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Old 02-26-2009, 08:29 PM   #1 (permalink)
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1/4 mile video of breathless turbo car with about 4.5 psi

We decided to do a 1/4 mile test using our G-tech which runs about 3 tenths slower. In Florida, Fort Lauderdale temp about 78 humidity high slight rain and launch without loading the turbo. 1/4 mile was in 18.3 at almost 79 mph. This time on the track would lead to an easy 17 sec run. Compaired to our car stock was about 20.9

Actually the same car stock did 0-80 in the 24 sec range and we are there in almost 17 sec 7 secs quicker then before.


Our 0-60 was also faster then our stock car at 14.5 vs now 11.7

Next test we will try to load up on the turbo and pick a better day for conditions.

This was also done on our car with much heavier 17" rims, on stock wheels it would also be even faster.



Ernie
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Old 02-26-2009, 08:34 PM   #2 (permalink)
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One more


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Old 02-26-2009, 08:43 PM   #3 (permalink)
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...thanks so much for the update, time and effort you have put in this and other projects....
..what other mods are on the test bed car?
..is it me or the car kind of went to sleep when shifting to 3rd gear, as the sound of the engine is heard in the first video just did not rev up fast enough....thanks again

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Old 02-26-2009, 08:46 PM   #4 (permalink)
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yes it is a little slow going to 3rd gear, Its been that way since stock, remember this is an 08 model and are waiting for the March trans update.

No other engine mods, just our turbo.

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Old 02-26-2009, 08:48 PM   #5 (permalink)
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March trans update I already have the update for about 2 weeks now

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Old 02-26-2009, 08:49 PM   #6 (permalink)
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...appreciated...

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Old 02-26-2009, 08:49 PM   #7 (permalink)
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You notice anything yet. My dealer in Weston told us March

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Old 02-26-2009, 09:12 PM   #8 (permalink)
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We will try to take more outside video on Monday. Saturday we are heading to Homestead International Speedway to have some fun with our track Z06 race car.

Anyone one on the forum that would like to come see some road racing action give me a call.

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Old 02-26-2009, 09:32 PM   #9 (permalink)
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Ernie its a big difference shifting is smooth and quicker and not jerk. Our software was down today we had to call tech support, hopefully we will be back up and running tomorrow for the software update.

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Old 02-27-2009, 03:21 AM   #10 (permalink)
 
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i've tested both the turbo and the na with a gtech pro calibrated to take in to account the pitch the fortwo has, the non turbo did a 19.1 stock and the turbo did a 17.1 these were the best times i got on both vehicles both 100% stock

the turbo with a remap, basically factory boost level but comes on a bit earlier peaks earlier and 1-1.5psi higher at max load when spooled, so far best time of 16.3, with the gtech pro you can upload the runs to your computer and view the graphs then you can see why the smart car isnt that quick on paper, the g curve shows that as an average it takes approx 1.1seconds from power off to power back on, compared to a run i did in a clapped out manual where that time was 0.3 seconds... so theoretically there is a huge gain to be had with a manual not to mention the more aggressive axle snapping clutch smoking launch you could do LOL... my turbo needs to be in 4th to cross the line on the 1/4 mile (otherwise it's just going to shift for you anyway) now thats 3 gear changes @ 0.8sec each time lost vs conventional manual... nahhh it couldnt be that quick... or could it! i've seen 0-50kmh consistently in 2.3sec thats faster than most cars on the road.... go smart!

congrats on getting the turbo to work! and actually run on the smart and have some real world gains.... the best bit, better than the acceleration you gain, is the fact it would now have much more torque and in daily driving makes the smart drive like a normal car with what seems a much larger engine than what it has, no more flooring it or downshifting, press the gas turbo spools up and the torque will accelerate you harder in 3rd up a slow hill than a na model will go in 2nd!

and as you mention the 17 will kill the times, wack on the 15's with skinny tyres and watch the time drop, i had an awd auto with 20's on it and 230hp at all 4 wheels and it was 3 tenths faster at the strip on stock 16's and thats in a car that had 330hp at the crank and plenty of torque in the smart it'd be worth almost half a sec over the 1/4 i reckon.... also ive found just to nail it to be the best launch method, our programming is different to yours but you nail it revs go to 3500 and you gone... nothing else has worked as well, holding the revs and brake, like stalling an auto just smokes the clutch and feathering the trottle truing to rev it but not move dosent make any boost or difference, light go green tramp it, althou there is a tiny dealy in reaction so at the strip id take off just befor you see the last light, but then again i dont know hot the tree works over there, here when you see the last amber you nail it, thats for street car drags anyway.

Last edited by andrewd; 02-27-2009 at 03:30 AM..

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