Engine, Intake, Exhaust Modifications to your Normally Aspirated Hyundai engine. Cold Air Intakes, Spark Plugs/wires, Cat back Exhaust...etc.

@$#& This Throttle Body...

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Old 08-01-2005 | 03:49 PM
  #11  
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First, where are you from? (It would be nice if you fill that info on your profile) because you are talking about squeezing intake path from a 3" CAI to the TB (so I asume you don't have the 2,5" MAF US Tibs use). The other thing is; if it is not a mechanical failure of the TB, are you sure it's not enough to change the TPS (throttle position sensor)? Because it's a well known problem on our cars that that piece does not last too long. I am really not sure about your problem, because if the position for the TPS is bad from the begining, it would have caused problems since day 1, and not after some days months...
I'd try changing the TPS alone and follow it up to see if the problems go away.

BTW; I have a System GTR TB installed since last march, and it works... well I'd say great, but having read this thread I think the cause of the throttle "sticking" at idle might be the butterfly sticking... however, that's the only problem and it only occurs when cold (first start of the day) and not after a few minutes even when I stop or release throttle, so it's not a big hassle. I am not sure either if it IS in fact the butterfly, it could be something with the cables also.
Old 08-01-2005 | 04:36 PM
  #12  
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QUOTE (Shark Pimp 69 @ Aug 1 2005, 03:16 PM)
Listen fellas, I know what the problem is, the female tps connector need to be rotated counterclockwise more than where the screw holes are drilled at.


???

Okay, LISTEN SHARK PIMP, you asked for our advise on your problem, Thoughts, Opinions, and such, so answer the questions we've asked, as there are some KNOWN issues here.

QUOTE
It causes serious computer malfunction.


Oh? You didn't say it gave you a CEL up above, so how is it a serious computer malfunction? Actually, to me it sounds like your TPS is bad. They do go bad you know, and 3/4 of the folks with issues after a TB swap just need to replace the TPS. But you knew that right?

QUOTE
I'm not retatrded, it's not the throttle cable.


No one said you were, this is how we help solve the problems. We get folks in here all the time asking why their car doesn't run worth a damn after installing a CAI. We ask them a set of questions, it's usually the MAF was put on in the wrong direction.

We get about 90% of them being assholes and telling us that "YES, I'M NOT STUPID" that it's on the correct way. Then when they post a picture, low and behold, it's on backwards.

So, as I asked above...

QUOTE (REDZMAN @ Aug 1 2005, 12:23 PM)
Which SR TB is it? The old OEM lookin one or the System GTR one that they sell now? Did you adjust your throttle cable after you installed it? Did you adjust your idle screw?


This can help us diagnose the problem.

QUOTE
It has nothing to do with anything sticking.


Probably not, but don't be so defensive, folks are trying to help. It COULD be sticking though, did you take the time to see if the butterfly is scraping on the walls at all? Did you take the butterfly out and try cleaning the edges up a bit?

QUOTE
A team of specialistes looked at this thing hooked it up to computers and finally figure out what it realy was. It causes the fuel ratio to be off from the 8-8.5% it's suppost to be and screws up the car.


A team of specalists? Hyundai Specialists? Tiburon owners? How do you hook the BBTB up to a computer? It sounds like one of the following to me.

1. You got SR's old style BBTB that is MFR'd at 58MM, they are known to have issues with TPS alignment (search, it's been talked about), there are work arounds and this one looks OEM.

2. You've got a bad TPS, or the TPS harness. Check to see what TPS you have, the older ones (Mad John knows which one, just posted about it yesterday) have a tendancy to go bad right when you remove them, this happened to my second tib. New TPS fixed everything.

QUOTE
We've tried rotating in ourselves in various ways, but now how much you rotate it, it eventually goes back to doing it again after a month or so.


That makes it sound like it's your ECU or a sensor that's bad. I still say TPS. Do both TPS screws fully seat?

QUOTE
So, how much horsepower do you think I'll lose for the stock swap.


maybe 2 or 3. Depends. Was your IM bored?

QUOTE (Zman @ Aug 1 2005, 03:49 PM)
First, where are you from? (It would be nice if you fill that info on your profile)


Word, fill out your profile, it's forum policy. It also answers a lot of questions for us.

QUOTE
I'd try changing the TPS alone and follow it up to see if the problems go away.


Me too, if it doesn't fix it, return the new TPS. It's simple man, Cysc00, a member here, had his 1st Gen tib (My new one) down for 18 months because of a horrible problem, we couldn't figure it out for anything, neither could Hyundai. He gave up and we started trying some stuff out of the blue one day, swapped the TPS, and it works fine now.

And that didn't take any team of specalists hooking the TPS up to a PC.

Still wanna know how to do that...


EDIT!

