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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Acceleration Runs Using GTech Pro 335xi with JSB2



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      08-24-2007, 10:11 PM   #1
catdog
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Post Acceleration Runs Using GTech Pro 335xi with JSB2

Got the Gtech Pro RR and did 4 runs, one of them was horrible (nearly burnt clutch due to cdv) and last one was best with oil temp 245-250. I now it's not a dragstrip but this was tonight with temp at 80F and humidity at 70%

Best Run (#4)
60ft = 1.999s
330ft = 5.557s
1/8 mil = 8.524s @ 85.36 mph
1000ft = 11.030s
1/4 mile = 13.158s @ 105.96 mph
0-60 = 4.645 s

Next best Run (#2)
60ft = 2.026s
330ft = 5.609s
1/8 mil = 8.616s @ 84.51 mph
1000ft = 11.150s
1/4 mile = 13.309s @ 104.63 mph
0-60 = 4.760 s

Next best Run (#1st run ever in car)
60ft = 2.138s
330ft = 5.952s
1/8 mil = 9.034s @ 82.49 mph
1000ft = 11.610s
1/4 mile = 13.766s @ 104.19 mph
0-60 = 5.397 s

Thanks and let the flaming begin (lol). BTW left 12 inches as rollout as standard with GtechPro, some say it's useless, others say it's dead accurate, discuss....
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Last edited by catdog; 08-25-2007 at 12:27 AM..
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      08-24-2007, 10:16 PM   #2
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by the way car has 6spd manual and will probably post 997s numbers over weekend for fun comparison...
also here are my numbers from my 2004 M3 SMG posted back then on dragtimes on a cooler day (same road btw):

1/4 Mile ET: 13.100
1/4 Mile MPH: 107.400
1/8 Mile ET: 8.520
1/8 Mile MPH: 84.400
0-60 Foot ET: 1.970
Temperature F: 65.0
0-60 4.65s (same!!!!!)
0-100 11.2s (within 0.03s!!!!)

Above were obtained on a G-timer by escort at that time. Funny they are nearly identical even though M3 had SMG and was at 400-450 lbs lighter! Torque will do that to ya...
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      08-24-2007, 11:43 PM   #3
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Here are my times, cool air, at sea level, my best M3 vs 335i run. Steptronic. I think the steptronic has a great launch. Even at the drag strip, I was launching as good as several all wheel drive Audis and Porsches. The red line on the graph is the M3 SMG as you can see by the distinct shift points. The black line the 335i. Someone with a 335xi steptronic has to post. You can launch with a little powerbrake (building torque) instead of frying the clutch and wasting energy.
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      08-24-2007, 11:59 PM   #4
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Ok just went out and did 3 runs in the 997S and am posting best two on the 997s with best 2 in the 335xi, i guess the graph says it all...nonetheless am very happy with the xi. Will try all this again with a cooler day and lower humidity, and hopefully after mastering the launch or getting rid of the cdv...

