Header and intake gains
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,073
Likes: 43
From: Camdenton Missouri
Header and intake gains
I was going to put headers, cats and a calaway honker intake on my new ls3 w/npp exhaust. Will I gain much out of this without tuning it? or could it be a negative if I do this without a tune?
Appreciate your input.
Thanks
Appreciate your input.
Thanks
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,073
Likes: 43
From: Camdenton Missouri
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
Former Vendor
Joined: Dec 2009
Posts: 3,353
Likes: 166
From: 19804
I just did intake and full exhaust on a 2010 GS a6. With just the vararam and stock tune the car made 376rwhp. Then with longtubes, catted x pipe,NPP catback, vararam, and stock tune the car made 394rwhp. The car was around 12.3 afr after the mods with the stock tune. Ended up making 407 rwhp after tuning.
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Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Instead of assuming and spreading doom and gloom stories, call your dealer and ask what mods they allow. My dealer warrantied any mod they installed including superchargers and extended warranties can honor anything if the tuner you use endorses the mod. I have seen S/C modded cars get a new engine under warranty (Vette Doctors) and I have seen diffs repaired AND upgraded under warranty (Corvettes of Westchester). I saw RacerX's car get a computer replaced and it had H/Cgears/tune...and they knew about the mods. The tech gets tipped and the dealer sells him all his cars (7 that I know of).
Simply go to the dealer that honors warranties on modded cars and buy your car from one that doesnt shaft guys for non-sense.
Dealers get paid for repairs regardless of fault. They arent going to tell a customer to pound pavement if they want repeat sales.
Simply go to the dealer that honors warranties on modded cars and buy your car from one that doesnt shaft guys for non-sense.
Dealers get paid for repairs regardless of fault. They arent going to tell a customer to pound pavement if they want repeat sales.
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,073
Likes: 43
From: Camdenton Missouri
I just did intake and full exhaust on a 2010 GS a6. With just the vararam and stock tune the car made 376rwhp. Then with longtubes, catted x pipe,NPP catback, vararam, and stock tune the car made 394rwhp. The car was around 12.3 afr after the mods with the stock tune. Ended up making 407 rwhp after tuning.
Burning Brakes
Joined: Sep 2004
Posts: 786
Likes: 1
From: Houston Texas
Instead of assuming and spreading doom and gloom stories, call your dealer and ask what mods they allow. My dealer warrantied any mod they installed including superchargers and extended warranties can honor anything if the tuner you use endorses the mod. I have seen S/C modded cars get a new engine under warranty (Vette Doctors) and I have seen diffs repaired AND upgraded under warranty (Corvettes of Westchester). I saw RacerX's car get a computer replaced and it had H/Cgears/tune...and they knew about the mods. The tech gets tipped and the dealer sells him all his cars (7 that I know of).
Simply go to the dealer that honors warranties on modded cars and buy your car from one that doesnt shaft guys for non-sense.
Dealers get paid for repairs regardless of fault. They arent going to tell a customer to pound pavement if they want repeat sales.
Simply go to the dealer that honors warranties on modded cars and buy your car from one that doesnt shaft guys for non-sense.
Dealers get paid for repairs regardless of fault. They arent going to tell a customer to pound pavement if they want repeat sales.
But if your really that concerned about warranty issues, then maybe modding and racing your car isnt really for you anyways. Like they say, sometimes you gotta pay to play. Its a risk some of us take. 100% worth it to me. You make the call.
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,073
Likes: 43
From: Camdenton Missouri
Instead of assuming and spreading doom and gloom stories, call your dealer and ask what mods they allow. My dealer warrantied any mod they installed including superchargers and extended warranties can honor anything if the tuner you use endorses the mod. I have seen S/C modded cars get a new engine under warranty (Vette Doctors) and I have seen diffs repaired AND upgraded under warranty (Corvettes of Westchester). I saw RacerX's car get a computer replaced and it had H/Cgears/tune...and they knew about the mods. The tech gets tipped and the dealer sells him all his cars (7 that I know of).
Simply go to the dealer that honors warranties on modded cars and buy your car from one that doesnt shaft guys for non-sense.
