ported throttle body worth it?
Team Owner
Joined: Dec 2008
Posts: 35,874
Likes: 1,600
From: Honolulu HI
NO...I'm not sure who "they" are, but that is just not true. 1 or 2 HP maybe, and it's not peak HP...it's HP along the power band. Your intake opening is 78mm though, so no point in going with an 80mm unit.
Drifting
Joined: May 2004
Posts: 1,822
Likes: 2
From: San Clemente CA
I wouldn't bother with a separate TB. I found a stock 78mm, used unit on this forum ported by Shaner and I immediately noticed improved throttle-response. As for hp gains, I'd say very minimal though.
Race Director
Joined: Mar 2004
Posts: 12,466
Likes: 886
From: Fort Wayne IN
2025 C5 of the Year Finalist - Modified
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Done right, it helps. Done wrong, and you get issues.
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
Safety Car
Joined: Oct 2007
Posts: 3,903
Likes: 1
From: You know your drunk when you swerve to miss the tree then you realize its your air freshener! Covington Ga
Le Mans Master
Joined: May 2005
Posts: 6,366
Likes: 249
From: Fort Lauderdale, Florida
I did my own on a previous C5 I owned. While I didn't have any negative issues after doing it I also didn't notice any real positive difference either. BTW, I do have all the proper tools for doing it. It was a challenge I enjoyed doing but I wouldn't waste my time doing it again to my present modded C5 Z06. I definetely wouldn't waste any money on one from someone else.
Drifting
Joined: Feb 2004
Posts: 1,250
Likes: 0
From: Katy TX
St. Jude Donor '08-'09
I ordered mine from Vmax and i will be the first one to tell you that the throttle response was MUCH better. It was well worth what i paid for it! England Green set everything after the install, and it changed their mind also as to whether it was worth it or not. They also noticed the increased throotle response.
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Pro
Joined: May 2004
Posts: 551
Likes: 19
From: Morgantown WV
I would advise against it. I installed a ported TB from a known forum vendor. I immediately had a fast idle probem that had be be corrected by a tuner. After the tuner got done with it it idled normally with no real SOTP performance increase. If I had to do it over again I'd spend the money on taking my wife out to dinner. More fun, less frustration and my car would run the same!
Drifting
Joined: Feb 2004
Posts: 1,250
Likes: 0
From: Katy TX
St. Jude Donor '08-'09
I would advise against it. I installed a ported TB from a known forum vendor. I immediately had a fast idle probem that had be be corrected by a tuner. After the tuner got done with it it idled normally with no real SOTP performance increase. If I had to do it over again I'd spend the money on taking my wife out to dinner. More fun, less frustration and my car would run the same!
Again, each situation is different, mod's are different.
Burning Brakes
Joined: Apr 2008
Posts: 877
Likes: 4
From: Nouvelle Ecosse
Yes get the ported TB...probably like 2-5 hp gain @ the most...but it does improve throttle response across the board.(to clarify....if your peak hp is 320rwhp...and you add a ported Tb...your peak Hp is probably gonna be 322rwhp, which would be within the margin of error for most dynos, however there maybe more Hp gained at various points along your power curve....and especially down in the low end)
To people that are having issues with the ported TBs.....you can do a search on here for the "idle relearn procedure" this will cure your engine lights and high idles @ cold start.....the engine needs to be calibrated for the additional airflow. A tuner is not necessary...but can definitely facilitate this.
To the nay-sayers.....the engine needs to be calibrated for the additional airflow....more air in + more air out = power.
To people that are having issues with the ported TBs.....you can do a search on here for the "idle relearn procedure" this will cure your engine lights and high idles @ cold start.....the engine needs to be calibrated for the additional airflow. A tuner is not necessary...but can definitely facilitate this.
To the nay-sayers.....the engine needs to be calibrated for the additional airflow....more air in + more air out = power.
Last edited by JCamaro; Jan 10, 2010 at 12:22 AM.
Pro
Joined: May 2004
Posts: 551
Likes: 19
From: Morgantown WV
[QUOTE=JCamaro;1572703632]Yes get the ported TB...probably like 2-5 hp gain @ the most...but it does improve throttle response across the board.(to clarify....if your peak hp is 320rwhp...and you add a ported Tb...your peak Hp is probably gonna be 322rwhp, which would be within the margin of error for most dynos, however there maybe more Hp gained at various points along your power curve....and especially down in the low end)
Like I said. No real SOTP gains.
Like I said. No real SOTP gains.
