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Old May 3, 2007 | 11:15 PM
  #1  
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Default LT's, CAI, Tune

I been lurking around these here threads for quite some time. I have searched counteless times on the best CAI and LT's, etc. But have finally decided on a route to go. For the benefit of all I wanted to share what I have and what I am doing in case someone ever uses the "search" button

I have:
- Yellow C6
- 2007 A6 5700 miles
- *No starting dyno numbers, but likely standard A6 RWHP 335 to 345*

Am Doing:
- Kooks LT's
- BBK Intake Part No.: 0015993 *Relatively new product. I have searched the forum for information regarding HP gains with this intake and didn't see anything. Dynotech Tuners out of Chesapeake VA recommended it. They do this stuff all day long, so I went with it.*
- Tune *Should improve shift points and TM with the A6. Will not be so aggressive as to produce detonation.*


I guess you could say I am getting the "basics". I'm also leaving the stock exhaust on the car, as the LT's should increase the noise level (good thing!) and of course the power. I expect 375 to 385 at the rear wheels with this setup based on research from the forums. I'll post actual gains after installation.
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Old May 3, 2007 | 11:25 PM
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Sounds like great stuff!
You sure have done Your homework!!
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Old May 3, 2007 | 11:57 PM
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Just my opinion but when it comes to cold air intakes, unless it shows track gains, no matter what a dyno says, it's probably not worth it. Of course to each his own and the BBK piece looks nice. Hopefully it works as advertised. Regardless, you'll like the gains from the long-tubes.
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Old May 4, 2007 | 12:40 AM
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LG's, K&N inlet, and 160 stat: 360 rwtq and 360 rwhp with no tune with an A6.
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Old May 4, 2007 | 08:48 AM
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Originally Posted by adamante82
I been lurking around these here threads for quite some time. I have searched counteless times on the best CAI and LT's, etc. But have finally decided on a route to go. For the benefit of all I wanted to share what I have and what I am doing in case someone ever uses the "search" button

I have:
- Yellow C6
- 2007 A6 5700 miles
- *No starting dyno numbers, but likely standard A6 RWHP 335 to 345*

Am Doing:
- Kooks LT's
- BBK Intake Part No.: 0015993 *Relatively new product. I have searched the forum for information regarding HP gains with this intake and didn't see anything. Dynotech Tuners out of Chesapeake VA recommended it. They do this stuff all day long, so I went with it.*
- Tune *Should improve shift points and TM with the A6. Will not be so aggressive as to produce detonation.*


I guess you could say I am getting the "basics". I'm also leaving the stock exhaust on the car, as the LT's should increase the noise level (good thing!) and of course the power. I expect 375 to 385 at the rear wheels with this setup based on research from the forums. I'll post actual gains after installation.
I have LG lt's, honker, and a dyno tune on my '07 C6 Z51 MN6 and the numbers were 390rwhp / 393rwtq. The tuner informed that he had the numbers up slightly higher, but tuned it back a bit for reliability and safety since mine is a daily driver, which I preferred. My Z51 did not have a stock baseline dyno pull, but the tuner informed that most likely the car lost HP and TQ with the addition on the CAI and LT's because it dyno'd at 325rwhp before the tune and gained almost 70 hp after the tune. I would expect slightly under that with the A6. The tuner who dyno'd my Z51 said that he has found from the hundreds of LS2 tunes he's done that Auto's lose about 20% of the crank HP through the drivetrain, where manuals lose 17%.

Last edited by jdenny21; May 4, 2007 at 08:51 AM.
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Old May 4, 2007 | 08:55 AM
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Sounds like we're on the same track. American racing headers, 160 stat, K&N aircharger, and a tune on a Z06. Was at 445 rwhp stock (stingy dyno) with K&N went to 467, with tune (not finished yet) went to 480. Will redyno soon with headers and tune part II.
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Old May 4, 2007 | 09:56 AM
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375 seems awefully high for an A6 with just those mod. I have a MN6, 379rwhp with ported intake, headers and VaraRam.
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Old May 4, 2007 | 10:02 AM
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Originally Posted by Fore58
375 seems awefully high for an A6 with just those mod. I have a MN6, 379rwhp with ported intake, headers and VaraRam.
Dynojets typically report higher results than a Mustang dyno. Still, excellent results.
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Old May 4, 2007 | 05:06 PM
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Thanks for the input all around. Whatever numbers I do produce, I'm posting.

The CAI search was exhausting! There were so many opinions all around on what does increase the cars performance to what does not. Track performance in the 1/4 is the best indicator. I do realize I have no data for the BBK...so I am taking a bit of a risk. If it works out well or not well, everyone here will know about it.

Just learned I may be going from Kooks to another brand of LT's. Has to do with availability and price. No biggie.
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Old May 4, 2007 | 05:10 PM
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Originally Posted by adamante82
Thanks for the input all around. Whatever numbers I do produce, I'm posting.

The CAI search was exhausting! There were so many opinions all around on what does increase the cars performance to what does not. Track performance in the 1/4 is the best indicator. I do realize I have no data for the BBK...so I am taking a bit of a risk. If it works out well or not well, everyone here will know about it.

Just learned I may be going from Kooks to another brand of LT's. Has to do with availability and price. No biggie.
Don't be disappointed if you only make in the 365 range, that's pretty typical for an A6 with headers. The A6 is the worse for dynos because there is no 1 to 1 gear (dyno in 4th which is 1.15) and there is no way to lock up the converter. A dyno trick that a lot of A4 owners do is to lock up the converter which makes it closer to a manual as far as efficiency. The good news is that the A6 is a great drag strip tranny as the quickest bone stock Vette is an A6.

