Tune + Calloway CAI + 160 stat
Melting Slicks
Joined: Aug 2009
Posts: 2,529
Likes: 3
From: Arlington VA
You are the 2nd or 3rd to make the observation that initial #s seem low. What should I have expected?
I've been told that @ the wheels in an A6, I should see ~20% reduction in HP vs the OEM stated #s @ the crank. 20% off 436hp = ~349 and mine came in at 352hp.
Is 20% loss @ the wheels too much in an auto?
I've been told that @ the wheels in an A6, I should see ~20% reduction in HP vs the OEM stated #s @ the crank. 20% off 436hp = ~349 and mine came in at 352hp.
Is 20% loss @ the wheels too much in an auto?
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
Again, we have no idea what he was actually losing at the wheels because no SAE corrected numbers were provided.
The numbers provided for before and after were uncorrected.
It's impossible to make any assumptions off of that data. Uncorrected RWHP could've been low due to heat, humidity, altitude, etc...
The numbers provided for before and after were uncorrected.
It's impossible to make any assumptions off of that data. Uncorrected RWHP could've been low due to heat, humidity, altitude, etc...
Team Owner
Joined: Feb 2001
Posts: 27,254
Likes: 136
From: Short Hills, NJ
Factoring in the extra weight of the GS rims and brakes along with the 2.73 gears might steal 5-8rwhp from those numbers versus a base model LS3 automatic with 2.56 gears...so your baseline numbers might not be quite as far off as we think.
But umm, your after numbers certainly are LOL.
We need to see the dyno numbers for some other A6 Grand Sports.
Thread Starter
Drifting
Joined: May 2010
Posts: 1,274
Likes: 75
From: Fairfield County, CT
Either your tuner got your dyno sheets mixed up with someone who got a cam or intake installed, or he is outright lying to you and fabricating dyno's in order to win future business from you.
Sorry but those numbers are just a fantasy, your car is not making that much power.
Sorry but those numbers are just a fantasy, your car is not making that much power.
Mixing up the sheets is something I hadn't thought of. I have to go back for some other mods so I will use that opportunity to check on this. Tuner is a friend of a friend so even if I thought your 2nd scenario was likely, I would probably let it go. Tune was less than 5 bills. At that price, don't need to open that can of worms.
Good news is that the car feels great, whatever the actual output. Not sure if this is as a result of driving a Volvo S60 all winter while the 'Vette was in storage or the actual gains. Either way, I am not overly concerned with the apparent unlikeliness of the dyno results. I was looking more for an education on tuning than trying to have the baddest hot rod.
Melting Slicks
Joined: Aug 2009
Posts: 2,529
Likes: 3
From: Arlington VA
Good news is that the car feels great, whatever the actual output. Not sure if this is as a result of driving a Volvo S60 all winter while the 'Vette was in storage or the actual gains. Either way, I am not overly concerned with the apparent unlikeliness of the dyno results. I was looking more for an education on tuning than trying to have the baddest hot rod.
You hear people who get Chuck Cow tunes on their A6 say its like a whole new car.
Thread Starter
Drifting
Joined: May 2010
Posts: 1,274
Likes: 75
From: Fairfield County, CT