Best 997S run tonight

60ft = 1.853s
330ft = 5.320s
1/8 miles=8.199@88.15
1000ft = 10.641s
1/4 mile= 12.699@110.02
0-60=4.285 s
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      08-25-2007, 12:29 AM   #5
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hotrod182, thanks for posting, i love the smg shift points and i think the step would be easier to launch and to keep the boost up between shifts...
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      08-25-2007, 12:31 AM   #6
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I love my Gtech Pro RR.
You will notice the runs that are most consistant, are probably the most accurate ones. Every once in a while, if you get a run that seems way out of line, you discard it.. Always run at the exact same road, and same starting spot. Its amazing how the times will sometimes be within 100ths of a second of each other. Now if you could just get about 50 more horsepower, your Xi will run close to the 997S.
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      08-25-2007, 12:33 AM   #7
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Quote:
Originally Posted by hotrod182 View Post
I love my Gtech Pro RR.
You will notice the runs that are most consistant, are probably the most accurate ones. Every once is a while, if you get a run that seems way out of line, you discard it.. Always run at the exact same road, and same starting spot. Its amazing how the times will sometimes be within 100ths of a second of each other. Now if you could just get about 50 more horsepower, your Xi will run close to the 997S.
i guess that's where the v2 comes in hopefully...
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      08-25-2007, 09:09 AM   #8
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How does the 997S compare to the M5? I have thought about getting an M5 for its acceleration. But compared to my M3, it felt far less nimble, especially on narrow, winding roads. Also, down a low speeds, the M3 felt more responsive. In 1st gear, at 2000 RPM, if you punch the throttle, the M3 will snap you back, the M5 feels a little soft, and it seems it had most of its advantage at higher speeds, 75mph+, or when you are running it closer to redline. Not to mention it got pretty horrible gas mileage when I was driving it in the 100 miles I got to experience with it. Does the 997 feel more responsive down low too? , but less high end power than the M5?
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      08-25-2007, 10:34 AM   #9
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Quote:
Originally Posted by hotrod182 View Post
How does the 997S compare to the M5? I have thought about getting an M5 for its acceleration. But compared to my M3, it felt far less nimble, especially on narrow, winding roads. Also, down a low speeds, the M3 felt more responsive. In 1st gear, at 2000 RPM, if you punch the throttle, the M3 will snap you back, the M5 feels a little soft, and it seems it had most of its advantage at higher speeds, 75mph+, or when you are running it closer to redline. Not to mention it got pretty horrible gas mileage when I was driving it in the 100 miles I got to experience with it. Does the 997 feel more responsive down low too? , but less high end power than the M5?
hotrod, check www.rennteam.com and search, i describe my reasons to switch from M5. The 997S is like an m3 on steroids and on a diet, the lower weight and height makes it even sportier and on sport setting of suspension feels like a go-cart. Speed-wise it is a little faster than M3 obviously but on some of my earlier tests of the 997s when i still had the M3 i thought the M3 was more exciting at high rpm with great 8000 rpm redline. In some ways i felt the engine on the M3 was more exciting/race inspired than the 997S which has a lower redline, does not have as high pitch but has a whole lot more torque down low and the classic flat-6 sound. The 3.8L engine in the 997s is a relative torque monster, you can drive the car in town in 3rd gear most of the time. At top end, 997S is faster than M3 but you are trading practicality of M3 for exclusivity/sporty handling and p-car fun but i think in some ways the M3 engine is more akin in tuning to the GT3 engine whereas the 997S is more of a torquey less highly tuned variant.
Now to the M5, i got it when i thought i needed a bigger sedan for the kids etc. Immediately became obvious M5 did not handle as well as M3 at lower speeds than 80 mph because of weight but at higher speeds the M5 is surreal, it gets in its element above 100mph and in that are is better and more stable than 997s in some ways though perhaps less exciting. I loved the M5's engine/smg 7-spd combo which made you feel like you were in an F1, esp in a tunnel with windows down. On other hand what killed it as a daily driver is that i was getting 10.5 mpg and with the small 16-17 gallon tank was filling at the gas station every 3 days. Also a nice 997s became available and i was intrigued by taming the rwd beast so went with the RWD instead of 997C4S and it has been a blast.
Each one of these has been great but the e46 M3 holds a very special place in my heart and if i had to pick one of these cars, it would be a tie with the 997s...Probably the M3csl or 997GT3 would be just about the perfect car.
For 997s vs. M5, the 997S handles so much better and is so much more fun at all speeds lower than 100mph; if you need a sedan or if you have unlimited high speed hioghways then the M5 reigns; it is an absolute beast above 100-120mph but then again how often does one get there in US (never of course).