As far as other header brands, I really like the full race merge collectors, so if it were me, the only three brands I would use are Kooks, LG Pro's, or American Racing Headers.

Good luck,
Glenn
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Old May 4, 2007 | 06:25 PM
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Good Luck with the numbers . But your better off seeing what the car does at the track than READ into the numbers too much. My car was dynoed on a dynojet and my base was 332ftlbs and 331hp with the vararam,after the bolt ons and the tune i gained 20ftlbs and 25hp at the rears. But at the track is wear i gained over stock
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Old May 4, 2007 | 06:26 PM
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I hit 370/370 on my A6 with LG longtubes, CAI and a tune. This was on LG's dyno in Wylie. I'm very happy with the set up. Its a totally different car now.
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Old May 5, 2007 | 08:17 AM
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I have the Melrose smooth flow headers, VR, COW tune with no dyno numbers. Went to the track pulled 12.50 at 115 MPH three times and I don't even know how to drag race. I don't know if that is good or not. I will be trying again. I used the competition driving mode the tires didn't spin. I thought about taking the traction control off and trying that. But ended up saving that for another day.

Any thoughts?
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Old May 5, 2007 | 08:37 AM
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Originally Posted by Capt
I have the Melrose smooth flow headers, VR, COW tune with no dyno numbers. Went to the track pulled 12.50 at 115 MPH three times and I don't even know how to drag race. I don't know if that is good or not. I will be trying again. I used the competition driving mode the tires didn't spin. I thought about taking the traction control off and trying that. But ended up saving that for another day.

Any thoughts?
Based on what i have read, great numbers.

Go the lasat page of the first sticky post in C6 Tech forum.
http://forums.corvetteforum.com/show...214565&page=85

The 1/4 miles numbers are posted there.

Kermooni.
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Old May 9, 2007 | 05:02 PM
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Not that any of you are monitoring this thread for updates...

But wanted to add one anyway

Kooks LT's it is and they are on order. Should be in the shop ready to be fixed up next week. There were some issues with the price of the headers. Dyno tuned Performance quoted me a price but they couldn't get them as cheap as they quoted. So, they honored their quote.

The big thing is that it gives me the impression I'm working with people who look out for their customers. The issues that have come up, they have handled really well. This is good!
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Old May 10, 2007 | 11:46 PM
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Originally Posted by adamante82
Not that any of you are monitoring this thread for updates...

But wanted to add one anyway

Kooks LT's it is and they are on order. Should be in the shop ready to be fixed up next week. There were some issues with the price of the headers. Dyno tuned Performance quoted me a price but they couldn't get them as cheap as they quoted. So, they honored their quote.

The big thing is that it gives me the impression I'm working with people who look out for their customers. The issues that have come up, they have handled really well. This is good!
Great choice of Headers ...
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Old May 12, 2007 | 02:13 PM
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Originally Posted by Rich S.
I hit 370/370 on my A6 with LG longtubes, CAI and a tune. This was on LG's dyno in Wylie. I'm very happy with the set up. Its a totally different car now.
Hey RichS. I live nearby and have been thinking of something like this for my A6. What CAI did you get, and how much did you spend for these mods together? Do you use it as a daily driver? What about gas mileage changes? You kept the factory exhaust behind the headers?
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Old May 12, 2007 | 03:11 PM
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Originally Posted by Fore58
375 seems awefully high . . . just those mod. I have a MN6, 379rwhp with ported intake, headers and VaraRam.
365 you will make I say

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Old May 18, 2007 | 12:40 AM
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Hey all, everything was installed! Great day it is. I will tell you what I have and then ask/say some stuff.

Kooks LT's, BBK intake, HP tune.

Dyno'd in 4th gear on a Dynomax (I think that's the name of it). 381 RWHP...and torque will come soon. I left the sheet in the car.

My comments/questions:

1. Odd..first pull was in 3rd, showing less HP. Second pull in 4th and after a tune final pull in 4th. But according to some advice the best gear to do a dyno in the A6 is 4th.

2. Car sounds different. I like it. I have the stock exhaust but the headers make a noise all unto their own it seems. (A good noise!) If anyone is local and wants to hear, let me know.

3. I honestly think my numbers are a little too high...

4. What do I do next?
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Old May 18, 2007 | 01:51 AM
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Originally Posted by adamante82
Hey all, everything was installed! Great day it is. I will tell you what I have and then ask/say some stuff.

Kooks LT's, BBK intake, HP tune.

Dyno'd in 4th gear on a Dynomax (I think that's the name of it). 381 RWHP...and torque will come soon. I left the sheet in the car.

My comments/questions:

1. Odd..first pull was in 3rd, showing less HP. Second pull in 4th and after a tune final pull in 4th. But according to some advice the best gear to do a dyno in the A6 is 4th.

2. Car sounds different. I like it. I have the stock exhaust but the headers make a noise all unto their own it seems. (A good noise!) If anyone is local and wants to hear, let me know.

3. I honestly think my numbers are a little too high...

4. What do I do next?
Excellent job. Yes, you will make more power in 4th, it's closer to 1 to 1 than 3rd, you have a little less loss through the tranny and less acceleration losses.

The Dynomax removes the rear wheels and hooks the rear axles directly to the dyno. These dynos are great, but they do run high because you don't have the loss of accelerating the rear wheels and tires and any loss between the tire and roller. I'm guessing you would have been around 370 on a Dynojet, but we'll never know. The important thing with any dyno is to do a before and after run so you can see the delta.

I would be very interested how much you picked up just with the tune. I'm hoping the tuner at least did a pull before he started tuning.
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