DIY Throttle Body
Thread Starter
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
DIY Throttle Body
Quick question....
I want to swap out my throttle body with a ported/polished unit. Is this a hard thing to do (for a non-mechanic - but a mechanically inclined person)? I like to do these projects but I won't start something I can't finish.
Do I have to tune it after install? Or is it just bolt on? (Actually, that is the game changer as to this project being a DIY).
Thanks.
I want to swap out my throttle body with a ported/polished unit. Is this a hard thing to do (for a non-mechanic - but a mechanically inclined person)? I like to do these projects but I won't start something I can't finish.
Do I have to tune it after install? Or is it just bolt on? (Actually, that is the game changer as to this project being a DIY).
Thanks.
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
This is a pretty cheap mod, buy one already done from a forum vendor then send them your core and your done! No need to tune for this as long as you put a properly porter unit on.
Instructor
Joined: Jan 2004
Posts: 120
Likes: 0
From: Fort Worth TX
I replaced my stock TB with a VMax throttle body. It's an easy mod and takes about 45 minutes. No special tools required. Great bang for the buck improvement as you will notice crispter throttle response.
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Go for it.
If you're mechanically inclined, it's very simple. Depending on your intake manifold, be sure to check the gasket between the 2 remains intact, once it comes out, it really won't go back in because it stretches & won't fit the orig. indent. A quick fix, oppose to a new gasket, is to cut opposing 45 degrees decreasing the dameter to fit back in the detent & put a dab of orange permatex in to seal for sure. Although a new gasket is better. If maintains placement on the manifold, no worries, put 'em back together, done. I have a FAST intake, a spacer, between TB & they're notorious for leaking. Vacuum leak = PIA, CEL, & headache!
Last edited by Mike V.; Feb 20, 2011 at 01:56 PM.
Drifting
Joined: Feb 2010
Posts: 1,527
Likes: 34
Cut 45*
If you're mechanically inclined, it's very simple. Depending on your intake manifold, be sure to check the gasket between the 2 remains intact, once it comes out, it really won't go back in because it stretches & won't fit the orig. indent. A quick fix, oppose to a new gasket, is to cut opposing 45 degrees decreasing the dameter to fit back in the detent & put a dab of orange permatex in to seal for sure. Although a new gasket is better. If maintains placement on the manifold, no worries, put 'em back together, done. I have a FAST intake, a spacer, between TB & they're notorious for leaking. Vacuum leak = PIA, CEL, & headache!
Please elaborate on:-
1. How you can "cut opposing 45 degrees decreasing the dameter" remove material while decreasing the diameter at the same time?
2. What method you use to make this 45* cut?
3. Will the 45* end cut be concentric?
TIA
Drifting
Joined: Feb 2010
Posts: 1,527
Likes: 34
Quick question....
I want to swap out my throttle body with a ported/polished unit. Is this a hard thing to do (for a non-mechanic - but a mechanically inclined person)? I like to do these projects but I won't start something I can't finish.
Do I have to tune it after install? Or is it just bolt on? (Actually, that is the game changer as to this project being a DIY).
Thanks.
I want to swap out my throttle body with a ported/polished unit. Is this a hard thing to do (for a non-mechanic - but a mechanically inclined person)? I like to do these projects but I won't start something I can't finish.
Do I have to tune it after install? Or is it just bolt on? (Actually, that is the game changer as to this project being a DIY).
Thanks.
1. Disconnect negative battery cable.
2. Disconnect electrical plug from TB motor.
3. Disconnect valve cover vent from accordion tube.
4. Disconnect electrical plug from MAF.
5. Now you can unscrew band clamp and separate air intake from TB.
6. Loosen and remove four bolts that secure TB to intake manifold, take care while removing TB (sealing surface of TB has sharp edges) from intake manifold.
Most people reuse original gasket and normally it takes a set and remains in groove. Just cheap insurance, I like to use new gasket.
With the addition of 89 in/lb of torque on the four TB bolts, re- installation is the reverse of removal process . I believe torque is important as "O" ring type seal requires only .005" squeeze to achieve designed seal.
And to your last question in regards to re tune, if properly ported, only in a few rare cases required.
Hope that helps.
Tech Contributor
Joined: Jul 2002
Posts: 14,949
Likes: 263
From: St. Louis, MO
St. Jude Donor '08
It is a super easy mod....but honestly I think it's a waste of money. I have one and it didn't do anything, dyno, track or even sotp.
You will get a real gain from a CAI if you have a ls2 that you will notice especially in the summer.
You will get a real gain from a CAI if you have a ls2 that you will notice especially in the summer.
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Thread Starter
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
I already have a cai and headers. I am going to do many more mods, but this one seemed like a cool easy project I can do with my son. Kind of a bonding thing!!!!
Tech Contributor
Joined: Jul 2002
Posts: 14,949
Likes: 263
From: St. Louis, MO
St. Jude Donor '08
I noticed nothing and I was looking for some effect. When I got my 05 I noticed the throttle response was sluggish and I was having trouble heel and toe shifting. I tried a throttle body, a tune, nothing made a difference.
Finally after 4 years HP tuners came out with a throttle opening rate table and sure enough the 05's are tuned sluggish from the factory. That finally helped me. Your car isn't tuned sluggish btw. Just 05's.
If you want a mod that will matter and is easy get a fast 102 intake. I helped Justasheet put one on last tues, took about 20 minutes on the dyno to do it. I've done a bunch though and know the tricks. It's easy... Jaysplay just posted up a how to thread.
You feel the fast...the ls2 intake is so bad. The fast is a great mod.