Last edited by catdog; 08-25-2007 at 10:51 AM..
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      08-25-2007, 10:41 AM   #10
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Yup, cars have such different characteristics that can appeal to a person. I have been driving my 335i for about 3wks straight now. Since I love to speed, I am actually in love with its stealth factor. There is nothing better than a 4 door sedan blowing off some sports car. But when I get back into my M3, I know I will appreciate it for what it is. It stands out in the parking lot, the 335i blends in. The M3 definitely has great 100mph+ steering stability. It is just so effortless in ultra high speed cruising. The 335i with its automatic is so deceptive in the way it builds speed crusing through city traffic, etc. It is so quiet and refined compared to the M3. With a simple $399 JB2 mod, I would imagine I would take on the stock 6.0 GTOs on roll ons also. You have to share any encounters you have with any of those 6.0L LS2s. Especially since your car is every bit as heavy as they are.
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      08-25-2007, 10:48 AM   #11
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hotrod, i got the 335xi to keep a stealth factor and not stand out, got annoying in the other cars every truck and minivan and civic wanted to race and cut you off. now incognito is much nicer...no flared fenders, no wings, no side vents, no nuthin....LOL
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      08-25-2007, 10:50 AM   #12
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Quote:
Originally Posted by catdog View Post
hotrod, i got the 335xi to keep a stealth factor and not stand out, got annoying in the other cars every truck and minivan and civic wanted to race and cut you off. now incognito is much nicer...no flared fenders, no wings, no side vents, no nuthin....LOL
And hopefully less tickets! I got pulled over the other day by a really cute Italian female police officer. She let me go luckily.
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      08-25-2007, 10:53 AM   #13
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Quote:
Originally Posted by hotrod182 View Post
And hopefully less tickets! I got pulled over the other day by a really cute Italian female police officer. She let me go luckily.
You lucky dog, i have always been $crewed (in terms of warning vs. ticket, not the other kinda screw) by female officers...
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      08-25-2007, 04:53 PM   #14
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how hard were you launching the 335xi? I would have expected better 60' times, those are similar to what people are getting with the rwd...
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      08-25-2007, 05:16 PM   #15
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i dont care if the thing runs 10s its not going in my car
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      08-25-2007, 08:10 PM   #16
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Quote:
Originally Posted by Lee Rambler View Post
how hard were you launching the 335xi? I would have expected better 60' times, those are similar to what people are getting with the rwd...
Please check today's post, I got the 60' down to ~1.874 and check http://www.e90post.com/forums/showthread.php?t=80108
However i really did not drop the clutch or anything like that; there is just too much traction so i go up to 3000 rpm and then ease the clutch as i give more gas then it launches nicely. I am sure there is more that can be explored in the xi's traction but it's very stressful on the car, basically the clutch or gearbox takes it and the tires don't really break traction that easily.
Last night's run were in the dark but this on from the other thread worked out nicely. i am sure it can be improved and when v2 becomes available the car should drop to the low 12's...scary thought but exciting nonetheless
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      08-26-2007, 02:20 AM   #17
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Quote:
Originally Posted by 533ogetnom View Post
i dont care if the thing runs 10s its not going in my car
Hey we get it, how about you just stop and don't put it in your car. Easy enough.
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      08-26-2007, 02:35 AM   #18
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^ well, you can take it like that:

If stage 1 is $179 and we all know very well of what it consists I could imagine what stage 2 consists of. I am not willing to put some engine performance parts on my car, worth less than $20, "developed" by a software engineer with a questionable reputation based on a concept which has been a joke of Shiv. I wonder why some do.

How about that ?

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Eugen
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      08-26-2007, 03:07 AM   #19
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The price of the components is always a minor part of the price, especially if the price is more than $1000. You pay hundreds more on top of the price of the parts if you buy another EMS tuning product. But who cares. What is relevant is the safety. JB dynos show safety.
Why is there people who try to get every thread to be totally OT.... just reading back and wondering how we ended in this dicussion....

Last edited by bnj; 08-26-2007 at 03:30 AM..
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      08-26-2007, 03:22 AM   #20
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Got it. Put on your engines whatever you want. It's my personality to try to give and to get the best.
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      08-26-2007, 03:28 AM   #21
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Eugen, that is a quality I appreciate in you a lot...being a perfectionist myself as well.
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      08-26-2007, 03:30 AM   #22
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Quote:
Originally Posted by e.n335 View Post
^ well, you can take it like that:

If stage 1 is $179 and we all know very well of what it consists I could imagine what stage 2 consists of. I am not willing to put some engine performance parts on my car, worth less than $20, "developed" by a software engineer with a questionable reputation based on a concept which has been a joke of Shiv. I wonder why some do.

How about that ?

Cheers
Eugen
JuiceBox Stage 1 is based on the same "joke"[sic] concept as the Split Second Turbo Tuner (SSTT), and it consists of parts similar in operation. According to posts Terry made here (before they were deleted), it was also tuned more conservatively than the Turbo Tuner. It was a bargain at the $99 intro price, but I still paid 5x the price and went with the SSTT due to its ease of install/removal.

I have had no problems with the SSTT, and I've not heard of anyone having any issues with it in terms of reliability, durability, driveability, or any error codes. Neither have I heard of people having any issues with JBS1 nor JBS2.

You don't have to be a genius to figure out why some people buy JBS1/JBS2/SSTT over the Procede. So, don't be wondering too long .

Sam
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