C.A.M lays it down!
Le Mans Master
Joined: Oct 2006
Posts: 5,078
Likes: 19
From: Cumming, GA
Guys, as I said, those #'s are shakey at best, & I could be dead wrong at worst. Now that I have had the car at home for 24 hrs & have done a fair amount of around town, stop light to stop light hard acceleration (w/in the confines of the law of course) & high speed highway blasts (55mph max) Lol. The car runs perfect, no pinging, no gagging. The only time you notice the cam is stopped at a light & then when you push it hard. In the middle & at cruise very well mannered. The exhaust is no doubt loud, but w/ the stereo the way I like it can't hear it under normal driving. It's a very nice package, Jeff choose the cam based on my goals & exceeded them. Hats off to Carolina Auto Masters.
I have always been interested in knowing where the a/f is tuned to and the timing used during the run. This helps understand the power level alot better in my opinion.
I personally always pay close attention to my a/f when my tuner is at work. Like to know that he is not leaning the heck out of the car to give me a nice graph.
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Understood, I'll just ask the next time we speak, I assume he'll remember. He only made 2 adjustments from 1st run at 443. Leaned it out a little hit 447, & I think pulled out a little timing to hit 451.5. The numbers for the 3 pulls I'm certain of, less .whatever on the 1st 2.
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
FWIW I scan my drag strip runs...and I had to back off my timing by about 2 degrees and I added about .04 fuel (IIRC) from my best dyno tune to keep my car from pinging and going too lean on the track. I can see my car going leaner in 4th gear down the track as the speed goes from 94 to 130 (I run it out the back door most times).
So I think your point is a good one.
But good tuners know this and I'm sure CAM set it up safely.
So I think your point is a good one.
But good tuners know this and I'm sure CAM set it up safely.
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
Please understand in no way am I bashing your numbers or criticizing Carolina Auto Masters. Just trying to understand how same mods vary from one tuner to another close to 20rwhp.
I have always been interested in knowing where the a/f is tuned to and the timing used during the run. This helps understand the power level alot better in my opinion.
I personally always pay close attention to my a/f when my tuner is at work. Like to know that he is not leaning the heck out of the car to give me a nice graph.
I have always been interested in knowing where the a/f is tuned to and the timing used during the run. This helps understand the power level alot better in my opinion.
I personally always pay close attention to my a/f when my tuner is at work. Like to know that he is not leaning the heck out of the car to give me a nice graph.
Pro
Joined: Oct 2005
Posts: 733
Likes: 0
From: Vanceboro NC
Jeff set my tune up very safely since it's my d.d. as well as track car. I actually sacrificed some HP for the tune as Jeff thought it was for the best. He's not gonna let your car leave outta the shop with an unsafe tune, I can tell you that, whether it hurts HP or not. My car has held up to ungodly abuse and no issues for well over a year and over 150 drag strip passes. Mike, go out, get the vette in some sunshine, and enjoy it, man!
That's just the tune on my car though.
Tech Contributor
Joined: Mar 2003
Posts: 12,094
Likes: 197
From: Colorado Springs, CO
St. Jude Donor '08-'09-'10-'11
Thanks for the info.
This is just a general question but isnt 13.5-14 alittle to lean especially with a VR on the car? My car has always been tuned to 12.5-12.8 range and I made 443rwhp/415rwtq SAE with similar mods and close cam size.
Once the car is rolling and sucking in the amount of air a VR does wouldn't it starting pinging/detonating if tuned on a dyno to that mixture?
This is just a general question but isnt 13.5-14 alittle to lean especially with a VR on the car? My car has always been tuned to 12.5-12.8 range and I made 443rwhp/415rwtq SAE with similar mods and close cam size.
Once the car is rolling and sucking in the amount of air a VR does wouldn't it starting pinging/detonating if tuned on a dyno to that mixture?
13.5 to 14 is too lean and will alter the amount of timing you can run.
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Having a vararam on your car doesnt change the a/f you tune it at. The misconception that the car gets lean at higher speeds is a myth. Like a dry nitrous shot the MAF compensates for any changes air mass from forced air comming in. The commanded PE is always the same or the concept of a dry shot wouldnt work with the MAF adding fuel when its fired. I have a vararam and a permanantly mounted wideband on my car and its the same A/F ratio at any speed when in WOT be it 20mph or 100mph.
13.5 to 14 is too lean and will alter the amount of timing you can run.
13.5 to 14 is too lean and will alter the amount of timing you can run.
I took a good look at the dyno sheets & at the bottom the AFR is listed graphically just like the dyno #s. The ones you posted for me are just tough to read, but I have the original printouts. It appears at 2500rpm it nadirs at 12, climbs to 13 at 3000, & stays a hair above 'til 4000 then dips slightly to at or below 13 out to 7000. This may clear some of this up. Does that sound about right to you?
PS did you get my video on your e-mail? Check it out, i think you'll like it.
Mike V.
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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
I havent had time to look at it yet.
The a/f should be 13:1 unless, as some tuners do, richens up a bit in the TQ peak area (4400-5200) and then leans out again to 13:1. I run 12.8 across the board.
LS3's tend to like being richer and dont seem to show as much gain on the dyno as timing changes do.
