How can I make my new Challenger consistent?
 

Okay,so its not a legal stocker..sorry..but I figured this would still be the best place to ask. I am in the process of putting together a bracket/ s/street car but still a couple months away.So I've been having a lot of fun racing my 2010 Challenger R/T in the street class.I"ve actually gotten to where I can catch .040 lights with it pretty consistently.but the 60fts and ET,s are everywhere! Its a 2010 5.7 auto bone stock with diablo 93oct C.A.I. tune and a Mopar C.A.I. It has run a best of 8:43 in nice early spring weather and will slow all the way down to 9:20,s in hot weather I understand being faster in good conditions but I cant get close to repeating the same number within a 3-4 hr period
Some of these runs last Sat were riding the brake in competition so I finished them here for comparison. from TT #1 to runner up finish (3 rounds) 9:24 8:99 8:91 9:14 9:20 and its not spinning I can tell you one thing this car feels like it has a trailer hooked up first 100ft..then takes off.if I could get it to run the first 100ft it would FLY.

Re: How can I make my new Challenger consistent?
 

change to a high stall torque converter and rear end ratio if you can ( 4.10 gear ) and headers...just for starter...all depend how much money you want to spend...Luke SS311

Re: How can I make my new Challenger consistent?
 

I wonder if the drive by wire has anything to do with it. do the dragpacks come this way or are they mechanical? I have often wondered about some of these new cars being this way, my Nissan will not repeat worth a darn, wonder if all that computer control stuff is to blame....

Re: How can I make my new Challenger consistent?
 

I use the heat gun on my intake on 07 Hemi Magnum. Keep track of that and use the digital gauge in dash for water temp. Ive done ok with mine being stock with diablo 91 octane tune, everything else stock. 19 lbs in street tires. one decent burnout 13.10 in good air and 13.30 in heat. 1/4 mile stuff. Also with stock converter you can go as high as 1750 rpm, but 1500 rpm works best for me. If you have wheel spin use your programmer to retard timing in the low rpm range. It helps.

Re: How can I make my new Challenger consistent?
 

This car doesnt have a digital temp readout guess I can upgrade to the Diablo trinity. has digital readouts for temp,oil pressure,etc
does your car have traction control or ESP? you turn those off or on?

Re: How can I make my new Challenger consistent?
 

Im not positive about some of the newer models, but I found out, by others and it did work. When you drive to the track, shut it off, and let it cool, a little. not cold, like after tech. Then when you crank it for the first time run, DONT shut it of again. They are designed to run warmer than older cars. This way computer wont recycle, as it would if you shut it off after each run. I could park my truck against a wall for 2 hrs and it wouldnt get any hoter. That was only way, I could get close to dialing it in, and count on it to be close. Try it, it might work on yours, it might not.

Re: How can I make my new Challenger consistent?
 

I don't think you will get a computer controlled car to be consistent. It is constantly adjusting for engine temp, fuel/air ratio, timing, knock, etc. I raced my Jeep Grand Cher. with some success but I never got it to be consistent. The air got better and it slowed down, the air got worse and it sped up. That's not the way it's should work. LOL Maybe some of these guys suggestions will help.

Re: How can I make my new Challenger consistent?
 

go into the evic to see the temp gauge. here is a how to video

[ame="http://www.youtube.com/watch?v=r8eNSU3mzg0"]How To Get To Dodge Hidden EVIC Menu Tutorial - YouTube[/ame]

Re: How can I make my new Challenger consistent?
 

Losing 8 tenths like that could be the anti-knock sensor kicking in, which retards the timing on the fly.

The fix could be as simple as getting a tank full of higher octane gas. Or maybe retard the timing with your Diablo, and dial slower all the time.

Re: How can I make my new Challenger consistent?
 

hopefully your not running street tires. i ran hoosier drag radials on my 300. here are a couple of tips for you.

leave ESP on, at least until you can get the car consistant
use drag radials
let car idle in lanes before each round to get to constant temp

maybe post a few slips for us to look at

good luck

Re: How can I make my new Challenger consistent?
 

I have street tires on the car and I have ESP off. With it on and when a tire would spin it would lose like .3 in ET. If car would spin with ESP off I would manually change shift point by a 100 rpm's and try and get some back. Otherwords I had room for improvement if needed, never ran it to its full potential in bracket mode.Never tried just running it all day, Im sure it would work. Using heat gun on intake after awhile it showed a pattern of heat to ET.

Re: How can I make my new Challenger consistent?
 

I have been leaving the ESP on You guys know Jake Pitt? Runs a Aspen stocker in Div 4 think he has a Cuda now too.
He told me one night "that thing will never go wide open off the line with ESP on" So the next week I turned it off. I do have street tires and try to go around the water but they still get a little wet so I just try to dry em off Well with ESP off this thing has blown off the tires completly and just quits ...still running with CEL but wont move drive or rev scared the CRAP out of me So we push it out of the way i see no parts hanging out the bottom,I cycle the key and all is fine. It set an "ENGINE OVERSPEED" code I swore I would never touch that button again...but......,...

Re: How can I make my new Challenger consistent?
 

do yourself a favor and get some drag radials. weld makes a 17x10 wheel you can use and hoosier makes a 275 40/17 tire

you'll hook up fine with the DRs and you also be able to turn off the ESP. the car will 60 alot more consistantly with th drag radials. get the car consistant and then we'll work on going faster :)

sounds like your car is hitting "limp mode" nothing to worry about now.

here is a video of my car with my son driving. notice the 60ft. i think this run is with my M&H DRs on bogarts but i aslo have hoosiers for the 300. he finished 2nd in pts at the local track his first year driving
[ame="http://www.youtube.com/watch?v=Jkmo6s6kHOk&feature=player_embedded"]750 HP McLaren SLR vs SRT8 300 - Drag Video - 10.31 @ 136 mph (219 kmh) - Road Test TV - YouTube[/ame]