its closer to 4750 vs 4000 if i remember your cars weight right. its like 20% more, if it’s a variable it will make a difference how big I don’t know.
[quote=“westwest888,post:60,topic:6871”]
Do you honestly think your car will run 13’s on race gas/tune with someone who can drive a stick car properly at the dragstrip?
that’s kinda the point that I made a few days ago. remember…when you called me ridiculous and arrogant?
apology accepted.
Ironically you refer to dyno obsession, yet you’re the only one in the thread who has had ‘a few’ dynos done of his car. How about that?
I don’t believe anything I read on here unless I can verify it myself. I try lots of things out and measure, either with equipment or by flogging it around a track and observing the emergent behaviors. I like to provide some evidence for the skeptical. I had planned on testing only on a single dyno but the guy at Thunderhill sold his when he couldn’t get enough customers. Shit happens.
The truth is I suck at launching and the fast 1-2 shift and the fast 2-3 shift, so I’m unlikely to show the potential in the 1/4 mile that the car has (it’d be like russian roulette with my clutch and by the 6th launch we’d have a problem). My 3-4 and 4-3 heel toe are quite smooth from doing it hundreds of thousands of times on a road course. I don’t know what else to say. It’s really hard to practice at the drag strip when you only get to do like 7 launches in 4 hours. It would take years to get good at it, and by then I might be onto a fast car with a proper PDK.
Revo won’t blow the OP’s engine. He should get an APR CPS and use pump 100 octane fuel on the 93 program.
Ignoring everything else you keep saying to get a cooling upgrade and then run 100oct on the 93 map. Don’t you think that there should be no conditions to being able to safely flog on the car for a bit assuming you run the map appropriate for the gas in the tank?
Whoa…say what? A “lip” spoiler with “insane” downforce?
A lip spoiler? Really? Do tell. Or, was this a joke that I just didn’t get? I mean, we’re talking about those little carbon fiber pieces that you glue on the surface of the deck lid???
Maybe you’ve got something else, but if it’s insane downforce, I’m guessing it’s buckling your trunk lid. ???
Rear wings raised to roofline height and tied into the chassis will create real usable downforce with minimal drag (depending on design). Lip spoilers??? Surely you jest.
You’re always mixing 2-8 gallons of 91 or 93 street fuel with 8-14 gallons of pump race fuel at 99-101 octane. Honestly, I’m one of the only guys at the track regularly filling up on $9 a gallon gas. It costs me $35-40 per track session to do this, up to $250-$300 for a weekend. The only way I can justify it is I get nearly free track time for instructing. I also think it’s a good insurance policy on the motor to use very stable fuel if I’m going to flog it all day, especially when the ambient temp is over 90 degrees. When it’s cold in the winter track schools the system performs a lot better, which is rather enjoyable. It gives me a huge advantage on NA motors like the 4.2 V8 and the 5.2 V10, and I like running with supercars in my sports sedan.
I’ve run on the 100 octane program but I don’t think it’s really worth it unless you’ve got something like 104-106 octane in the tank. That stuff is like $100 for 5 gallons, so roughly 150% more expensive. You’d be spending like $700 on gas. The engine certainly responds better on this program, I just hesitate to enable it on Saturday while I have a mix of street fuel in the system. By Sunday I might not even care.
I was joking. At 130 MPH a B8 generates a small amount of aerodynamic lift on the rear axle, perhaps around 100-150 pounds. The RS5 mitigates this with active aero, a clever way of getting downforce when you need it without worrying about drag. With the S4 all we can do is change the airflow on the decklid. Without a wind tunnel, we can get the downforce that neurtalizes the lift but we’ll likely introduce some drag with a crude design.
I’ll be sure we’re diligent in entering the weight next time, which is 3770 on a full tank with no one in the car for my vehicle. We’ll see if the torque changes.