The a/f should be 13:1 unless, as some tuners do, richens up a bit in the TQ peak area (4400-5200) and then leans out again to 13:1. I run 12.8 across the board.
LS3's tend to like being richer and dont seem to show as much gain on the dyno as timing changes do.
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
I havent had time to look at it yet.
The a/f should be 13:1 unless, as some tuners do, richens up a bit in the TQ peak area (4400-5200) and then leans out again to 13:1. I run 12.8 across the board.
LS3's tend to like being richer and dont seem to show as much gain on the dyno as timing changes do.
The a/f should be 13:1 unless, as some tuners do, richens up a bit in the TQ peak area (4400-5200) and then leans out again to 13:1. I run 12.8 across the board.
LS3's tend to like being richer and dont seem to show as much gain on the dyno as timing changes do.
Melting Slicks
Joined: Oct 2006
Posts: 2,905
Likes: 1
Since you seem to have "vested interest" in bashing,although you state you're not, I wouldn't take what you say as more than blah blah blah. It's not very professional, if you have a tuning business, to come on and talk bs about another shop, especially in someone's thread who's happy with their car and tune.
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Since you seem to have "vested interest" in bashing,although you state you're not, I wouldn't take what you say as more than blah blah blah. It's not very professional, if you have a tuning business, to come on and talk bs about another shop, especially in someone's thread who's happy with their car and tune.
Pro
Joined: Feb 2006
Posts: 690
Likes: 0
From: VA
Very nice numbers buddy! My car was tuned by Jeff as well. Not a single problem, and I think I`m like number 2 or 3 of the MN6 bolt-on LS2 cars on the top dog list.
As far as dynos go 386rwhp when Jeff tuned it, and I have run 119mph in the 1/4 w/ stock gears, so I would say its right on.
So do you hang out at Bass Pro in Hampton or Jenro`s in VB on saturdays? It should start up soon. I head out there quite often. Also AllThrottleNoBottle has a thread going in the southest section about a track rental at Richmond Dragway on april 29th that a bunch of us are going to. You could always go check it out there. What color is your car?
As far as dynos go 386rwhp when Jeff tuned it, and I have run 119mph in the 1/4 w/ stock gears, so I would say its right on.
So do you hang out at Bass Pro in Hampton or Jenro`s in VB on saturdays? It should start up soon. I head out there quite often. Also AllThrottleNoBottle has a thread going in the southest section about a track rental at Richmond Dragway on april 29th that a bunch of us are going to. You could always go check it out there. What color is your car?
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
Very nice numbers buddy! My car was tuned by Jeff as well. Not a single problem, and I think I`m like number 2 or 3 of the MN6 bolt-on LS2 cars on the top dog list.
As far as dynos go 386rwhp when Jeff tuned it, and I have run 119mph in the 1/4 w/ stock gears, so I would say its right on.
So do you hang out at Bass Pro in Hampton or Jenro`s in VB on saturdays? It should start up soon. I head out there quite often. Also AllThrottleNoBottle has a thread going in the southest section about a track rental at Richmond Dragway on april 29th that a bunch of us are going to. You could always go check it out there. What color is your car?
As far as dynos go 386rwhp when Jeff tuned it, and I have run 119mph in the 1/4 w/ stock gears, so I would say its right on.
So do you hang out at Bass Pro in Hampton or Jenro`s in VB on saturdays? It should start up soon. I head out there quite often. Also AllThrottleNoBottle has a thread going in the southest section about a track rental at Richmond Dragway on april 29th that a bunch of us are going to. You could always go check it out there. What color is your car?
Pro
Joined: Feb 2006
Posts: 690
Likes: 0
From: VA
I was at Jenro's late Sat. (isn't it Genros), anyway, met another vette owner who told me about Hampton (never knew about it), so I'll make it out there too soon. Also, I call Steve (ATNB) & get the info for 4/29, I'ld love to make it, but that's a Tuesday. Thank you for the heads up. BTW, my car's a triple black vert, way tinted windows, & slammed. The next 2 weekends I will be traveling so I won't be around for the local meets.
I wasn`t sure on the spelling either, so I checked, it is Jenro`s. Link: http://search.cityguide.aol.com/hamp...se/v-102618745
I`m sorry on the date, I mistyped. Its 4/25, a friday. Steve puts on a great track rental. Rentals are the best because you can take your time and make as many passes as you want. I made 29 passes at one rental..
I`ll keep an eye out for you, my car was in the prev sig. My name is Mike as well.
Thread Starter
Burning Brakes
Joined: Oct 2006
Posts: 995
Likes: 2
From: Virginia Beach VA
I wasn`t sure on the spelling either, so I checked, it is Jenro`s. Link: http://search.cityguide.aol.com/hamp...se/v-102618745
I`m sorry on the date, I mistyped. Its 4/25, a friday. Steve puts on a great track rental. Rentals are the best because you can take your time and make as many passes as you want. I made 29 passes at one rental..
I`ll keep an eye out for you, my car was in the prev sig. My name is Mike as well.
I`m sorry on the date, I mistyped. Its 4/25, a friday. Steve puts on a great track rental. Rentals are the best because you can take your time and make as many passes as you want. I made 29 passes at one rental..
I`ll keep an eye out for you, my car was in the prev sig. My name is Mike as well.