Will a ported throttle body affect the warranty? No tune associated, just a TB swap out. I wouldn't think so, but...

 

If the ported throttlebody were to cause problems with the cars cumputer,throwing codes etc, I doubt if GM will pay the dealer to spend time troubleshooting to find the cause. If the dealer located the problem as your ported throttlebody, I'd bet you would be recieving a bill for the time they spent messing with your car.

 

GM is basically only going to handle warranty efforts on OEM stock vehicles or vehicles that have aftermarket accessories offered by and installed by GM authorized dealers. If there was a problem in your intake or with your motor showing codes specific to intake related issues you could run in to some difficulty. Honestly, a lot is going to hang on how the dealer handles it and their level of comfort/competence with the type of problem that you present to them. In terms of "problems" it could range from as little as the dealer asking you to replace your stock throttle body and charging you for diagnostic time up until they discovered the swapped part all the way to giving you a hard time with the problem once you have made the swap as they may try to argue that the swap contributed to the problem.

With all of that says, is any of this likely? Probably not.

 

Funny thing about modern car, everything seems to be tied together because of the computers.

I installed a Vette-Air scoop on my 09 Z06. Drove it around the neighborhood and all was fine. A coupe of days later I drove it to Branson for dinner and soon after I got on the freeway, at 70-75 MPH, my DIC said "service active handling" and "service traction control" and I got the light on my IP. Car was surging and bucking pretty bad. After dinner, started the car, and all was okay, no problem driving 45 MPH for 4-5 minutes back to the freeway. About a minute after I got up to speed on the freeway, the warnings were back, but this time the CEL came on.

The problems I experienced were due to the air turbulence the scoop was causing across the MAF. I realized that the Vette-Air was most likely the root of my problems. There was nothing wrong with either the traction control or the active handling.

Made a diffuser for the Vette-Air to eliminate the turbulence and now all is fine.

My point is that if I had installed the Vette-Air, waited a while before I had the car at speed and then experienced the problem and taken the car to the dealer to "fix" under warranty, not realizing that my "MOD" was the cause of the problem, I would have gotten a bill and told to remove the Vette-Air and replace the cut shroud with a new one. Then if I still had a problem, they would look at it under warranty. Rightfully so.

 

Assuming that NO codes are thrown, the larger throttle body will definitely affect performace. At the low end (rpm) the air velocity will be decreased and low end performace will be affected (less ram affect). At high end (rpm), more air will be available to the engine for better breathing. There will be a break-even point (rpm) between low end and high end performace, you have to determine what your personal requirements are, dragging or road racing. This will definitely affect the performace. Remember that the system is fairly well "balanced" now, throttle body, intake manifol, valves, exhaust, timing, air/fuel mixture, etc. for good AVERAGE PERFORMACE. Take your choices!

PS: I would not be suprised if you did throw some codes, especially if too radical of an increase. I would suggest that you go back to the "tech/performace section" and the "scan/tune section" for better information. Try the search!

 

I experienced almost nothing when I added a ported TB. I even made two passes at the dragstrip, swapped the TB and made two more passes. It may be that it needed a tuning change to take advantage of the different flow, but I didn't have that capability at that time.

If you are unwilling to modify the stock tune, there is no sense in making other mods that require a tuning tweak to make everything compatable.

 

Thanks for your responses.

For a Moderator: I wasn't thinking when I started this thread. Maybe it does belong in either the tech/performace section or the scan/tune section. Your call to move it.

 

I have always understand that a ported T/B only gave a crisper thottle response, and didn't really add any HP.

Larry

 

I laugh when I read these threads because most mechanical changes provide minimal gains without also altering your cars tune. Guys are willing to change a cam shaft but scared s%$&less to change a tune.

 

A ported TB will give you little HP, and should not affect anything else.

So, I don't see how it can affect the warranty.

 

That is how I understood it and what I would be looking for. More HP is of little concern to me. Ported TB's are really only about $150. Not much of an investment for quicker throttle response, which I noticed in a friend's car with no tune. I have no intention on getting a tune.