Damnit, I KNEW I saw you on the forums somewhere before.

http://www.rdtiburon.com/index.php?showtopic=7038&st=0

YOU'VE HAD CEL's for a TPS in the past!!!
Old 08-01-2005 | 04:38 PM
  #13  
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The new BBTB from system , i dont' think sharkracing is having the stock, they are getting within 05 days time. They mentioned to me these are their new BBTB systems and they are agents for systems BBTB.
Old 08-01-2005 | 04:47 PM
  #14  
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What I think is this.
The butterfly is to big, not sideways (it wouldn't go into the bore) just the height, which is causing it to close to early. this will mean that even though the butterfly is closed, the TPS shows that the throttle is still open b/c it can't phisically retunr to the idle position. You will need to mod your butterfly so that it alows the shaft to rotate to the correct position.
Old 08-01-2005 | 11:13 PM
  #15  
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Alright, first of all, I'm living in here in Orlando Fl. Second of all, I must have seemed rude in the last post, my nature I guess, unintentional. But if you had gone through every possible thing that could be wrong with this thing 5 times over like I have, you'd understand my confidence. Change the TPS sensor! Great idea. We did it three times. In less than three months. Always with the same result. I posted some months ago about this problem desperately trying to figure out what it was. Doing all the things you told me then, check the butterfly, is it too big, is too small, is it sticking. Nope. Checked all those... 5 times. Is it the sensor? Female part? Male part? Wiring!!! Replace it all!!!!!!! 5 times! Nope. Throttle cable! Too tight! Too loose! Twisted? Bent? Out of position? Fix it! Check it!! 5 times! No avail. By now the Hyundai dealership's getting a little frustrated over a part they didn't make but they're patient. They actually send the throttle body to Miami where their specialists could hook it up to this big ol' computer dyno lookin thingy to see if they can figure it out. (The mechanic said it was a "computer dyno lookin thingy" when I asked.) And they do. The computer says the fuel mixture is way under where it's supposed to be, in addition, the two holes that are on the edge of the female TPS sensor that screw into the main part of the throttle body were not machined right. If you could picture them fixed to a circle they needed to be rotated about one centimeter counter clock wise. So they tapped out the brass fittings on a new TPS sensor around the screw holes on the female and that gave them enough play to rotate it. And it worked! The car ran great!!! For about a month and a half, then out of no where the problem slowly get's worse and worse till eventually the CEL pops again. Go to Hyundai, they say, "Well the TPS sensors go bad from time to time we'll just put a new one in. They do. Doesn't work. One of the mechanics get's an idea, JB weld. He unscrews the TPS rotates it past where the screw holes can't even be seen, welds it down, fires up the car, everythings perfect!!! Go Hyundai! It just needed to be rotated a bit more. Then a few weeks later the problem slowly works it's way back into the car. And that's where I am now. The CEL hasn't popped yet, but it's a b**** to drive, and I'm not willing to take my car back to the service department for the same thing they've fixed and analyzed a billion times, for free, that's completely not their fault. My warrantee was voided LONG ago and they continue to fix my car for free with a smile. I won't do it again. Oh yeah and the TB is the new Shark Racing GTR 60 mm bore. And I don't know the IM bore, it's the AirRam IM from K-Spec. So, sorry if I seemed rude or impatient. You probably understand now my frustrations with this. So, what I really wanted to know, is how much horse power I would lose going back to stock. I wanted thoughts, opinions on that, I should have specified. My bad. You say 2-3 ponys maybe... maybe more? Or maybe less? And I love to race 1/4 miles at the track. What's your opinion on track cons going to stock TB? Thanx for all your help. I do appreciate it.

Yes, The Shark Pimp
Old 08-01-2005 | 11:20 PM
  #16  
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Now that's better.

LOL

I know how frustrated you are, what I'd LIKE to do is find someone in your area that can help you look at it from our point of view.

With what you've told me, you are right, your BBTB is bad, probably just set it up wrong from the factory. Have you had any succesful contact with SR? Maybe they will get you a trade in or something? Get ahold of someone from your area on the forums and get them to swap TB's with you for an hour or two, or maybe a week. If the problem develops on their car, it's the TB> If not, it's something on yours.

We are here to help you figure it out brotha.
Old 08-01-2005 | 11:24 PM
  #17  
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i feel you pain brother we have all been there at one point or another. i am in korea but i have an internet phone at the pad so. give me a ring 903-258-9304 and i will do what i can to help you out fing02.gif
Old 08-02-2005 | 12:04 AM
  #18  
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Right on, thanx for the help desk number. I think that Zoned is going to help with a swap. Shark Racing fed me a LOT of B.S. They kept telling me to reset the ECU over and over again. And... they also told me to unscrew the tps on both sides a little jiggle the sensor and screw it back down tight again. So I think They already knew they were having problems with that. Bastards. Hey if you know any fella fellas around that I can compare engines with let me know. You guys think the stock swap is going to hurt my 1/4 mile performance significantly?

Thanx,

Shark Pimp
Old 08-03-2005 | 12:18 AM
  #19  
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significantly? no.
but i think you will notice the difference..
ever thought of getting the stock one bored out, can be bored to up to 58mm fing02.gif
Old 08-03-2005 | 08:44 AM
  #20  
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Ehh, the 1/4 mile isn't an accurate measure of anything, except how fast you can do the 1/4 mile.

Contact SR again and tell them you aren't satisfied and that you want to get a new one.

If they don't contact you or work it out, file a BBB complaint.



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