Finally after 4 years HP tuners came out with a throttle opening rate table and sure enough the 05's are tuned sluggish from the factory. That finally helped me. Your car isn't tuned sluggish btw. Just 05's.
If you want a mod that will matter and is easy get a fast 102 intake. I helped Justasheet put one on last tues, took about 20 minutes on the dyno to do it. I've done a bunch though and know the tricks. It's easy... Jaysplay just posted up a how to thread.
You feel the fast...the ls2 intake is so bad. The fast is a great mod.
Thread Starter
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
I think that a FAST intake is too much for me to do myself, and considering the amount of money I have put into my car in the last 5 months (widebooty, headers, fusions, cai, blackout, UD pulley, etc),I did not want to spend another 1+K for the FAST, plus install. I wish I could do that myself, but....
So the PTB is an inexpensive mod that people are saying gives them increased throttle reponsiveness.
Unless you want to help me install it!!! LOL
So the PTB is an inexpensive mod that people are saying gives them increased throttle reponsiveness.
Unless you want to help me install it!!! LOL
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Here goes...
I don't mean to come across as being disrespectful, just want to learn something from your post.
Please elaborate on:-
1. How you can "cut opposing 45 degrees decreasing the dameter" remove material while decreasing the diameter at the same time?
2. What method you use to make this 45* cut?
3. Will the 45* end cut be concentric?
TIA
Please elaborate on:-
1. How you can "cut opposing 45 degrees decreasing the dameter" remove material while decreasing the diameter at the same time?
2. What method you use to make this 45* cut?
3. Will the 45* end cut be concentric?
TIA
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
It looks way more daunting...
I think that a FAST intake is too much for me to do myself, and considering the amount of money I have put into my car in the last 5 months (widebooty, headers, fusions, cai, blackout, UD pulley, etc),I did not want to spend another 1+K for the FAST, plus install. I wish I could do that myself, but....
So the PTB is an inexpensive mod that people are saying gives them increased throttle reponsiveness.
Unless you want to help me install it!!! LOL
So the PTB is an inexpensive mod that people are saying gives them increased throttle reponsiveness.
Unless you want to help me install it!!! LOL
Tech Contributor
Joined: Jul 2002
Posts: 14,949
Likes: 263
From: St. Louis, MO
St. Jude Donor '08
I think that a FAST intake is too much for me to do myself, and considering the amount of money I have put into my car in the last 5 months (widebooty, headers, fusions, cai, blackout, UD pulley, etc),I did not want to spend another 1+K for the FAST, plus install. I wish I could do that myself, but....
So the PTB is an inexpensive mod that people are saying gives them increased throttle reponsiveness.
Unless you want to help me install it!!! LOL
So the PTB is an inexpensive mod that people are saying gives them increased throttle reponsiveness.
Unless you want to help me install it!!! LOL
Check this out. It's not a hard job. If you would like to tackle it and want a hand I could help you out. Horsepower Sales also doesn't charge much for the install if you don't want to tackle it because it's easy.
You do need to tune after you put it on, hps can do that for you. It will change things enough to warrant a tune touch up.
http://forums.corvetteforum.com/c6-t...with-pics.html
Hey Mike V......think the fast is worth it?
Racer
Joined: Oct 2010
Posts: 318
Likes: 0
From: Rosharon TEXAS
Well, as a fellow CPA I hate to see you waste your money. PTB has no dyno gain and sotp gain is dubious at best, and non existent in my case. People very seldom admit a mod they spend money on didn't do anything...and throttle response is pretty hard to measure (unless you heel and toe like I do).
Check this out. It's not a hard job. If you would like to tackle it and want a hand I could help you out. Horsepower Sales also doesn't charge much for the install if you don't want to tackle it because it's easy.
You do need to tune after you put it on, hps can do that for you. It will change things enough to warrant a tune touch up.
http://forums.corvetteforum.com/c6-t...with-pics.html
Hey Mike V......think the fast is worth it?
Check this out. It's not a hard job. If you would like to tackle it and want a hand I could help you out. Horsepower Sales also doesn't charge much for the install if you don't want to tackle it because it's easy.
You do need to tune after you put it on, hps can do that for you. It will change things enough to warrant a tune touch up.
http://forums.corvetteforum.com/c6-t...with-pics.html
Hey Mike V......think the fast is worth it?
Safety Car
Joined: Sep 2007
Posts: 3,502
Likes: 82
Tried this several years ago as one of my first mods...IMHO...waste of money. I swapped my ported TB even-up back to a stock one. The ported one threw off my "ETC Area Scalar" value in the tune and created tuning issues for me. Back to stock...problem resolved.
Thread Starter
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
I will have to wait for that one $$$$!!
Thread Starter
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
By the way..
Joe_G, can I safely assume that we have broken the mold as pocket-protector wearing CPA's?? A nice Vette suits me much better! Where in FTL is your ofiice?
Thread Starter
Go Canes!
Joined: Dec 2009
Posts: 5,975
Likes: 329
From: Boca Raton FL
St. Jude Donor '11-'12-'13-'14-'15-'16-'17-'18-'19-'20-'21
Is this all I would need? Or are other parts involved. It is much more that 100 for the ported tb!!
http://forums.corvetteforum.com/c5-p...ls7-truck.html
http://forums.corvetteforum.com/c5-p...ls7-truck.html
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
I ported an polished my own and installed it with my header and VARARAM install. I had a tune done after all the mods were installed at once so, I can not comment on it specifically.
For me, it was a vey simple install. NO issues what so ever.
BC
For me, it was a vey simple install. NO issues what so ever.
BC