Dealers get paid for repairs regardless of fault. They arent going to tell a customer to pound pavement if they want repeat sales.
Simply go to the dealer that honors warranties on modded cars and buy your car from one that doesnt shaft guys for non-sense.
Dealers get paid for repairs regardless of fault. They arent going to tell a customer to pound pavement if they want repeat sales.
Premium Supporting Vendor
Joined: Dec 1999
Posts: 1,984
Likes: 19
From: Texas Speed TX
Checkout the TSP C6 long tube system, for the money they're just about impossible to beat! We have off-road systems in stock now & will have cat systems late next week! 
http://www.texas-speed.com/shop/item...d=1015&catid=8
http://www.texas-speed.com/shop/item...d=1015&catid=8
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
This was your response to my suggestion of tuning your car if you performed the mods you mentioned in your post. I didn't see Spin's reply as a doom and gloom but a helpful tip to have you check with your dealer you plan on using to service your vette before you mod your car to see how they will treat you should you have an issue down the road.
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
jksvet,
Where are you located?
I am in STL and have an excellent dealer I work with that has one of the best vette Mechanic's in the Midwest, he is very mod friendly as long as you use reputable shop's!
Where are you located?
I am in STL and have an excellent dealer I work with that has one of the best vette Mechanic's in the Midwest, he is very mod friendly as long as you use reputable shop's!
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,073
Likes: 43
From: Camdenton Missouri
Racer
Joined: Dec 2009
Posts: 285
Likes: 1
From: Auburn Alabama
I put a set of dyantech headers w/cats and X pipe dumping out with 3" Z06 pipes/mufflers....while waiting for my tune the car was a beast compared to stock....but a tune IS NEEDED if you start doing work because the factory computer wont account for the work and make you eat gas because of it. I am getting my custome tune and vararam installed today....will post more tomm if you anyone is interested.
Safety Car
Joined: Dec 2009
Posts: 4,754
Likes: 303
I put a set of dyantech headers w/cats and X pipe dumping out with 3" Z06 pipes/mufflers....while waiting for my tune the car was a beast compared to stock....but a tune IS NEEDED if you start doing work because the factory computer wont account for the work and make you eat gas because of it. I am getting my custome tune and vararam installed today....will post more tomm if you anyone is interested.
It looks like the exhaust install mentioned previously w/o a tune leaned the car out nicely to 12:1-ish... do you know it was running rich before the tune?
I'd like to see your untuned dyno vs. your tuned dyno A/F
Thread Starter
Burning Brakes
Joined: Aug 2009
Posts: 1,073
Likes: 43
From: Camdenton Missouri
I put a set of dyantech headers w/cats and X pipe dumping out with 3" Z06 pipes/mufflers....while waiting for my tune the car was a beast compared to stock....but a tune IS NEEDED if you start doing work because the factory computer wont account for the work and make you eat gas because of it. I am getting my custome tune and vararam installed today....will post more tomm if you anyone is interested.
Thanks
Drifting
Joined: Oct 2004
Posts: 1,790
Likes: 29
From: STL MO
St. Jude Donor '09-'10
Thanks, you wouldn't be talking about Corvett Bill would you? He's a friend of mine who does the corvette work at one of the larger dealerships. He's also in the process of doing a complete frame off restoration of another friends 66 427. He also built another friend of mines z06. What a beast that thing is. This guy is great. He said he would do my instal for me as well as getting me lined up with a dyno tune. I'm not concerned about him taking care of any issues I may have, but I travel a alot with my cars and was just wondering what the difference would be making the mods without the tune.
I have been freinds with Billy for some time now, great guy not to mention he is an expert when it comes to C5's and C6's not to mention some of the older gems.
I lost power from a cold air intake until I had it tuned, you can verify that with the guy Bill uses for tuning (he did a couple tunes for me last year) I have enjoyed the little bit of modding I have done to this car so far, did Heads & cam to my last vette and hope to control myself a little more with this one.
shoot me a PM if you ever want to shoot the sh_t about cars over a beer.