be to the secondary throttle plates and won’t touch the fast-idle system.

Rpeck

The problem I have with the idea of the TB mod is;

Its a **** rig to me ... anytime I am drilling holes where they were not intended to be drilled, and using JB weld as a cure all... I walk away, to hell with that. more power or not, the last thing I want to do is depend on epoxy & PT tape to make my car run properly. If someone made a propper kit for this mod.. I would prolly gladly buy it. But a **** rig for a few HP, no thx.

RETed

Yeah, I know the problem - where ever you're getting your information from, it has nothing to do with drilling holes.


-Ted

Rpeck

Sorry TED, didnt mean to upset you ... haha but drilling holes & tapping is the same thing to me. I am not comfortable with "tapping" anything in a permanent fixture of my car. Once again I call this a **** rig. then again that is just my opinion & the only reason I will not do this mod, I am sure is has a benefit that might be worth it if done properly. But not worth the risk to me .. being the first time I will have attepted this.

RETed

/RANT ON
I'm getting sick and tired of all these peanut gallery comments from people who are incompetent and don't have any direct experience doing ****.&nbsp The write-up is on my web site.&nbsp If you're got a problem with any of the steps, don't do it.&nbsp Don't call it "****" or "rigged" cause you're too incompetent to do this job; just because you're incompetent, don't assume others are like you.&nbsp Those who got ZERO experience with this mod, you've got no qualification to comment on it - is this going to turn into a "my friend's cousin's uncle's sister-in-law said this" argument?&nbsp Sure, I've had a few people complain it wasn't worth the effort, but the MAJORITY have been positive.&nbsp Look at all the positive comments so far in the thread; the negative ones are from people who THINK they have something useful to add, but in actuality have no qualification to do so cause they don't have direct experience, make some assinine assumptions, or have the coordination of a gorilla to be able to handle basic hand tools.&nbsp GO MAKE STUPID COMMENTS ON SOME OTHER THREAD - don't be post-whoring on this thread, cause I'm not going to let you post nonsense in here.&nbsp You've obviously showed lack of knowledge of fluid dynamics and how the stock throttle body operates.&nbsp The stock throttle body was design for idiots like you who can't drive smoothly and need some cold start idle compensation so you don't **** the car up; that's fine - Mazda designed it for YOU.

Otherwise, the double throttle just introduces another obstruction to smooth air flow through the throttle body (less smooth air flow = less power, duh), heats up the throttle body unnecessarily (heat = less power, duh), adds complexity to the throttle body system and coolant system by adding two more coolant hoses which can spring leaks and overheat the motor.&nbsp This is not for everyone - only competent and logically thinking people need apply.
/RANT OFF



-Ted

NZConvertible

Whoa Ted!

Point well made, but it might be time to switch to decaf...

Rpeck

Ted, I fully understand your statement and your reply’s. However the original question is “the TB mod worth it?” If someone is asking that question .. they have NOT done it. I am merely posting my suggestion about his question, as we all have the right to do on a public forum.

Also I take great offence to you saying peanut gallery. We are all here to help each other, and for you to demean other members including myself… just cause you assume you know everything is not proper conduct in reality .. much less a public place of opinionative display.

I by no means question you knowledge, or love for the great car we all drive. However you need to keep in mind not all of us have a life the revolves around a car. Some of us do this as a hobby .. and I for one prefer constructive criticism as opposed to a post that completely lacks any relevance but to shoot down other posters comments.