I installed my B&G tuned ECU in my Challenger this week. I reported my first impressions in another thread. I was real happy with the new feel of the car, but lets face it, butt dyno's lead to putting ones foot in ones mouth and the track was where I needed to go. Last year I made several runs at Empire Dragway. A member asked in my "first impressions thread what my best run was and although I didn't keep last years slips (due to major disappointment) I remembered rounding up it was 13.3@110. Today I was able to locate an email I had sent to a friend that night and it was specifically 13.297@109.39 with my seasons best 60' time of 2.165. MY freind (Heminator) also races there and he can vouch for how my car ran as he was running generally the same with his IE. To be fair, the tune is not the only new goody going to the track this year. I also added a Hopnot kit and replaced my K&N filtered stock airbox with a Airaid CAI. But, Heminator did the same and our cars have the exact same mods. He was at Empire a week ago and the Hopnot kit and CAI gave him a small improvement, he ran a 13.21 best. DA at the track was +2560 when I arrived and went down to +2230 by the time I left. My first pass resulted in me missing 3rd gear (I recovered quickly) and the end result was a 13.38@108. My second pass I tried coming out at 3600 RPM and flooring it which gave me a large amount of wheel spin (but no hop) resulted in a 13.008@111.53 with a 2.187 60ft. time. See attached slip, car #41. Third pass I decided to try the launch technique that I used last year on my best run. Do a burnout to clean the tread and leave the line at 2200 RPM, let the car bog and go. This yielded a 12.820@109.66 with a 1.961 60ft time. I knew then I was on to something as far as launch technique. On my final run, I brought the launch rpm up to 2300 RPM and this resulted in the nights best 12.753@109.89 with a 60ft time of 1.932. See attached time slip. After that, my friend with a Boss 302 traded cars with me for a couple runs and it was time to go home. There are some who might suggest that the improvement in the 60ft time was from the Hopnot kit but I would refute that. The technique that gave me my best 60ft was the bog and go technique which also gave me my best 60ft last year with no wheel hop. I only had severe wheel hop coming out hard. To be fair to hopnot, it is a great product and I can now do great burnouts with little or no hop. With drag radials, which would allow a hard launch, the hopnot would really shine. However the difference is that with the stock tune the motor bogs and before it takes off there is a noticeable lag. With the B&G tune with the TQ management removed, it bogs, but the car instantly squats and goes far quicker than with the stock tune. After that I also noticed that the bit of lag after shifts before the motor is back on full boil is gone. Empire is a sticky track and I have never barked the tires shifting into third gear on that track with a stock tune. Tonight, except for the missed shift run it barked the tires in third every time. I am going to up the launch speed up to 2400 rpm next time, because I think there is more to be had here. A couple other disadvantages is the bad air customary for that track and the fact that I am 6'4" 292lbs in a car that already too heavy. In conclusion, RB felt that 1/4 mile runs should easily improve 4 tenths with the tune. I think he hit the nail right on the head. Needless to say, I am very pleased with the results I got. Sorry for the crappy iPhone pics.
13.297@109.39 with my seasons best 60' time of 2.165.
also added a Hopnot kit and replaced my K&N filtered stock airbox with a Airaid CAI.
resulted in a 13.008@111.53 with a 2.187 60ft. time.
yielded a 12.820@109.66 with a 1.961 60ft time.
nights best 12.753@109.89 with a 60ft time of 1.932.
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The 13.297 @ 109 and 13.008 @ 111 give a better representation of what the tune/CAI did due to the 60fts being the same. Roughly .29 hundredths decrease. Still a few variables as we don't know if the DAs were the same between the stock run vs the CAI/tune run. The rest is hard to determine that the tune made the difference in the 60ft because the launch techniques kept changing.
I can indeed vouch for Vichammer's times. Both of us consistently have run 13.2-13.3 @ 108-109 at this track. His PB is 13.29.
And a few weeks ago I ran a 13.21 @ 108.57 with a hop not kit, CAI, cat-back, and 180F stat. That is my PB and I weigh about 210.
Last night in crappy air he ripped a 12.82 and backed it up with a 12.75 - on street tires launching with basically no wheelspin. That is a HUGE gain from a tune.
This tune is deceptive because it's so smooth - after driving mine I called Vichammer and left a PM and predicted he was going to run 13 flat - I figured 3 tenths improvement per my butt dyno. He picked up a solid 5 tenths! Wow......
This gain is a combination of throttle calibration, TM eliminination, and power gains. As RB has consistently said, the best dyno is the strip. I understand the need to obsess over dyno runs - if you want that, Jeff will repost his 447/452 with 12.1 AFR. With a dyno rental pull costing $125-$150 around here, I'm taking a pass and hitting the strip for $13 Test/Tune instead. The time slips prove it -this tune delivers the goods big time. B&G really nailed it.
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2011 SRT8 392 IE #88 DWB: M6, 430N, Group II, Mopar Appearance Package
The 13.297 @ 109 and 13.008 @ 111 give a better representation of what the tune/CAI did due to the 60fts being the same.
Not really because here is the key difference - VH was spinning like crazy on that 13.00 @ 111.53 pass with the 2.19 60' time. Last season his best 60' time of 2.165 was with almost zero wheelspin.
His best 60' times with the tune were obtained with no wheelspin and launching at 2300 RPM. Comparing his best untuned and tuned short times with no wheelspin, the tune is worth 2 tenths to 60'. And DA/temps were virtually the same - about 2200'.
And it feels that way too - it pulls much harder out of the hole. There is no throttle / TM lag so noticeable with the stock tune. It just squats down and pulls much harder off idle.
I'll hit the track soon too. My PB with all mods in place (CAI, cat-back, hop not, 180F stat) is 13.21 @ 108.57 with a 2.14 60' time. And VH and I have the same exact mods. I'm predicting 12.8x @ 110.x. Conservatively this tune is worth 4 tenths and 2 MPH.
The 13.297 @ 109 and 13.008 @ 111 give a better representation of what the tune/CAI did due to the 60fts being the same. Roughly .29 hundredths decrease. Still a few variables as we don't know if the DAs were the same between the stock run vs the CAI/tune run. The rest is hard to determine that the tune made the difference in the 60ft because the launch techniques kept changing.
Great runs!
Sent from my Autoguide iPhone app
I had over 25 passes on my car last year and the best times I was able to get on street tires was the 2200prm launch and bog technique which yielded my best times last year and this year. With the tune, again, using this launch method the the delay after the bog is decreased. The 13.008 pass was done trying to leave the line hard, which resulted in spinning tires both last year and this year and really doesnt work well for me. I would hope that I could use that method with success with a set of DR's.
Congrats on the improvement in your times, Vichammer. Seems like the tune was a worth-while addition.
To both you and Heminator, how many miles are on each of your cars?
__________________ 2012 Header Orange SRT8 Challenger. Auto with Paddles, 430N, BA stereo upgrades.
2009 TorRed SRT8 Challenger. 6-speed, Sunroof, Kicker, Nav. ***SOLD*** 1971 Lucerne Blue GTO. It was Limekist Green, with a 400 & M21 4-speed, but now packs a "built" 455HO & M22 "Rockcrusher".
12.7 is impressive for a 6m. It sounds to me like some is your improved technique (on my stock 392 6m I've done 13.01 and Crankcase did 12.9 with DRs in similar air -I feel like one more run would have had me in 12.99 territory), but clearly the tune is making a difference as that is a quality time for a 6m. Nicely done.
DRs and CAI with Hop Not and BG ECM are on my list...
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2011 392 IE #119 White with Blue Stripe 6spd
LS1Speed skip shift eliminator (from Speedlogix)
MOPAR Front Strut Tower Brace
Zoomers
Thanks Lee Brown!
IMHO... I think learning the best launching technique gives the most effective results. The more bolt ons/power u add the process starts over. DRs help vastly! You get waaaay better traction which = consistent 60'.
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